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| YAC523 EVR2 Electric Variable Resistance 2 Outline YAC523 (EVR2) is a 7ch high grade digital volume LSI for high-end audio systems. Owing to its built-in high-quality sound operational amplifier, output with wide dynamic range and low distortion factor can be obtained. YAC523 is able to control each channel through a serial data interface in 255 steps at 0.5dB per step, and can allow configuration of a system with 8 channels or more by using a daisy chain connection. Owing to its zero-cross detection function, the device is able to suppress audible noise that may occur at a quick volume change. Features Built-in 7channel high sound quality operational amplifier. Wide volume range. 31.5dB 95.0dB, MUTE (0.5dB/step, 255 steps) Maximum input signal amplitude 4.2Vrms (6V power supply) Low distortion (THD) 0.0004 typ. (Input=1Vrms@1kHz, Gain=0dB Low residual noise 1.2Vrms typ. (Gain=MUTE, IHF-A) Power supply voltage 4.75V6.6V Silicon gate CMOS process. 48-pin plastic LQFP (YAC523-VZ) YAC523CATALOG CATALOG No.:LSI-4AC523A2 2003.5 YAC523 Terminal configration YAC523-VZ OUT1 OUT3 OUT4 OUT5 OUT2 OUT6 OUT7 NC NC 36 35 34 33 32 31 30 29 28 27 26 NC AVSS ZCEN1 ZCEN2 CSN SDATAI SCLK SDATAO TE2 TE1 DGND REF AVSS 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 25 24 23 22 21 20 19 18 17 16 15 14 13 REF1B NC REF1A REF2B REF2A REF3B REF3A REF4B REF4A REF5A REF5B REF6A REF6B REF7A AVDD AVDD IN1 IN2 IN3 IN4 IN5 IN6 AVSS IN7 AVSS <48 pin LQFP TopView> 2 REF7B YAC523 Terminal function Function Minus power supply for analog (-6.0V Typ.) Plus power supply for analog (+6.0V Typ.) ch1 analog input When avoid the use of this terminal, connect to ground. ch2 analog input And please use the output impedance of the source of input ch3 analog input signal less than 2.2k. ch4 analog input ch5 analog input ch6 analog input ch7 analog input Plus power supply for analog (+6.0V Typ.) Minus power supply for analog (-6.0V Typ.) ch7 analog reference voltage input 7B Connect to ground directly. ch7 analog reference voltage input 7A Connect to ground through 33F. ch6 analog reference voltage input 6B Connect to ground directly. ch6 analog reference voltage input 6A Connect to ground through 33F. ch5 analog reference voltage input 5B Connect to ground directly. ch5 analog reference voltage input 5A Connect to ground through 33F. ch4 analog reference voltage input 4A Connect to ground through 33F. ch4 analog reference voltage input 4B Connect to ground directly. ch3 analog reference voltage input 3A Connect to ground through 33F. ch3 analog reference voltage input 3B Connect to ground directly. ch2 analog reference voltage input 2A Connect to ground through 33F. ch2 analog reference voltage input 2B Connect to ground directly. ch1 analog reference voltage input 1A Connect to ground through 33F. ch1 analog reference voltage input 1B Connect to ground directly. Non connection or connect to ground. Non connection or connect to ground. ch7 analog output ch6 analog output ch5 analog output ch4 analog output ch3 analog output ch2 analog output ch1 analog output Non connection or connect to ground. Non connection or connect to ground. Minus power supply for analog (-6.0V Typ.) Zero-cross control input 1. Select one from four types of zero-cross modes including non-zerocross mode. When changing zero-cross modes during operation, set the system so that it changes at 1 second or more after the rise of CSN signal. I Zero-cross control input 2. Select one from four types of zero-cross modes including non-zero39 ZCEN2 cross mode. When changing zero-cross modes during operation, set the system so that it changes at 1 second or more after the rise of CSN signal. I Chip select input 40 CSN I Serial data input 41 SDATAI I Serial clock input 42 SCLK 43 SDATAO OD Serial data output Serial data are outputted from this terminal when CSN pin is "L" level. This terminal becomes high-impedance state when CSN pin is "H". Since it is an open drain output pin, pull it up through a resistor to the power supply voltage (to be AVDD or less) of a device to be connected. Do not allow output current of 1.5mA or over. I Test terminal Non connection or connect to DGND terminal. 44 TE2 I Test terminal Non connection or connect to DGND terminal. 45 TE1 - Digital ground 46 DGND O Reference voltage output for digital For attaining stabilization, connect this terminal to 47 REF AVSS terminal through a capacitance of 10F or higher (CREF). And please do not use this terminal output for the drive purpose of an external circuit. - Minus power supply for analog (-6.0V Typ.) 48 AVSS Note A: analog terminal, OD: Open drain output terminal, "L" level means VIL, "H" level means VIH. 3 No. Name 1 AVSS 2 AVDD 3 IN1 4 IN2 5 IN3 6 IN4 7 IN5 8 IN6 9 IN7 10 AVDD 11 AVSS 12 REF7B 13 REF7A 14 REF6B 15 REF6A 16 REF5B 17 REF5A 18 REF4A 19 REF4B 20 REF3A 21 REF3B 22 REF2A 23 REF2B 24 REF1A 25 REF1B 26 NC 27 NC 28 OUT7 29 OUT6 30 OUT5 31 OUT4 32 OUT3 33 OUT2 34 OUT1 35 NC 36 NC 37 AVSS 38 ZCEN1 I/O - - AI AI AI AI AI AI AI - - AI AI AI AI AI AI AI AI AI AI AI AI AI AI - - AO AO AO AO AO AO AO - - - I YAC523 Internal block diagram IN1 Vol B: 50k 0-95dB 0+31.5dB OPAmp 100 OUT1 REF1B REF1A IN2 Vol B: 50k Vol A: 15k 0-95dB 0+31.5dB OPAmp 100 OUT2 REF2B REF2A IN3 Vol B: 50k Vol A: 15k 0-95dB 0+31.5dB OPAmp 100 OUT3 REF3B REF3A IN4 Vol B: 50k Vol A: 15k 0-95dB 0+31.5dB OPAmp 100 OUT4 REF4B REF4A Zero Crossing Detector Vol A: 15k CH1,2,3,4 Control AVDD DGND REF AVSS Zero Crossing Detector 56 CH5,6,7 Control Control Register S/P Register TE1 TE2 ZCEN2 ZCEN1 SDATAO(OpenDrain) SDATAI SCLK CSN REF5A REF5B Vol B: 50k Vol A: 15k OPAmp 0+31.5dB 0-95dB 100 OUT5 IN5 REF6A REF6B Vol B: 50k Vol A: 15k OPAmp 0+31.5dB 0-95dB 100 OUT6 IN6 REF7A REF7B Vol B: 50k Vol A: 15k OPAmp 0+31.5dB 0-95dB 100 OUT7 IN7 4 YAC523 Description of functions Analog functions Maximum input voltage The maximum amplitude of the input signal that is inputted to the analog input pin of YAC523 is 4.2Vrms when power supply voltage is 6V. For a system to which a signal exceeding the power supply voltage (AVDD/AVSS) may be applied, use external diodes to suppress the signal to the maximum rating or less. Maximum output voltage The maximum output voltage(THD<1) of the signal that is outputted from the analog output pin of YAC523 is 4.2Vrms when power supply voltage is 6V and no load is connected. The output impedance is 100 (typ.). Realization of low residual noise system General audio amplifiers are designed to have input sensitivity of approximately 150mV, and have a gain of approximately 16dB at the preamplifier (PreAMP) section and approximately 30dB at the main amplifier section (MainAMP). The residual noise of YAC523 (Gain=-) is 1.2Vrms (typ.) which is very small, and the device has positive side gain (max: 31.5dB). Therefore, by using YAC523 also as "PreAMP", systems with a very small residual noise and amplification of volume control noise can be configured. For conventional configurations that need a "PreAMP", even if the residual noise of the volume control itself is zero, the noise that is produced at the "PreAMP" is amplified by the gain, the noise becomes very high when it is heard at the speakers. When the input converted noise of "PreAMP" is 1V, the conventional configuration produces noise of approximately 200V at the speakers. For the configuration that uses YAC523, the noise is 38V which is very small. Residual noise produced by conventional configuration 1Vrms 6.3Vrms 200Vrms Residual noise produced by a configuration that adopts YAC523 1.2Vrms YAC523 38Vrms +16dB +30dB Zin=50k +30dB Volume PreAMP MainAMP -+16dB Volume + PreAMP MainAMP 5 YAC523 Digital functions Serial data interface Writing of volume control data into YAC523 is performed through a serial interface. SDATAI is a serial data input pin, SCLK is a clock input pin, and CSN is a chip select pin for writing the value of volume. The serial data that is inputted from SDATAI (MSB first) is taken into YAC523 at the rising edge of SCLK when CSN terminal is at "L" level. The serial data is latched at the rising edge of CSN, and volume value of each channel is set into the register. The present volume value is outputted from SDATAO pin as serial data. With this data, the control by using daisy chain connection and verification of the present volume value can be performed easily. Note that the register value after turning the power supply on is ALL"0" (muted state) and the interface is enabled after a predetermined period (tPUP) has elapsed. (Serial access is prohibited in tPUP period.) CSN SCLK SDATAI SDATAO D1[55] D1[54] D1[53] D1[52] D1[51] D1[50] D1[7] D1[6] D1[5] D1[4] D1[3] D1[2] D1[1] D1[0] D0[55] D0[54] D0[53] D0[52] D0[51] D0[50] D0[7] D0[6] D0[5] D0[4] D0[3] D0[2] D0[1] D0[0] D1[55] Assignment of volume control data D[55:48] Channel1 Volume data D[47:40] Channel2 Volume data D[39:32] Channel3 Volume data D[31:24] Channel4 Volume data D[23:16] Channel5 Volume data D[15: 8] Channel6 Volume dataD1[55:0] is volume data value to change. D[ 7: 0] Channel7 Volume dataD0[55:0] is present volume data value. Daisy chain Since multiple YAC523 devices can be connected by using the daisy chain connection, systems with 8 channels or more can be attained. For example, by connecting the device with YAC526 (2ch digital volume) through daisy chain, 8.1ch system can be attained. By connecting SDATAO pin of YAC523 (or YAC526) to SDATAI pin of YAC526 (YAC523), YAC523 and YAC526 can be controlled simultaneously without need of a complex addressing. (It is also possible to connect multiple YAC523, or to connect the device with YAC520 through daisy chain.) The volume data is taken into S/P (serial / parallel) registers of each LSI by setting CSN pin to "L" for 8 clock period on all channels that are connected with daisy chain. And, by setting CSN pin to "H" after the elapse of 8 clock period on all channels, the data is written from S/P registers of all YAC523 (or YAC526) that are connected with daisy chain into the control registers simultaneously to change the volume value. Example: Assignment of volume control data when a combination of YAC523 and YAC526 (or YAC520) as described below is used. Audio source 2 OUT IN 2 7 OUT IN 7 YAC526 or YAC520 SDATAO CSN SDATAI SCLK 5V YAC523 SDATAO CSN SDATAI SCLK D[71:64] [YAC526 or YAC520] Channel1 Volume data D[63:56] [YAC526 or YAC520] Channel2 Volume data D[55:48] [YAC523] Channel1 Volume data D[47:40] [YAC523] Channel2 Volume data D[39:32] [YAC523] Channel3 Volume data D[31:24] [YAC523] Channel4 Volume data D[23:16] [YAC523] Channel5 Volume data D[15: 8] [YAC523] Channel6 Volume data D[ 7: 0] [YAC523] Channel7 Volume data 5V Controller CSN SCLK SDATAI 6 D[71] D[70] D[69] D[68] D[67] D[66] D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0] YAC523 Volume setting The relationship between input code and volume value is as shown in the following table. Input code 11111111 11111110 Gain or attenuate(dB) MUTE +31.5 11011111 +16.0 10111111 0 00000010 00000001 00000000 -94.5 -95.0 MUTE The input codes ALL"0" and ALL"1" are set for mute. Zero-cross mode YAC523 incorporates the zero-cross detection function to suppress audible noise when the volume is changed quickly. A mode is selected from the following four modes by setting ZCEN1 and 2 pins. ZCEN[2:1] 00 01 10 11 Normal Zero-cross mode A Zero-cross mode B Zero-cross mode C Mode Operation Zero-cross is not detected, and the volume value is changed immediately after the rising of CSN. Zero-cross is detected after the rising of CSN, or after tTM1 (20ms) passes, volume value is changed. Zero-cross is detected after the rising of CSN, or after tTM2 (10ms) passes, volume value is changed. When the next data is written within tTM1 (20ms) for zero-cross mode A, the changed is performed at the falling of CSN by using the volume value immediately before. No zero-cross No zero-cross t < tTM & t < tTM & No zero-cross t < tTM & No zero-cross t < tTM & t tTM CSN SDATAI Volume value (Zero-cross mode A, B) Volume value (Zero-cross mode C) -12dB -9dB -6dB -15dB(Last value) -3dB 0dB 0dB -15dB(Last value) -12dB -9dB -6dB -3dB 0dB Operation in each zero-cross mode when zero-cross is not detected Be careful not to change the zero-cross mode during the operation of the device, or an erroneous operation may be caused. Perform change of zero-cross mode after the elapse of 1 second or more from the rising of CSN signal. Power on reset YAC523 builds in the power on reset function that resets the volume value when the power is turned on. Since a system that perform the reset by detecting the power supply voltage level, when turning on the power supply again, do it after the power supply voltage AVDD and AVSS has reduced sufficiently (to +1.0V/ -1.0V or less). Moreover, although a volume register is reset at the time of a power supply injection, since shocking sound occurs in the case of power supply ON/OFF, please apply mute to the whole set. Power on reset is started when AVSS is 90%. At the time, AVDD should rise +1V or more. Since power-on reset may be unable to be completed when conditions cannot be fulfilled, please perform a re-setup of a volume register before canceling MUTE by the side of a set. 7 YAC523 Electrical characteristics 1.Absolute maximum rating Item Power supply voltage Analog input terminal voltage Digital input terminal voltage Storage temperature Note : DGND=0V Symbol AVDD-AVSS VINA VIND TSTG Min. AVSS -0.6 AVSS -0.3 -50 Max. 14.0 AVDD+0.6 and VINA-AVSS < 14.0V AVDD+0.3 125 Unit V V V 2. Recommended operating conditions Item Symbol Analog power supply voltage(Positive) AVDD Analog power supply voltage(Negative) AVSS Operating ambient temperature TOP Note : DGND=0V Min. 4.75 -6.60 -40 Typ. 6.00 -6.00 Max. 6.60 -4.75 85 Unit V V 3. Analog characteristics (Ta=25, AVDD=+6.0V, AVSS=-6.0V) Item Symbol Min. Typ. Gain range Gain -95.0 Step size 0.5 Gain matching between channel (0-40dB, 1kHz) 0.1 Gain matching between channel (-80dB, 1kHz) 0.2 Step error (-80dB) 0.1 Input resistance RI 50 Output resistance RO 100 Load capacitance 5 RL Input capacitance CI Load capacitance CL VI Maximum input voltage (THD<1, RL=) VO Maximum output voltage (THD<1, RL=) Output noise voltage1 (In=GND, Vol=+16dB) *1 Vn1 10.0 Output noise voltage2 (In=GND, Vol=0dB) *1 Vn2 2.5 *1 Vn3 Output noise voltage3 (In=GND, Vol=Mute) 1.2 Total harmonic distortion (In=1Vrms, Vol=0dB, 1kHz) *2 THD1 0.0004 Total harmonic distortion (In=1Vrms, Vol=0dB, 20kHz) *3 THD2 0.0055 Inter channel isolation (Vol=0dB, 1kHz) Cs -115 Note : *1 : Input of other channels are analog ground, Band Width=IHF-A *2 : Input of other channels are analog ground, Band Width=400Hz30kHz *3 : Input of other channels are analog ground, Band Width=400Hz Max. +31.5 Unit dB dB dB dB dB k k pF pF Vrms Vrms Vrms Vrms Vrms dB 10 100 4.2 4.2 4. Power consumption Item Symbol Power consumption(AVDD=+6V, AVSS=-6V, CSN="H") PD Min. Typ. 360 Max. Unit mW 5. DC characteristics Item High level input voltage Low level input voltage Low level output voltage Input leakage current Symbol VIH VIL VOL ILI Condition Min. 2.2 Typ. Max. 0.8 0.4 10 Unit V V V A IO= 1.5mA 8 YAC523 6. AC characteristicsCL=20pF Item Serial clock frequency Serial clock pulse width high Serial clock pulse width Low SDATAI set up time SDATAI hold time CSN pulse width High CSN set up time CSN hold time SDATAO data output set up time SDATAO output delay time SDATAO output data hold time (data output stop) CSN, SCLK rise time CSN, SCLK fall time Zero-cross time out (Zero-cross MODE=A, C) Zero-cross time out (Zero-cross MODE=B) Regulation time until the data writing from a power supply injection (more than AVSS=90%) to LSI becomes effective. (CREF=10F) Symbol SCLK tPH tPL tSDVS tSDH tCSPH tCSVS tLTH tCSH tSSD tCSDH tR tF tTM1 tTM2 tPUP Min. 0 500 500 200 200 1000 500 200 Typ. Max. 1.0 Unit MHz ns ns ns ns ns ns ns ns ns ns ns ns ms ms ms 300 300 200 100 100 20 10 20 50 tF 90% tCSPH VIH VIH CSN VIL 10% VIL tCSVS SCLK VIH VIL tPH VIH VIL tLTH tSDVS VIH VIL tR 90% VIL 10% VIL tPL tSDH VIH VIL VIH VIL SDATAI tCSDH SDATAO VOL MSB tSSD VOL VOL tCSH Fig 1 Serial port timing 9 YAC523 Typical analog characteristic 10 YAC523 11 YAC523 12 YAC523 Example of system configuration When there is a fear that voltage exceeding the maximum rating is applied to the analog input pins (IN1 to IN7) of YAC523, connect diodes between AVDD and AVSS as shown below to prevent application of voltage exceeding the maximum rating to the input pins. Please make an analog domain and a digital domain into the ground side separated, respectively, and arrange YAC523 to an analog domain and the impedance to an AVSS pin should become small as much as possible. And please secure an area large enough, and a radiation noise should fully be stopped and an analog ground and a digital ground also make it. Control signals, such as serial interface, should wire a digital ground side collectively. In order to prevent interference with a control signal and an analog signal, be careful for an analog signal and a digital signal not to cross or not to adjoin. Analog input terminal protection AVDD IN1IN7 AVSS VDD( 2.2k 2.2k 2.2k 2.2k 2.2k 2.2k 2.2k 10F 47 46 45 SDATAO 42 SCLK 41 SDATAI 40 CSN 39 ZCEN2 38 ZCEN1 37 AVSS 44 43 0.1F AVSS TE1 DGND REF TE2 AVSS AVDD IN1 IN2 IN3 IN4 IN5 IN6 IN7 AVDD AVSS REF7B REF7A REF6B REF6A REF5B NC NC OUT1 OUT2 OUT3 36 35 34 33 10F 32 10F 31 10F 30 10F 29 10F 28 10F 27 10F 26 25 10k 10k 10k 10k 10k 10k 10k 10F 10F 10F 10F 10F 10F 10F 4 5 6 7 8 9 10 11 12 YAC523 OUT4 OUT5 OUT6 OUT7 NC NC REF1B REF4A REF4B REF3A REF3B REF2A REF2B 23 33F 13 14 15 16 17 18 REF5A 19 20 21 22 33F 33F 33F 33F 33F 24 33F REF1A 0.1F 0.1F 13 YAC523 MEMO 14 YAC523 External dimensions of package YAC523-VZ The shape of the molded corner may slightly different from the shape in this diagram. The figure in the parenthesis ( ) should be used as a reference. Plastic body dimensions do not include burr of resin. UNIT: mm ! ipf !"#$% !"#$%&'()*+,-./01 !"#$%&'()*+,-./012-3 kciEWqUE=ipfe=Nce=eieN~AE=aciai=aEEC=eeEAa~a=AcaeaCEe~iaca=ca=eice~OE=~aC=ecaCEeaaO=AcaCaiacaeK =========cce=CEi~aaEC=aaNcea~iacaI=eaE~eE=Acai~Ai=ocie=aE~eEei=v~a~U~=~OEaiK 15 YAC523 IMPORTANT NOTICE 1. Yamaha reserves the right to make changes to its Products and to this document without notice. The information contained in this document has been carefully checked and is believed to be reliable. However, Yamaha assumes no responsibilities for inaccuracies and makes no commitment to update or to keep current the information contained in this document. 2. These Yamaha Products are designed only for commercial and normal industrial applications, and are not suitable for other uses, such as medical life support equipment, nuclear facilities, critical care equipment or any other application the failure of which could lead to death, personal injury or environmental or property damage. Use of the Products in any such application is at the customer's sole risk and expense. 3. YAMAHA ASSUMES NO LIABILITY FOR INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES OR INJURY THAT MAY RESULT FROM MISAPPLICATION OR IMPROPER USE OR OPERATION OF THE PRODUCTS. 4. YAMAHA MAKES NO WARRANTY OR REPRESENTATION THAT THE PRODUCTS ARE SUBJECT TO INTELLECTUAL PROPERTY LICENSE FROM YAMAHA OR ANY THIRD PARTY, AND YAMAHA MAKES NO WARRANTY OR REPRESENTATION OF NONINFRANGIMENT WITH RESPECT TO THE PRODUCTS. YAMAHA SPECIALLY EXCLUDES ANY LIABILITY TO THE CUSTOMER OR ANY THIRD PARTY ARISING FROM OR RELATED TO THE PRODUCTS' INFRINGEMENT OF ANY THIRD PARTY'S INTELLECTUAL PROPERTY RIGHTS, INCLUDING THE PATENT, COPYRIGHT, TRADEMARK OR TRADE SECRET RIGHTS OF ANY THIRD PARTY. 5. EXAMPLES OF USE DESCRIBED HEREIN ARE MERELY TO INDICATE THE CHARACTERISTICS AND PERFORMANCE OF YAMAHA PRODUCTS. YAMAHA ASSUMES NO RESPONSIBILITY FOR ANY INTELLECTUAL PROPERTY CLAIMS OR OTHER PROBLEMS THAT MAY RESULT FROM APPLICATIONS BASED ON THE EXAMPLES DESCRIBED HEREIN. YAMAHA MAKES NO WARRANTY WITH RESPECT TO THE PRODUCTS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE AND TITLE. Note) The specifications of this product are subject to change without notice. Agency Semiconductor Sales & Marketing Department Head Office 203, Matsunokijima, Toyooka-mura, Iwata-gun, Shizuoka-ken, 438-0192, Japan Tel. +81-539-62-4918 Fax. +81-539-62-5054 Tokyo Office 2-17-11, Takanawa, Minato-ku, Tokyo, 108-8568, Japan Tel. +81-3-5488-5431 Fax. +81-3-5488-5088 Osaka Office 3-12-12, Minami Senba, Chuo-ku Osaka City, Osaka, 542-0081, Japan Tel. +81-6-6252-6221 Fax. +81-6-6252-6229 Copying prohibited 2003 YAMAHA CORPORATION Printed in Japan C |
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