View TA8496FL_572304.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TA8496FL
Toshiba Bipolar Linear Integrated Circuit Silicon Monolithic
TA8496FL
Magnetic Head R/W IC
This IC enables writing and detection of magnetic recording signals.
Features
* * * Operating voltage range: VCC = 3.5 to 7 V VBAT = 1.8 to 7 V Output current: Iout = 20 mA (max) Constant current operating function : IOC = (0.25 (V) x 160 (A))/RWR (typ.) Weight: 0.05 g (typ.)
Block Diagram
VCC 9 HDFB HDOUT 19 18 10 k 100 VCC - VF - 0.3 V 30 k 30 k VREF 24 COMIN 8 40 dB HEAD-AMP 20 dB AMP2 AMP3 21 AHDIN 20 ACOM COM-AMP 2 VBAT ON/OFF 7 Control circuit R/W 6 ENA 5 H-SW control circuit CLK 4 22 HDIN 23 COM AIN2 17 10 k T1 16 100 k 10 k 20 dB 30 dB 13 AOUT3 FCNT 12 AOUT2 15 100 k AIN3 14 10 k 316 k
CFIL 10
Filter
3 WRCNT
1 WRGND
11 RDGND
1
2003-10-07
TA8496FL
Pin Function
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Symbol WRGND VBAT WRCNT CLK ENA R/W ON/OFF COMIN VCC CFIL RDGND FCNT AOUT3 AIN3 AOUT2 T1 AIN2 HDOUT HDFB ACOM AHDIN HDIN COM Vref GND for write block High-switch control power supply Write output setting pin High-switch operation control signal input High-switch enable signal input Read/write select signal input Chip enable signal input Internal reference voltage setting (fine adjustment) Power supply input pin Power supply filter connecting pin (C = 0.1 F) GND for read block Cut-off frequency setting pin Amp 3 output Amp 3 input Amp 2 output Amp 2 test pin Amp 2 input Head amp output Head amp feedback input COM amp output Head amp output Write output Write output VCC filter output (internal power supply) Description
Maximum Rating (Ta = 25C)
Characteristics Power Supply Voltage Input Voltage Output Current Operating Temperature Storage Temperature Symbol VCC VBAT VI IOUT Topr Tstg Rating 8 8 6 20 -20 to 70 -50 to 150 Unit V V V mA C C
Recommended Operating Conditions
Characteristics Power Supply Voltage Symbol VCC VBAT Rating 3.5 to 7.0 1.8 to 7.0 Unit V
2
2003-10-07
TA8496FL
Functions
Input ON/OFF R/W H L H L L L L H/L ENA H/L H H L L H/L CLK H/L H L L H H/L COM L H L Write Unit HDin H L L Enable Disable Disable Disable Disable Disable Read Unit
: High impedance
Electrical Characteristics
Interface Block (unless otherwise is specified, VCC = 5 V, VBAT = 3 V, Ta = 25C)
Characteristics Symbol VIN1-Hi Input Voltage VIN1-Lo VIN2-Hi VIN2-Lo IIN1-Hi IIN1-Lo Input Current IIN2-Hi IIN3-Hi IIN3-Lo IIN4-Hi 1 Test Circuit Test Condition ENA, ON/OFF ENA, ON/OFF CLK, R/W CLK, R/W CLK, VIN = 5 V CLK, VIN = 0 V ENA, VIN = 5 V R/W, VIN = 5 V R/W, VIN = 0 V ON/OFF, VIN = 5 V Min 2.5 1.5 Typ. 15 -85 85 15 -85 85 Max VCC 1.0 VCC 0.5 25 -120 120 25 -120 120 A V Unit
3
2003-10-07
TA8496FL
Read Block (unless otherwise is specified, VCC = 5 V, VBAT = 3 V, Ta = 25C)
Characteristics Symbol ICCR Current Dissipation ICCO Head amp Gain Characteristics Amp 2 Amp 3 Head Amp Input Conversion Noise Reference Voltage Head amp Output Offset Voltage Amp 2 Amp 3 Amp 3 Output Voltage Range Amp 3 Output Current Low High Output Input GH G2 G3 En1 En2 VACOM VHOS V2OS V3OS V3OL V3OH I3OUT I3IN 4 4 RL = 10 k 3 3 3 2 Test Circuit Test Condition When read block in operation When chip disabled (on/off = low or open) Rg = 0 , fc = 19 kHz Rg = 0 , fc = 1.7 kHz Min 1.9 2.0 0.1 Typ. 3.2 0 40 40 30 0.33 0.15 2.0 -0.1 +0.7 +0.1 0.2 4.1 0.2 Max 4.6 1 (0.64)* (0.26)* 2.1 0.25 1.1 0.25 0.3 V V Vrms V dB Unit mA A
mA
*: Guaranteed by design. Determined at design and does not change at manufacturing. Test not conducted.
Write Block (unless otherwise is specified, VCC = 5 V, VBAT = 3 V, Ta = 25C)
Characteristics Symbol ICCw ICCe ICCB Ibat IbaB Ibar Ibao Test Circuit Test Condition During write, CLK = Low/High When write enabled When write in break During write, reactive current Current Dissipation 2 (RWR = 5 k) When write in break During read When chip disabled (on/off = low or open) 5 IOC = 10 mA (at VBAT = 2.0 V) 0 to 10% 0 to 90% 6 0 to 10% 0 to 90% 0 to 10% 0 to 90% 6 0 to 10% 0 to 90% (Note1) (Note1) (Note1) (Note1) (Note1) (Note1) VBAT = 2.0 V VBAT = 5.0 V (Note1) (Note1) Min 8 Typ. 3.7 1.9 4.4 1.4 1.0 0 0 10 11 0.1 0.5 0.1 0.5 0.3 0.5 0.3 0.5 Max 5.2 2.8 6.1 1.8 1.6 1 A 1 12 mA 13 s s mA Unit
Set Output Current
IOC TpLH1
CLK Output Transfer Time
TpLH2 TpHL1 TpHL2 TpZH1
ENA Output Transfer Time
TpZH2 TpHZ1 TpHZ2
Note 1: Load RL = 36 , CL = 10 pF
4
2003-10-07
TA8496FL
Input/Output Circuit
* CLK pin
VREF 50 k 1 k CLK 4 1.0 V
*
ENA pin
VREF 50 k ENA 5 50 k
*
R/W pin
VREF 1 k R/W 6 1.0 V GND 50 k
GND
GND
*
ON/OFF pin
VREF
*
AOUT3 pin
VCC
GND
50 k
ON/OFF 7
GND
Secondly L.P.F characteristics (amp 2)
30
Cut-off frequency (kHz) (-3 dB)
10
3
1
0.3 0.1
1
200 A
50 k
13 AOUT3
3
10
30
100
Control resistance (k) (FCNT)
5
2003-10-07
TA8496FL
Test Circuit
1. Input Current (IIN1, IIN2, IIN3, IIN4)
10 k 5V 3V 820 pF 0.1 F 0.1 F
IIN1 IIN2 IIN3 IIN4 5V
9 VCC A A A A 4 CLK 5 ENA
2 19 18 17 VBAT HDFB HDOUT AIN2
12 15 14 FCNT AOUT2 AIN3 ACOM 20 AHDIN 21
TA8496FL 6 R/W 7 ON/OFF RDGND CFIL 11 10 0.1 F HDIN 22 COM 23 WRCNT WRGND 3 1 RWR = 5 k RL = 120
6
2003-10-07
TA8496FL
2. Current Consumption (ICCR, ICCO, ICCW, ICCe, ICCB, Ibat, IbaB, Ibar, Ibao)
10 k 820 pF 0.1 F A 5V 9 VCC 3V A 0.1 F
2 19 18 17 VBAT HDFB HDOUT AIN2
12 15 14 FCNT AOUT2 AIN3 ACOM 20 AHDIN 21
4 CLK 5V 5 ENA TA8496FL 6 R/W 7 ON/OFF RDGND CFIL 11 10 0.1 F
HDIN 22 COM 23 WRCNT WRGND 3 1 RWR = 3.9 k
Input Sequence (H = 5 V, L = 0 V)
Current Consumption (VCC, VBAT) ICCR ICCO ICCW ICCe ICCB Ibat (Note2) IbaB Ibar Ibao ON/OFF H L/OPEN H H H H H H L/OPEN R/W H H L L L L L H H/L ENA L H/L H L L H L H/L H/L CLK H H H/L H L H/L L H/L H/L
Note 2: SW. OFF
7
2003-10-07
RL = 120
SW.
TA8496FL
3. Gain Characteristics (GH, G2, G3), Power Off-Set Voltage (VHOS, V2OS, V3OS)
VHDOUT VIN2 VAOUT2 VIN3
9 VCC 6 R/W 7 ON/OFF 5V
2 19 18 17 VBAT HDFB HDOUT AIN2
12 15 14 FCNT AOUT2 AIN3 AOUT3 13 V VAOUT3 SW.
TA8496FL
10 k
5V
3V
V 820 pF
SW.
V
SW.
AHDIN 21 ACOM 20
VHDIN
GH = 20 log
VHDOUT , G2 = 20 log VHDIN
VAOUT2 , G3 = 20 log VIN2
RWR = 5 k
RDGND CFIL 11 10 0.1 F
WRCNT WRGND 3 1
V
VAOUT3 VIN3
When off-set voltage is measured, SW turns ON. VHOS = |VHDOUT|, V2OS = |VAOUT2|, V3OS = |VAOUT3|
4. Amp 3 Output Voltage Range (V3OL, V3OH), Amp 3 Output Current (I3OUT, I3IN)
VCC 10 k 5V 3V 820 pF 0.1 F 0.1 F 100 A
VACOM V V30L 10 k V V30H
9 VCC 6 R/W 7 ON/OFF 5V
2 19 18 17 VBAT HDFB HDOUT AIN2
12 15 14 FCNT AOUT2 AIN3
I3IN
AOUT3 13 A (Note3) V TA8496FL AHDIN 21 ACOM 20 2 mA VIO WRGND 1
RDGND CFIL 11 10 0.1 F
Note 3: I3OUT must be measured on condition in VIO > 4.0 V =
8
2003-10-07
TA8496FL
5. Set Output Current (IOC)
2 V/5 V 9 VCC 5V 4 CLK HDIN 22 5 ENA TA8496FL 6 R/W COM 23 7 ON/OFF RDGND 11 WRCNT WRGND 3 1 RWR RL = 120 A IOC 2 VBAT
Set RWR so that IOC = 10 mA (at VBAT = 2 V). At this time, due to fluctuation in samples, IOC fluctuates in the range of 8 to 12 mA. Also, IOC fluctuates depending on the power supply (VBAT) as follows: IOC = 10 mA (at VBAT = 2 V) IOC 13 mA (at VBAT = - 5 V).
5V
9
2003-10-07
TA8496FL
6. CLK, ENA Output Propagation Time (TpLH1/2, TpHL1/2, TpZH1/2, TpHZ1/2)
10 k 820 pF 0.1 F 0.1 F
5V
9 VCC 4 CLK 5 ENA
3V
2 19 18 17 VBAT HDFB HDOUT AIN2
12 15 14 FCNT AOUT2 AIN3 ACOM 20 AHDIN 21 Current probe RL = 36 CL = 10 pF
TA8496FL 6 R/W 7 ON/OFF 5V RDGND CFIL 11 10 0.1 F HDIN 22 COM 23 WRCNT WRGND 3 1 RWR
RWR: IOC is set 10 mA.
CLK Input Voltage Waveform
50%
50%
Output Current Waveform
90% 10% TpLH1 TpLH2 TpHL1 TpHL2 50%
90% 10%
+10 mA GND -10 mA
ENA Input Voltage Waveform
50%
TpHZ2 TpHZ1 90% 10% 90% 10% TpHZ1 TpHZ2
TpZH2 TpZH1 90% 10% 90% 10% TpZH1 TpZH2 +10 mA GND -10 mA
10
2003-10-07
TA8496FL
Example of Application Circuit
3.5 to 7.0 V 820 pF 0.1 F VCC 0.1 F
9
HDFB HDOUT AIN2 T1 FCNT AOUT2 AIN3 19 18 17 16 12 15 14 10 k 10 k 100 100 k 10 k 40 dB HEAD-AMP 20 dB AMP2 AMP3 21 20 20 dB 30 dB 13 AOUT3 AHDIN ACOM VBAT 1.8 to 7.0 V HEAD 100 k 10 k 316 k
0.1 F
CFIL VREF COMIN
10 24 8
Filter 30 k
AD
VCC - VF - 0.3 V
30 k COM-AMP
2 7 Control block 6 5 4 22 23 High-switch control block
ON/OFF R/W ENA CLK
CPU
HDIN COM
0.25 V (typ.)
3 WRCNT
1 WRGND
11 RDGND
Note 4: Operating supply voltage range VCC = 3.5 to 7.0 V, VBAT = 1.8 to 7.0 V However, set VCC so that VACOM VBAT + 0.5 V. VCC VBAT. (VACOM = (VCC - VF - 0.3)/2) By connecting a resistor to the COMIN pin, VACOM can be varied. Note 5: The IC may be damaged by shorts between pins, to the power supply, or to ground. Take great care when designing lines.
11
2003-10-07
TA8496FL
Requests Concerning Use of QON
Outline Drawing of Package
(Upper surface) (Lower surface)
When using QON, please take into account the following items.
Caution
(1) (2) Do not carry out soldering on the island section in the four corners of the package (the section shown on the lower surface drawing with diagonal lines) with the aim of increasing mechanical strength. The island section exposed on the package surface (the section shown on the upper surface drawing with diagonal lines) must be used as (Note 6) below while electrically insulated from outside. Note 6: Ensure that the island section (the section shown on the lower surface drawing with diagonal lines) does not come into contact with solder from through-holes on the board layout. * * When mounting or soldering, take care to ensure that neither static electricity nor electrical overstress is applied to the IC (measures to prevent anti-static, leaks, etc.). When incorporating into a set, adopt a set design that does not apply voltage directly to the island section.
12
2003-10-07
TA8496FL
Package Dimensions
Weight: 0.05 g (typ.)
13
2003-10-07
TA8496FL
RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
030619EBA
* The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations.
14
2003-10-07

▲Up To Search▲

Price & Availability of TA8496FL

	To Download TA8496FL Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .