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PDF TA8496FL Data sheet ( Hoja de datos )
| Número de pieza | TA8496FL | |
| Descripción | Bipolar Linear Integrated Circuit Silicon Monolithic | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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Toshiba Bipolar Linear Integrated Circuit Silicon Monolithic
TA8496FL
Magnetic Head R/W IC
TA8496FL
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) × 160 (A))/RWR (typ.)
Block Diagram
Weight: 0.05 g (typ.)
VCC HDFB HDOUT AIN2 T1 FCNT AOUT2 AIN3
9 19 18 17 16 12 15 14
CFIL 10
Filter
VREF 24
VCC − VF − 0.3 V
COMIN 8
10 kΩ
100 kΩ
100 kΩ
100 Ω
40 dB
HEAD-AMP
10 kΩ
20 dB
20 dB
AMP2
ON/OFF 7
R/W 6
ENA 5
CLK 4
COM-AMP
Control circuit
H-SW control circuit
316 kΩ
30 dB
AMP3
13 AOUT3
21 AHDIN
20 ACOM
2 VBAT
22 HDIN
23 COM
3
WRCNT
1
WRGND
11
RDGND
1 2003-10-07
1 page  
Input/Output Circuit
• CLK pin
VREF
CLK 4
1 kΩ
GND
• ON/OFF pin
VREF
ON/OFF 7
50 kΩ
GND
TA8496FL
• ENA pin
VREF
50 kΩ
ENA 5
GND
• AOUT3 pin
VCC
• R/W pin
VREF
R/W 6
1 kΩ
GND
GND
13 AOUT3
Secondly L.P.F characteristics (amp 2)
30
10
3
1
0.3
0.1
13
10 30
100
Control resistance (kΩ)
(FCNT)
5 2003-10-07
5 Page 
Example of Application Circuit
TA8496FL
820 pF 0.1 µF
0.1 µF
VCC HDFB HDOUT AIN2 T1 FCNT AOUT2 AIN3
9 19 18 17 16 12 15 14
10
CFIL
Filter
24
VREF
VCC − VF − 0.3 V
8
COMIN
10 kΩ
100 kΩ
100 kΩ
100 Ω
40 dB
HEAD-AMP
10 kΩ
20 dB
20 dB
AMP2
COM-AMP
7
ON/OFF
CPU
6
R/W
5
ENA
4
CLK
Control block
High-switch control
block
316 kΩ
30 dB
AMP3
AD
13
AOUT3
21
AHDIN
20
ACOM
2
VBAT
22
HDIN
23
COM
HEAD
31
WRCNT 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
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TA8496FL.PDF ] | |
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