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Sony Semiconductor Electronic Components Datasheet

CXA1829N Datasheet

8ch. Read/Write Amplifier for Thin Film Heads of Hard Disk Drive

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CXA1829N
8ch. Read/Write Amplifier for Thin Film Heads of Hard Disk Drive
For the availability of this product, please contact the sales office.
Description
The CXA1829N is a Read/Write amplifier for hard
30 pin SSOP (Plastic)
disk drive thin-film heads and is designed to handle
up to 8-channel heads.
Features
Operates on a single 5V power supply.
Low power consumption.
Read: 115 mW
Write (IW = 15 mA): 160 mW + IW × 5
Power Save: 7 mW
Write current can be varied through an external
resistor. Built-in stabilizer circuit provides stable
current, preventing voltage and temperature drift.
Drives up to 8 heads.
Supports thin film heads or 2-pin MIG heads.
Emitter follower-type Read amplifier features 290
times gain (typ.).
Write-unsafe detection circuit.
Damping resistance is switched at Write (315 ).
Simultaneous Write function.
Supply voltage monitor circuit prohibits error
writing during power surge or abnormal voltage.
IC protection circuit for head-to-ground short circuit
protection.
Differential input capacitance at Read: 14 pF (typ.).
Write data input minimum pulse width: 10 ns
Read data output in Write mode becomes a high
impedance due to the improved Read data offset
when Write is switched to Read.
Non-selected head DC voltage falls to GND level.
Absolute Maximum Ratings (Ta=25°C)
Supply voltage
VCC 7.0
V
Write current
IW 20 mAo-p
Operating temperature Topr –20 to +75 °C
Operating temperature at Simultaneous Write
Topr –20 to +30 °C
Storage temperature Tstg –55 to +150 °C
Allowable power dissipation
PD 480
mW
Recommended Operating Conditions
Supply voltage
VCC 5V±10%
V
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E94433A49-TE


Sony Semiconductor Electronic Components Datasheet

CXA1829N Datasheet

8ch. Read/Write Amplifier for Thin Film Heads of Hard Disk Drive

No Preview Available !

Block Diagram and Pin Configuration
GND 1
H0X 2
H0Y 3
DRIVER
AMP
H1X 4
H1Y 5
H2X 6
H2Y 7
DRIVER
AMP
DRIVER
AMP
H3X 8
H3Y 9
DRIVER
AMP
H4X 10
H4Y 11
DRIVER
AMP
H5X 12
H5Y 13
DRIVER
AMP
H6X 14
H6Y 15
DRIVER
AMP
CXA1829N
30 GND
MODE
29 PS
CONTROL
28 R/W
WRITE
CURRENT
SOURCE
27 WC
AMP
26 RDY
25 RDX
HEAD
SELECT
24 HS0
23 HS1
22 HS2
POWER
ON/OFF
DETECTOR
21 VCC
IC
PROTECTOR
T - FF
20 WDI
WRITE
UNSAFE
DETECTOR
19 WUS
WRITE
SERVO
18 WSER
DRIVER
AMP
17 H7X
16 H7Y
—2—


Part Number CXA1829N
Description 8ch. Read/Write Amplifier for Thin Film Heads of Hard Disk Drive
Maker Sony Corporation
Total Page 15 Pages
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Sony Corporation





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