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| INTEGRATED CIRCUITS DATA SHEET TDA5341 Brushless DC motor and VCM drive circuit with speed control Product specification File under Integrated Circuits, IC11 1997 Jul 10 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control FEATURES * Full-wave commutation (using push-pull output stages) without position sensors * Built-in start-up circuitry * Three push-pull MOS outputs: - 1 A output current - Low voltage drop - Built-in current limiter * Thermal protection * General purpose operational amplifier * Reset generator * Motor brake facility * Actuator driver (H-bridge current-controlled) * Power-down detector * Automatic park and brake procedure * Adjustable park voltage * Sleep mode * Speed control with Frequency-Locked Loop (FLL) * Serial port * Friction reduction prior to spin-up. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL VDD IoMOT RDS(MOT) IoACT RDS(ACT) PARAMETER general supply voltage for logic and power motor output current motor output resistance actuator output current actuator output resistance MIN. 4.5 1.3 - 0.7 - TYP. 5.0 1.6 1.1 1.1 2.0 MAX. 5.25 1.9 1.56 1.4 2.5 V A APPLICATIONS * Hard Disk Drive (HDD). GENERAL DESCRIPTION TDA5341 The TDA5341 is a BiCMOS integrated circuit used to drive brushless DC motors in full-wave mode. The device senses the rotor position using an EMF sensing technique and is ideally suited as a drive circuit for a hard disk drive motor. The TDA5341 also includes a Voice Coil Motor driver (VCM), reset and park facilities and an accurate speed regulator. In addition, a serial port facilitates the control of the device. UNIT A ORDERING INFORMATION TYPE NUMBER TDA5341G PACKAGE NAME LQFP64 DESCRIPTION plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm VERSION SOT314-2 1997 Jul 10 2 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control BLOCK DIAGRAM TDA5341 handbook, full pagewidth CAPXA 61 CAPXB 59 CAPYA 62 CAPYB 63 CNTRL 24 CAPCPC 22 ILIM 23 CURRENT LIMIT CONTROL 20 PRESET MOT1 CAPCP FREDENA TESTIN 27 9 12 UPPER VOLTAGE CONVERTER CONTROL AMPLIFIER THERMAL SWITCH ADAPTIVE COMMUTATION DELAY TIMING OSCILLATOR START OSCILLATOR BRAKE CONTROLLER POWER 1 60 CAPCDM CAPCDS CAPTI 18 19 POWER 2 8 MOT2 POWER 3 2 COMMUTATION AND OUTPUT DRIVING LOGIC 21 MOT3 CAPST 1 COMPARATORS 7 MOT0 BRAKE FG FMOT 11 10 58 BAND GAP 2 3 26 43 CLAMP1 CLAMP2 RESETOUT UVDIN1 UVDIN2 BRAKEDELAY AMPOUT AMPIN- AMPIN+ FILTER SENSEOUT SENSEIN+ SENSEIN- VCM+ VCM- FB1 FB2 POLES DIVIDER brake UNDER-VOLTAGE DETECTOR 44 54 46 CLOCK DATA ENABLE RESET 39 38 42 57 SERIAL PORT sleep fill DIGITAL FREQUENCY COMPARATOR CHARGE PUMP BAND GAP 1 BRAKE AFTER PARK 4 5 6 32 53 52 SENSE AMPLIFIER 51 37 VCM H-BRIDGE 45 28 29 ROSC 48 PROGRAMMING FREQUENCY DIVIDER DPULSE RETRACT VCMIN1 VCMIN2 Vref GAINSEL 35 park 30 33 34 36 15 50 VEED 14 VEE1 55 VEE2 31 VEE3 49 VEE4 17 VEE VCM PREAMPLIFIER TDA5341 25 VDD1 64 VDD2 40 VDD3 16 VDD 41 VDDD MGE817 Fig.1 Block diagram. 1997 Jul 10 3 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control PINNING SYMBOL CAPST CAPTI CLAMP1 AMPOUT AMPIN- AMPIN+ MOT0 MOT2 FREDENA FG BRAKE TESTIN TP1 VEE1 GAINSEL VDD VEE CAPCDM CAPCDS PRESET MOT3 CAPCPC ILIM CNTRL VDD1 CLAMP2 CAPCP FB1 FB2 RETRACT VEE3 FILTER VCMIN1 VCMIN2 DPULSE Vref VCM+ DATA CLOCK VDD3 1997 Jul 10 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 external capacitor for timer circuit DESCRIPTION external capacitor for starting oscillator TDA5341 external capacitor used to park the heads; must be externally connected to CLAMP2 uncommitted operational amplifier output uncommitted operational amplifier invert input uncommitted operational amplifier direct input motor centre tap input motor driver output 2 friction reduction mode enable input (active HIGH) frequency generator (tacho) output brake input command (active LOW) test input for power output switch-off (active HIGH) test purpose 1 (should be left open-circuit) ground for the spindle motor drivers VCM gain adjustment input (switch ON when GAINSEL is LOW) general power supply general ground external capacitor for adaptive commutation delay (master) external capacitor for adaptive commutation delay (slave) set the motor drivers into a fixed state: MOT1 = F (floating), MOT2 = L, MOT3 = H motor driver output 3 frequency compensation of the current control current limit control input motor control power supply 1 for the spindle motor drivers external capacitor used to park the heads; must be externally connected to CLAMP1 external capacitor for the charge pump output output of the VCM preamplifiers switchable output of the VCM preamplifier park input command (active LOW) ground 3 for the actuator driver charge pump output to be connected to an external filter VCM voltage control input switchable VCM voltage control input data pulse input of the frequency comparator of the speed control voltage reference input positive output of the VCM amplifier input data of the serial port (active HIGH) clock input signal to shift DATA into SERIALIN register (active HIGH) power supply 3 for the actuator driver 4 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL VDDD ENABLE RESETOUT UVDIN1 VCM- BRAKEDELAY TP2 ROSC VEE4 VEED SENSEIN- SENSEN+ SENSEOUT UVDIN2 VEE2 TP3 RESET FMOT CAPXB MOT1 CAPXA CAPYA CAPYB VDD2 PIN 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 digital power supply DESCRIPTION TDA5341 enable input; enables the serial port, i.e. allows DATA to be shifted in (active LOW) under-voltage detector output flag (active LOW) external capacitor for the RESETOUT duration negative output of the VCM amplifier delay control input for brake after park test purpose 2 (should be left open-circuit) reference oscillator input for motor speed control ground 4 for the actuator driver digital ground inverting input of the VCM sense amplifier non-inverting input of the VCM sense amplifier output of the VCM sense amplifier external voltage reference for the under-voltage detector ground 2 for the spindle motor drivers test purpose 3 (should be left open-circuit) reset input; forces all bits of the SERIALIN register to 0 (active HIGH) tachometer output (one pulse per mechanical revolution) external capacitor for the charge pump output motor driver output 1 external capacitor for the charge pump output external capacitor for the charge pump output external capacitor for the charge pump output power supply for the spindle motor drivers 1997 Jul 10 5 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control TDA5341 52 SENSEIN+ 54 UVDIN2 63 CAPYB 62 CAPYA 61 CAPXA 59 CAPXB 57 RESET 58 FMOT 60 MOT1 51 SENSEIN- handbook, full pagewidth 53 SENSEOUT 50 VEED 64 VDD2 CAPST CAPTI CLAMP1 AMPOUT AMPIN- AMPIN+ MOT0 MOT2 FREDENA FG BRAKE TESTIN TP1 VEE1 GAINSEL VDD 1 2 3 4 5 6 7 8 49 VEE4 48 ROSC 47 TP2 46 BRAKEDELAY 45 VCM- 44 UVDIN1 43 RESETOUT 42 ENABLE 41 VDDD 40 VDD3 39 CLOCK 38 DATA 37 VCM+ 36 Vref 35 DPULSE 34 VCMIN2 33 VCMIN1 FILTER 32 TDA5341 9 10 11 12 13 14 15 16 20 21 22 23 24 25 26 27 28 29 RETRACT 30 VEE 17 CAPCDM 18 CAPCDS 19 31 VEE3 PRESET CNTRL ILIM MOT3 VDD1 CAPCPC CLAMP2 55 VEE2 56 TP3 CAPCP FB1 FB2 MGE816 Fig.2 Pinning diagram. 1997 Jul 10 6 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control FUNCTIONAL DESCRIPTION The TDA5341 offers a sensorless three-phase motor full-wave drive function. The device also offers protected outputs capable of handling high currents and can be used with star or delta connected motors. The TDA5341 can easily be adapted for different motors and applications. The TDA5341 offers the following features: * Sensorless commutation by using the motor EMF * Built-in start-up circuit * Optimum commutation, independent of motor type or motor loading * Built-in flyback diodes * Three-phase full-wave drive * High output current (1.3 A) * Low MOS RDSon (1 ) * Outputs protected by current limitation and thermal protection of each output transistor * Low current consumption * Additional uncommitted operational amplifier * H-bridge actuator driver current controlled with an external series sense resistor * Automatic retract procedure * Adjustable park voltage * Sleep mode * Automatic brake (after park) procedure Table 1 Summary of controlled modes MODE spindle disable VCM disable brake retract friction reduction MOT1, 2 AND 3 high impedance not affected LOW not affected - VCM+ AND VCM- high impedance high impedance not affected VCM- = 0.65 V; VCM+ = 0 V not affected RESETOUT HIGH HIGH HIGH HIGH HIGH * Serial port DATAIN (24 bits) * Friction reduction prior to spin-up. TDA5341 modes description TDA5341 * Speed control based on FLL technique The TDA5341 can be used in two main modes, depending on whether they are controlled or not. The `controlled modes' (user commands) are executed by the TDA5341 without delay or priority treatment, either by software via the serial port or by hardware. BRAKE is a hardware command whereas RETRACT can be controlled in both ways. If it is preferable to control the heads parking via the serial bus, the equivalent pin can be left open-circuit. The sleep mode is controlled by software only; it results from the combination of the spindle and actuator being disabled. The spindle is turned off by bit SPINDLE DISABLE, whereas the actuator is disabled towards bit VCM DISABLE of the serial port (see Section "Serial port"). In addition, a special spin-up mode can be activated in the event of high head stiction The `uncontrolled modes' only result from different failures caused by either a too high internal temperature or an abnormally low power voltage, which will cause the actuator to retract and, after the spindle, to brake. The output signals mainly affected by those failures are RESETOUT, MOT1, 2 and 3, VCM+ and VCM-. This is summarised in Tables 1 and 2. HARDWARE/ SOFTWARE Software Software Hardware Software/ hardware Hardware EFFECT spindle off spindle on; VCM off spindle coils ground heads parked heads in vibration 1997 Jul 10 7 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control Table 2 Summary of uncontrolled modes MOT1, 2 AND 3 high impedance LOW high impedance LOW VCM+ AND VCM- VCM- = 0.65 V; VCM+ = 0 V VCM- = 0.65 V; VCM+ = 0 V RESETOUT LOW LOW TDA5341 FAILURE Thermal shut-down Voltage shut-down Controlled modes SPINDLE DISABLE EFFECT automatic park and brake automatic park and brake FRICTION REDUCTION Pulling FREDENA HIGH activates the friction reduction mode of the TDA5341. In that mode, a clock signal fed via pin TESTIN will cause the MOT outputs to sequentially switch-on and switch-off at the same frequency and, as a result, generate an AC spindle torque high enough to overcome the head stiction. Before start-up, the head stiction might be higher than normal due to condensation between the head(s) and the disk(s). Normal spin-up is not possible when this friction torque is higher than the start-up torque of the spindle motor. Spin-up is then only possible after friction has been reduced by breaking the head(s) free. Bringing a static friction system into mechanical resonance is an effective method to break static friction head(s) free. The resonance frequency is: 1 C f res = ------ x 0.5 --- 2 J Where: C = Stiffness of the head-spring(s) in direction of disk(s) rotation, (N/m) J = Inertia of the disk(s), (kg/m2). The external clock input frequency must be: 6 C f clk = ------ x 0.5 --- 2 J A burst of n x 6 clock pulse will bring the system into resonance and break the heads free (n > 2). Once the heads have been broken free, the normal spin-up procedure can be applied. It should be noted that the clock frequency must be smaller than 40000/CAPCDM (nF). The spindle circuitry is switched off when bit 23 (SPINDLE DISABLE) of the serial port is pulled HIGH. In that mode, the reference band gap generator is cut off so that all internal current sources are disabled. Both the spindle and actuator outputs will be set to the high impedance state because the upper converter is also turned off. It should be noted that the uncommitted operational amplifier is also disabled in that mode. VCM DISABLE The actuator will be disabled when bit 22 (VCM DISABLE) is set to logic 1; the spindle circuitry is not affected in that mode. The retract circuitry also remains active, so that the heads can be parked although the VCM is disabled. In that mode, the current consumption can be reduced by 4 mA. SLEEP MODE The sleep mode is obtained by pulling both the SPINDLE and VCM DISABLE bits of the serial port HIGH. The power monitor circuitry only remains active in sleep mode. RETRACT Retract is activated by pulling either bit 21 (PARK) HIGH or RETRACT (pin 30) LOW. When RETRACT is set LOW, a voltage of 0.65 V is applied to pin VCM- for parking. It should be noted that the park voltage can be made adjustable by changing one of the interconnect masks. Accordingly, some different voltages, varying from 0.2 to 1.2 V, can quickly be obtained on customer demand. This mode does not affect the control of the spindle rotation. BRAKE MODE The brake mode is activated by pulling BRAKE (pin 11) LOW. When a voltage of less than 0.8 V is applied to pin BRAKE, the 3 motor outputs are short-circuited to ground, which results in a quick reduction of the speed until the motor stops completely. 1997 Jul 10 8 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control Uncontrolled modes POWER SHUT-DOWN If the power supply decreases to less than the voltage threshold determined by the ratio between R1 and R2 connected to UVDIN2 (see Fig.8) (for more than 1 s), the TDA5341 will issue a reset (RESETOUT goes LOW) and the following operation will start: * Firstly, the MOT outputs are switched to the high impedance state so as to get back the rectified EMF issued from the motor itself. At the same time, the voltage upper converter is cut off in order to preserve the voltage on the charge pump capacitance at CAPCP. The energy supplied in that way is then used to park the heads in a safe position * Secondly, after a certain period of time, depending on the RC constant of the device connected to BRAKEDELAY, the lower MOS drivers will be turned on in order to stop the motor completely. THERMAL SHUT-DOWN Should the temperature of the chip exceed +140 10 C, a shut-down operation will also be processed. The actions described for power shut-down will be sequenced in the same manner. SPINDLE SECTION (see Fig.1) Full-wave driving of a three-phase motor requires three push-pull output stages. In each of the six possible states two outputs are active, one sourcing current and one sinking current. The third output presents a high impedance to the motor which enables measurement of the motor EMF in the corresponding motor coil by the EMF comparator at each output. The commutation logic is responsible for control of the output transistors and selection of the correct EMF comparator. The zero-crossing in the motor EMF (detected by the comparator selected by the commutation logic) is used to calculate the correct moment for the next commutation, i.e. the change to the next output state. The delay is calculated (depending on the motor loading) by the adaptive commutation delay block. Because of high inductive loading the output stages contain flyback diodes. The output stages are also protected by a current limiting circuit and by thermal protection of the six output transistors. The zero-crossings can be used to provide speed information such as the tacho signal (FG). TDA5341 The system will only function when the EMF voltage from the motor is present. Consequently, a start oscillator is provided that will generate commutation pulses when no zero-crossings in the motor voltage are available. A timing function is incorporated into the device for internal timing and for timing of the reverse rotation detection. The TDA5341 also contains a control amplifier, directly driving output amplifiers. The TDA5341 also provides access to the user of some of its internal test modes. Firstly, a PRESET mode can be used for prepositioning the three motor output drivers into a fixed state. By pulling pin PRESET to 0.75 V above VDD, MOT3 goes HIGH, MOT2 goes LOW and MOT1 goes to the high impedance state. In addition, when TESTIN is pulled HIGH (provided that FREDENA is LOW), the 3 motor output drivers are switched off. It should be noted that RESETOUT goes LOW in that particular event. Adjustments The system has been designed in such a way that the tolerances of the application components are not critical. However, the approximate values of the following components must still be determined: * The start capacitor; this determines the frequency of the start oscillator * The two capacitors in the adaptive commutation delay circuit; these are important in determining the optimum moment for commutation, depending on the type and loading of the motor * The timing capacitor; this provides the system with its timing signals. The start capacitor (CAPST) This capacitor determines the frequency of the start oscillator. It is charged and discharged, with a current of 5.5 A, from 0.05 to 2.2 V and back to 0.05 V. The time taken to complete one cycle is given by: tstart = (0.78 x C); where C is given in F. The start oscillator is reset by a commutation pulse and so is only active when the system is in the start-up mode. A pulse from the start oscillator will cause the outputs to change to the next state (torque in the motor). If the movement of the motor generates enough EMF the TDA5341 will run the motor. 1997 Jul 10 9 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control If the amount of EMF generated is insufficient, then the motor will move one step only and will oscillate in its new position. The amplitude of the oscillation must decrease sufficiently before the arrival of the next start pulse, to prevent the pulse arriving during the wrong phase of the oscillation. The oscillation of the motor is given by: f osc P2 0.5 = ------- x K t x I x --- - J 1 -- TDA5341 During the next commutation period this capacitor (CAPCDM) is discharged at twice the charging current. The charging current is 10 A and the discharging current 20 A; the voltage range is from 0.87 to 2.28 V. The voltage must stay within this range at the lowest commutation frequency of interest, fC1: 10 x 10 7092 C = ------------------------ = -----------f x 1.41 f C1 Where C is in nF. If the frequency is lower, then a constant commutation delay after the zero-crossing is generated by the discharge from 2.28 to 0.87 V at 20 A. Maximum delay = (0.070 x C) ms: Where C is in nF. Example: nominal commutation frequency is 3240 Hz and the lowest usable frequency is 1600 Hz, thus CAPCDM = 7092/1600 = 4.43 (choose 4.7 nF) The other capacitor, CAPCDS, is used to repeat the same delay by charging and discharging with 20 A. The same value can be chosen as for CAPCDM. Figure 3 illustrates typical voltage waveforms. -6 Where: Kt = torque constant (N.m/A) I = current (A) p = number of magnetic pole-pairs J = inertia J (kg/m2). Example: J = 6.34 x 10-7 kg/m2, K = 4.5 x 10-3 N.m/A, p = 6 and I = 0.48 A; thus fosc = 22.7 Hz. Without damping, a start frequency of 48.4 Hz can be chosen or t = 24 ms, thus C = 0.024/0.78 = 0.031 F, (choose 33 nF). The Adaptive Commutation Delay (CAPCDM and CAPCDS) In this circuit capacitor CAPCDM is charged during one commutation period, with an interruption of the charging current during the diode pulse. handbook, full pagewidth voltage on CAPCDM voltage on CAPCDS MGE820 Fig.3 CAPCDM and CAPCDS voltage waveforms in normal running mode. 1997 Jul 10 10 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control The Timing Capacitor (CAPTI) Capacitor CAPTI is used for timing the successive steps within one commutation period; these steps include some internal delays. The most important function is the watchdog time in which the motor EMF has to recover from a negative diode pulse back to a positive EMF voltage (or vice-versa). A watchdog timer is a guarding function that only becomes active when the expected event does not occur within a predetermined time. The EMF usually recovers within a short time if the motor is running normally (< TDA5341 The capacitor is charged, with a current of 60 A, from 0.03 to 0.3 V. Above this level it is charged, with a current of 5 A, up to 2.2 V only if the selected motor EMF remains in the wrong polarity (watchdog function). At the end, or, if the motor voltage becomes positive, the capacitor is discharged with a current of 30 A. The watchdog time is the time taken to charge the capacitor, with a current of 5 A, from 0.3 to 2.2 V. The value of CAPTI is given by: tm -6 C = 5 x 10 x ------- = 2.63t m 1.9 Where: C is in nF and t is in ms. Example: If, after switching off, the voltage from a motor winding is reduced, in 3.5 ms, to within 10 mV (the offset of the EMF comparator), then the value of the required timing capacitor is given by: C = 2.63 x 3.5 = 9.2 (choose 10 nF) Typical voltage waveforms are illustrated by Fig.4. handbook, full pagewidth VMOT1 voltage on CAPTI MGE821 If the chosen value of CAPTI is too small, then oscillations can occur in certain positions of a blocked rotor. If the chosen value is too large, then it is possible that the motor may run in the reverse direction (synchronously with little torque). Fig.4 Typical CAPTI and VMOT1 voltage waveforms in normal running mode. 1997 Jul 10 11 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control Other design aspects There are other design aspects concerning the application of the TDA5341 besides the commutation function. They are as follows: * Generation of the tacho signal FG * Motor control * Current limiting * Thermal protection. TDA5341 Current limiting Outputs MOT1 to MOT3 are protected against high currents in two ways; current limiting of the `lower' output transistor and current limiting of the `upper' one. This means that the current from and to the output stages is limited. It is possible to adjust the limiting current externally by using an external resistor connected between pin ILIM and ground, the value is determined by the formula: 2.54 I ILIM = 10020 x ---------R Where R = R (min.) = 19.5 k and IILIM = 1.3 A. If R < 19.5 k, then IILIM is internally limited for device protection purposes. FG signal The FG signal is generated in the TDA5341 by using the zero-crossing of the motor EMF from the three motor windings and the commutation signal. Output FG switches from HIGH-to-LOW on all zero-crossings and LOW-to-HIGH on all commutations and can source more than 40 A and sink more than 1.6 mA. Example: A three-phase motor with 6 magnetic pole-pairs at 1500 rpm and with a full-wave drive has a commutation frequency of 25 x 6 x 6 = 900 Hz and generates a tacho signal of 900 Hz. Thermal protection Thermal protection of the six output transistors of the spindle section is achieved by each transistor having a thermal sensor that is active when the transistor is switched on. The transistors are switched off when the local temperature becomes too high. In that event, a RESET is automatically generated to the external world by pulling RESETOUT LOW. Reset section This circuit provides the following: * An external signal that sends a RESETOUT (active LOW) to the disk drive circuitry at power-up and power-down * Causes actuator to retract (PARK). The power-up reset signal (RESETOUT) applied to external circuits as a digital output is typically 150 ms after power-up. In the same way, as soon as VDD goes below a threshold that is externally set (UVDIN2), RESETOUT goes LOW. The under voltage detection threshold is adjustable with external resistors (see Fig.8). The reset circuitry has a minimum output pulse (100 ms) even for brief power interruptions (higher than 1 ms). The pulse duration can be adjusted with an external capacitor (UVDIN1). Motor control Figure 5 shows the spindle transconductance by giving the relative output current as a function of the voltage applied to pin CNTRL. handbook, halfpage MGE822 Io 100 (% of Imax) 80 60 40 20 0 0 1 2 5 3 4 control voltage (V) Fig.5 Output current control. 1997 Jul 10 12 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control The power for retraction is received from the rectification of the EMF of the spindle before it is spun down. After retraction, a brake procedure is automatically settled. The time needed for retraction, prior to braking, can be precisely adjusted with the external RC device connected to pin BRAKEDELAY. The discharge of the capacitance across the resistance from VDD - 0.7 V down to 1 V will provide the desired time constant. Actuator section The actuator driver has a control input voltage that is proportional to the actuator current which is capable of a closed-loop band-pass frequency higher than 10 kHz. TRANSFER FUNCTION TDA5341 An operational amplifier input allows passive external components for compensation and gain setting. The compensation amplifier is able to be pulled out of a saturation state within 5 s and its output swing is VDD - 1.5 V. An actuator current-sense amplifier is provided for use by the disc drive controller. The gain from current-sense resistor to sense the amplifier output is typically 10 (3%) and the output voltage swing is 1.25 V. An input common mode range insures operation through all normal coil voltage excursions. Maximum recovery time from saturation is 20 s (typ.). handbook, full pagewidth CL1 CL2 RIN1 input RIN2 VCMIN2 FB2 FB1 actuator Rs VCM- VCM+ SENSEIN- SENSEIN+ GAINSEL Rf VCMIN1 PREAMP Vref OUTPUT GAIN 11 SENSEOUT SENSE AMP TDA5341 MGE825 Fig.6 VCM section application diagram. 1 T = - 11 x R f x Z L x -------------------------------------------------------------------------------------------------------------------- R IN x ( R f x R s + R f x Z VCM + 110 x R s x Z L ) With GAINSEL = HIGH; RIN = RIN1 R IN1 x R IN2 With GAINSEL = LOW; R IN = -----------------------------R IN1 + R IN2 1997 Jul 10 13 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control Speed control function Speed control is efficiently achieved by the frequency-locked loop circuitry which is enabled by bit D20 of the CONTROL register. Its aim is to keep the tachometer signal set to a reference programmed by the user via the serial port (see Section "Serial port"). The FLL operates as follows: When power is first applied to the circuit, the FILTER pin is pulled HIGH so that maximum output current can be sourced for optimum torque. FG pulses will appear rapidly so as to provide a `clean' clock signal (FMOT) that will issue one pulse per mechanical revolution. This may be used for speed regulation, by re-entering the signal through the DPULSE pin. Then, after it has been synchronised to the ROSC clock, it is compared to an accurate reference derived from the ROSC clock and programmed by the user via the serial port. The resulting variation in frequency generates a speed error term that will switch a charge-pump up or down in order to charge or discharge an external RC filter (FILTER). The voltage at the FILTER pin is then used as an input to the current control amplifier that regulates the current in both upper and lower NMOS transistors. A velocity regulation based upon (maximum) one corrective action per mechanical revolution may be considered insufficient in some applications. That is the reason why the second input of the FLL circuitry was intentionally left open-circuit and directly accessible to the external world via pin DPULSE. In that way, total freedom is given to the user to use any signal coming out of the microcontroller in order to regulate the motor velocity with a finer accuracy. Moreover, a mixed regulation is also possible: firstly, the FMOT signal is fed via DPULSE into the FLL circuitry and then once data is read out off the disc, it is switched to another clock signal with a higher frequency than FMOT. Simultaneously, a new division factor is programmed via the serial port. It should be noted that there is no need for external synchronization. However, it is recommended to change the division factor and the DPULSE clock rate during the period when FMOT is HIGH. Serial port The serial port operates as follows: TDA5341 When ENABLE is HIGH, the serial port is disabled, which means the TDA5341 functions regardless of any change at pins DATA and CLOCK. When ENABLE is set LOW some set-up time before the falling edge of CLOCK, the serial port is enabled, i. e. data is serially shifted into the 24-bit shift register on the falling edge of the CLOCK signal. The least significant bit (LSB = DATA 0) is the first in, DATA(23) the MSB is the last in. When ENABLE goes HIGH, the contents of the shift register are loaded into the internal fixed register (CONTROL register), it will not change until the next rising edge of ENABLE. It should be noted that when RESET goes HIGH it will force all bits of the shift register and the control register to logic 0. However, there is no reset effect on both power-up and power-down i.e there is no correlation between RESET and RESETOUT. CLOCK can be stopped (either in the HIGH or LOW state) once RESET or ENABLE have been asserted. The 24-bit control register is organized as follows: * D23: SPINDLE DISABLE - When LOW, the spindle circuitry is enabled * D22: VCM DISABLE - When LOW, the actuator circuitry is enabled * D21: PARK - When HIGH, it enables the head retraction. This has the same effect as pin RETRACT pulled LOW * D20: FLL ENABLE - When HIGH, it closes the complete speed regulation loop - When LOW, it will set the output of the charge pump (FILTER) to the high impedance state * D19 and D18 - The combination of these bits fixes the division factor to apply on the FG signal with respect to the number of poles. 1997 Jul 10 14 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control Table 3 Division factor D18 0 1 0 1 POLE PAIRS 4 6 8 12 TDA5341 D19 0 0 1 1 * D17 to D0 Example: for a motor speed of 3600 rpm and a reference oscillation ROSC of 16 MHz, the division factor that has to be programmed via the bus, will be: 16 x 10 DIV = 7.5 x ------------------------ = 33333 3600 The resulting error will be less than 0.04 rpm. -6 These bits program the division factor to apply to the ROSC signal so as to generate a reference that will precisely control the spindle rotation; - The division factor can range from 8 (DIV = 1) to 8 x [218 - 1] = 2097144 (DIV = 3FFFF) - The relationship between this division factor, ROSC and the motor frequency is as follows: DIVISION FACTOR = 7.5 x ROSC/MOTOR speed where the MOTOR speed is given in rpm and ROSC in Hz. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VDD Vi V60,8,21 V45,37,53 V1,2,18,19 Tstg Tamb Ptot HANDLING Every pin withstands the ESD test in accordance with MIL-STD-883C. Method 3015 (HBM 1900 , 100 pF) 3 pulses positive and 3 pulses negative on each pin with reference to ground. Class 1 : 0 to 1999 V. THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient in free air VALUE 54 UNIT K/W positive supply voltage input voltage (all pins) output voltage pins MOT1, MOT2 and MOT3 output voltage pins VCM-, VCM+ and SENSEOUT input voltage pins CAPST, CAPTI, CAPCDM and CAPCDS IC storage temperature operating ambient temperature total power dissipation PARAMETER - -0.3 -0.25 0.7 - -55 0 MIN. MAX. 5.5 +5.5 2.5 +150 +70 see Fig.7 V V V C C VDD + 0.3 V VDD + 0.7 V UNIT 1997 Jul 10 15 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control TDA5341 handbook, halfpage 3 MGE823 Ptot (W) 2 (1) (2) 1 SAFE OPERATING AREA 0 0 50 100 Tamb (C) 150 (1) Tj(max) = 130 C. (2) Tj(max) = 150 C. Fig.7 Power derating curve. CHARACTERISTICS (SPINDLE FUNCTION) VDD = 5 V; VDD1 and VDD2 > VDD is not allowed; Tamb = 25 C; unless otherwise specified. SYMBOL Supply VDD VDD1 VDD2 VDD3 IDD Iq(sm) TSD T Vso general supply voltage supply voltage 1 for the spindle motor drivers supply voltage 2 for the spindle motor drivers supply voltage for the actuator driver general supply current quiescent current in sleep mode 4.5 4.5 4.5 4.5 - - 5.0 5.0 5.0 5.0 11 1.4 5.25 5.25 5.25 5.25 15 2 V V V V mA mA C C V PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Thermal protection local temperature at temperature sensor causing shut-down reduction in temperature before switch-on test pin switch-off voltage after shut-down 130 - 2.5 140 TSD - 30 - 150 - - 1997 Jul 10 16 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL MOT0 Vi Ibias VCSW VCWS input voltage level input bias current comparator switching voltage level variation in comparator switching voltage levels within one IC note 1 -0.3 -1 6.8 -3.4 - - 9.2 - PARAMETER CONDITIONS MIN. TYP. TDA5341 MAX. VDD - 1.7 V 0 11.6 +3.4 UNIT A mV mV MOT1, MOT2 and MOT3; pins 60, 8 and 21 VDO drop-out voltage Io = 250 mA Io = 250 mA; Tamb = 70 C tr tf output rise time output fall time from 0.2 to 0.8VDD from 0.8 to 0.2VDD - - 10 10 - - 25 25 0.34 0.39 35 35 V V s s Output current limiting circuit; VILIM = 5 V; pin 23 IILIM VILIM IILIM(CR) limiting current (estimation) input voltage limiting current control range (estimation) RILIM = 20 k IILIM = 100 A Io I ILIM = --------------10000 1.15 2.43 0.01 1.25 2.51 - 1.35 2.60 1.3 A V A Output current control circuit; pin 24 VCNTRL CCPC Io(sink) Io(source) CextCP Io(sink) VCP Io(sink) Io(source) VSW(L) VSW(M) VSW(H) input voltage level control loop stability capacitor 0 - - 100 VDD - V nF A A CAPCPC; pin 22 output sink current output source current 30 -5.5 40 -3.5 - 1 9.9 50 -1.5 - 2.5 10.8 CAPCP; pin 27 external output capacitor for the charge pump output sink current charge pump voltage note 2 VDD = 0 V; Vclamp = 1.2 V 22 - 9.0 nF A V A A V V V CAPST; pin 1 output sink current output source current lower switching level middle switching level upper switching level 4.5 -7.0 - - - 6.0 -5.5 0.20 0.30 2.20 7.5 -4.0 - - - 1997 Jul 10 17 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL CAPTI; pin 2 Io(sink) IoH(source) IoL(source) VSW(L) VSW(M) VSW(H) Io(sink) Io(source) Isink/Isource VIL VIH Io(sink) Io(source) Isink/Isource VIL VIH FG; pin 10 VOL IOL IOH RF LOW level output voltage LOW level output current HIGH level output current ratio of FG frequency and commutation frequency duty factor Io = 0 A VOL = 1 V VOH = 4.5 V - 3.3 - - - -40 2.65 - -40 - - - 5.3 -83 1 50 -27 - - -24 0.5 - -40 - - - VDD 2.35 - - - output sink current HIGH level output source current LOW level lower source current lower switching level middle switching level upper switching level 25 -85 -7.5 - - - 35 -70 -5.0 30 0.3 2.2 45 -55 -2.5 - - - PARAMETER CONDITIONS MIN. TYP. TDA5341 MAX. UNIT A A A mV V V A A V V A A A V V CAPCDM; pin 18 output sink current output source current ratio of sink-to-source current LOW level input voltage HIGH level input voltage 13 -13.5 -2.2 0.82 2.20 20 -10 -2.0 0.87 2.28 27 -6.5 -1.8 0.92 2.37 CAPCDS; pin 19 output sink current output source current ratio of sink-to-source current LOW level input voltage HIGH level input voltage 13 -27 -1.1 0.82 2.20 20 -20 -1.0 0.87 2.28 27 -13 -0.9 0.92 2.37 V mA mA % A V V A BRAKE; pin 11 INM VNM VBM IBM CXA CYA Notes 1. Switching levels with respect to MOT1, MOT2 and MOT3. 2. CAPCP value is dependant of the powerless park and brake operations. normal mode current normal mode voltage brake mode voltage brake mode current VNM = 2.8 V Upper converter; pins 61 and 62 external pump capacitor pin 61 external pump capacitor pin 62 10 10 nF nF 1997 Jul 10 18 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control CHARACTERISTICS (RESET FUNCTION) VDD = 5 V; VDD1 and VDD2 > VDD is not allowed; Tamb = 25 C; unless otherwise specified. SYMBOL UVDIN1; pin 44 IUVDIN1 VUVDIN1 UVDIN2; pin 54 VUVDIN2 comparator voltage for power-up and power-down detection input current see Fig.8 1.280 1.315 load capacitance current to control the reset pulse width input voltage threshold to activate the reset output -2.3 2.4 -1.7 2.55 -1.3 2.75 PARAMETER CONDITIONS MIN. TYP. TDA5341 MAX. UNIT A V 1.340 V IUVDIN2 VPTH tdPU tdPD tPDW tW(min) Rpu VOL VUVDIN2 = 1.6 V see Fig.9 C = 0.1 F; see Fig.9 see Fig.9 see Fig.9 C = 0.1 F IOL = 8.5 mA -0.5 - 100 - 1.0 100 6 - - +0.5 - 200 4 4 - 14 0.5 A RESETOUT; pin 43 power threshold voltage power-up reset delay power-down reset delay power-down reset pulse width minimum output pulse width pull-up resistance LOW level output voltage 4.25 150 - - - 10 - V ms s s ms k V handbook, halfpage R2 VDD R1 UVDIN2 MGE818 ( R2 + R1 ) under-voltage threshold = 1.32 x ---------------------------R1 Fig.8 Reset mode threshold. 1997 Jul 10 19 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control TDA5341 handbook, full pagewidth VDD VPTH VDD tPDW < 1.2 s tdPU tPDW > 4 s tdPD td VOH RESETOUT VOL tW(min) MGE819 Fig.9 Reset mode timing. CHARACTERISTICS (VCM FUNCTION) VDD = 5 V; VDD1 and VDD2 > VDD is not allowed; Tamb = 25 C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. - - Vref 1.25 - 10.2 40 - 20 - - TYP. MAX. UNIT SENSEIN- and SENSEIN+; pins 51 and 52 VCS IiSENSE VSENSE IoSENSE GSENSE fco Vo(os) tRSA Vref; pin 36 Vref Iref reference input voltage reference input current 1.9 -5 2.6 +5 V A common input sense voltage input sense current 0 -250 VDD +250 V A SENSEOUT; pin 53 differential output voltage output sense current sense amplifier gain cross-over frequency output offset voltage recovery time from saturation ISENSEIN = 0 Vref = 1.9 to 2.6 V 0.5 -250 9.9 - -66 - 4.0 +250 10.5 - +66 - MHz mV s V A 1997 Jul 10 20 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL PARAMETER CONDITIONS - 0.7 9 RL = 40 ; note 1 - MIN. TYP. TDA5341 MAX. UNIT VCM+ and VCM-; pins 37 and 45 VCMdo IoLIM Gv VoPARK Vi Iibias Ii(os) VIH VIL IIH IIL RSW drop-out voltage output current limiting power amplifier voltage gain output park voltage Io = 400 mA 0.8 1.15 - 0.75 - - 25 - - - - - - - - 10 5 - - - - - - 1.0 1.5 12 - V V A VCMIN1 and VCMIN2 input voltage level input bias current input offset current 1.9 - - 2.6 0.25 - - 0.8 +10 +10 40 - V A nA GAINSEL; pin 15 HIGH level input voltage LOW level input voltage HIGH level input current LOW level input current switch resistance GAINSEL = LOW GAINSEL = HIGH FB1 and FB2; pins 28 and 29 Vi(os) VFB fco IoFB tRSB RSW input offset voltage feed-back differential output voltage cross-over frequency feed-back output current recovery time from saturation switch resistance GAINSEL = LOW GAINSEL = HIGH RETRACT; pin 30 VIH VIL IIH IIL VBM VNM HIGH level input voltage LOW level input voltage HIGH level input current LOW level input current 2 - -10 -20 - VDD - 0.85 - 0.8 +10 +10 V V A A VDD = 5.25 V -5 0.4 - -250 - - 10 +5 mV VDD - 0.45 V - +250 - 40 - MHz A s M 2 - -10 -20 - 10 V V A A M BRAKEDELAY; pin 46 brake mode threshold voltage normal mode voltage 0.75 - 1.0 - V V 1997 Jul 10 21 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL PARAMETER CONDITIONS MIN. -3.5 -250 - 1.7 - - IOL = 250 A IOH = -250 A - 4.3 - - 25 - 68 10 - - TYP. TDA5341 MAX. UNIT Uncommitted operational amplifier; pins 4 to 6 Vi(os) Ii(bias) Ii(os) VCM GOL fco VOL VOH Note 1. This is the PARK default value. Other values can be obtained with a metal mask change. CHARACTERISTICS (SPEED CONTROL FUNCTION) VDD = 5 V; VDD1 and VDD2 > VDD is not allowed; Tamb = 25 C; unless otherwise specified. SYMBOL FILTER; pin 32 Io(sink) Io(source) Isink/Isource ILO VIL VIH Ii CLOCK; pin 39 VIL VIH fclk ROSC; pin 48 VIL VIH frefOSC VIL VIH fDPULSE LOW level input voltage HIGH level input voltage reference oscillator frequency - 2.4 1 - 2.4 - - - - - - - 0.8 - 20 V V MHz LOW level input voltage HIGH level input voltage clock frequency - 2.4 - - - - 0.8 - 18 V V MHz output sink current output source current ratio of sink-to-source current charge pump leakage current 80 -110 0.9 -5 - 2.4 - 100 -90 1.1 - - - 0 120 -70 1.2 +5 nA A A PARAMETER CONDITIONS MIN. TYP. MAX. UNIT input offset voltage input bias current input offset current common mode voltage open loop gain cross-over frequency LOW level output voltage HIGH level output voltage +3.5 +250 - 2.6 - - 0.7 - mV nA nA V dB MHz V V DATA, RESET and ENABLE; pins 38, 57 and 42 LOW level input voltage HIGH level input voltage input current 0.8 - - V V A DPULSE; pin 35 LOW level input voltage HIGH level input voltage data pulse frequency 0.8 - 10 V V MHz 1997 Jul 10 22 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SYMBOL FMOT; pin 58 VOL LOW level output voltage duty factor IOL = 500 A - - - 50 - - - 0.1 - - - - PARAMETER CONDITIONS MIN. TYP. TDA5341 MAX. UNIT V % Timing; see Fig.10 tsu1 tsu2 th ENABLE set-up time DATA set-up time DATA hold time 8 6 10 ns ns ns handbook, full pagewidth CLOCK tsu1 ENABLE tsu2 th DATA SHIFTED DATA MGE824 Fig.10 Timing diagram. 1997 Jul 10 23 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control APPLICATION INFORMATION TDA5341 handbook, full pagewidth +5 V VDD1 VDD2 VDD3 VDD VDDD 64 40 16 41 CLAMP1 CLAMP2 3 26 60 8 21 MOT1 MOT2 MOT3 MOT0 ILIM SPINDLE MOTOR 25 CNTRL 24 C2 C1 R1 FILTER 32 FREDENA CLOCK DATA ENABLE RESET ROSC to microcontroller TESTIN RESETOUT BRAKE FG FMOT DPULSE 7 9 23 39 38 42 57 48 12 43 11 10 58 35 54 44 22 CAPCPC UVDIN1 UVDIN2 +5 V TDA5341 30 15 45 RETRACT GAINSEL VCM- Rs CAPCP CAPXA CAPXB CAPYA CAPYB CAPCDM CAPCDS CAPTI CAPST 37 27 51 61 52 59 53 62 33 63 28 18 34 19 29 2 46 1 50 14 55 31 49 17 36 Vref VEED VEE1 VEE2 VEE3 VEE4 VEE VCM+ SENSEIN- SENSEIN+ SENSEOUT VCMIN1 FB1 VCMIN2 FB2 CL2 CL1 Rf RIN1 input RIN2 BRAKEDELAY MGE826 Fig.11 Application diagram of the TDA5341 in a hard disk drive. 1997 Jul 10 24 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control PACKAGE OUTLINE LQFP64: plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm TDA5341 SOT314-2 c y X A 48 49 33 32 ZE e E HE wM bp 64 1 pin 1 index 16 ZD bp D HD wM B vM B vM A 17 detail X L A A2 A1 Q (A 3) Lp e 0 2.5 scale 5 mm DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.60 A1 0.20 0.05 A2 1.45 1.35 A3 0.25 bp 0.27 0.17 c 0.18 0.12 D (1) 10.1 9.9 E (1) 10.1 9.9 e 0.5 HD HE L 1.0 Lp 0.75 0.45 Q 0.69 0.59 v 0.2 w 0.12 y 0.1 Z D (1) Z E (1) 1.45 1.05 1.45 1.05 7 0o o 12.15 12.15 11.85 11.85 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT314-2 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION ISSUE DATE 94-01-07 95-12-19 1997 Jul 10 25 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Databook" (order code 9398 652 90011). Reflow soldering Reflow soldering techniques are suitable for all LQFP packages. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 C. Wave soldering Wave soldering is not recommended for LQFP packages. This is because of the likelihood of solder bridging due to closely-spaced leads and the possibility of incomplete solder penetration in multi-lead devices. TDA5341 If wave soldering cannot be avoided, the following conditions must be observed: * A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. * The footprint must be at an angle of 45 to the board direction and must incorporate solder thieves downstream and at the side corners. Even with these conditions, do not consider wave soldering LQFP packages LQFP48 (SOT313-2), LQFP64 (SOT314-2) or LQFP80 (SOT315-1). During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Maximum permissible solder temperature is 260 C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 C within 6 seconds. Typical dwell time is 4 seconds at 250 C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Repairing soldered joints Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C. 1997 Jul 10 26 Philips Semiconductors Product specification Brushless DC motor and VCM drive circuit with speed control DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values TDA5341 This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications. Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 Jul 10 27 Philips Semiconductors - a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 160 1010, Fax. +43 160 101 1210 Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6, 220050 MINSK, Tel. +375 172 200 733, Fax. +375 172 200 773 Belgium: see The Netherlands Brazil: see South America Bulgaria: Philips Bulgaria Ltd., Energoproject, 15th floor, 51 James Bourchier Blvd., 1407 SOFIA, Tel. +359 2 689 211, Fax. +359 2 689 102 Canada: PHILIPS SEMICONDUCTORS/COMPONENTS, Tel. +1 800 234 7381 China/Hong Kong: 501 Hong Kong Industrial Technology Centre, 72 Tat Chee Avenue, Kowloon Tong, HONG KONG, Tel. +852 2319 7888, Fax. +852 2319 7700 Colombia: see South America Czech Republic: see Austria Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S, Tel. +45 32 88 2636, Fax. +45 31 57 0044 Finland: Sinikalliontie 3, FIN-02630 ESPOO, Tel. +358 9 615800, Fax. +358 9 61580920 France: 4 Rue du Port-aux-Vins, BP317, 92156 SURESNES Cedex, Tel. +33 1 40 99 6161, Fax. +33 1 40 99 6427 Germany: Hammerbrookstrae 69, D-20097 HAMBURG, Tel. +49 40 23 53 60, Fax. +49 40 23 536 300 Greece: No. 15, 25th March Street, GR 17778 TAVROS/ATHENS, Tel. +30 1 4894 339/239, Fax. +30 1 4814 240 Hungary: see Austria India: Philips INDIA Ltd, Band Box Building, 2nd floor, 254-D, Dr. Annie Besant Road, Worli, MUMBAI 400 025, Tel. +91 22 493 8541, Fax. +91 22 493 0966 Indonesia: see Singapore Ireland: Newstead, Clonskeagh, DUBLIN 14, Tel. +353 1 7640 000, Fax. +353 1 7640 200 Israel: RAPAC Electronics, 7 Kehilat Saloniki St, PO Box 18053, TEL AVIV 61180, Tel. +972 3 645 0444, Fax. +972 3 649 1007 Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3, 20124 MILANO, Tel. +39 2 6752 2531, Fax. +39 2 6752 2557 Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108, Tel. +81 3 3740 5130, Fax. +81 3 3740 5077 Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL, Tel. +82 2 709 1412, Fax. +82 2 709 1415 Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR, Tel. +60 3 750 5214, Fax. +60 3 757 4880 Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905, Tel. +9-5 800 234 7381 Middle East: see Italy Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 40 27 82785, Fax. +31 40 27 88399 New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND, Tel. +64 9 849 4160, Fax. +64 9 849 7811 Norway: Box 1, Manglerud 0612, OSLO, Tel. +47 22 74 8000, Fax. +47 22 74 8341 Philippines: Philips Semiconductors Philippines Inc., 106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI, Metro MANILA, Tel. +63 2 816 6380, Fax. +63 2 817 3474 Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA, Tel. +48 22 612 2831, Fax. +48 22 612 2327 Portugal: see Spain Romania: see Italy Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW, Tel. +7 095 755 6918, Fax. +7 095 755 6919 Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231, Tel. +65 350 2538, Fax. +65 251 6500 Slovakia: see Austria Slovenia: see Italy South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale, 2092 JOHANNESBURG, P.O. Box 7430 Johannesburg 2000, Tel. +27 11 470 5911, Fax. +27 11 470 5494 South America: Rua do Rocio 220, 5th floor, Suite 51, 04552-903 Sao Paulo, SAO PAULO - SP, Brazil, Tel. +55 11 821 2333, Fax. +55 11 829 1849 Spain: Balmes 22, 08007 BARCELONA, Tel. +34 3 301 6312, Fax. +34 3 301 4107 Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM, Tel. +46 8 632 2000, Fax. +46 8 632 2745 Switzerland: Allmendstrasse 140, CH-8027 ZURICH, Tel. +41 1 488 2686, Fax. +41 1 481 7730 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel. +66 2 745 4090, Fax. +66 2 398 0793 Turkey: Talatpasa Cad. No. 5, 80640 GULTEPE/ISTANBUL, Tel. +90 212 279 2770, Fax. +90 212 282 6707 Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7, 252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461 United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes, MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421 United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel. +1 800 234 7381 Uruguay: see South America Vietnam: see Singapore Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD, Tel. +381 11 625 344, Fax.+381 11 635 777 For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 1997 Internet: http://www.semiconductors.philips.com SCA55 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 297027/1200/01/pp28 Date of release: 1997 Jul 10 Document order number: 9397 750 02621 |
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