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E94433A49-TE

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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.

Absolute Maximum Ratings (Ta=25°C)

• Supply voltage

7.0

V

• Write current

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

480

mW

Recommended Operating Conditions

• Supply voltage

5V±10%

V

Description

The CXA1829N is a Read/Write amplifier for hard

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

× 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

Ω).

• 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.

Structure

Bipolar silicon monolithic IC

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

30 pin SSOP (Plastic)

CXA1829N

For the availability of this product, please contact the sales office.