CXA3238TN Sony Corporation, CXA3238TN Datasheet

CXA3238TN

Manufacturer Part Number

CXA3238TN

Description

6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive

Manufacturer

Sony Corporation

Datasheet

1.CXA3238TN.pdf (27 pages)

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Description

amplifier for GMR-Ind (Giant Magneto Resistive-

Inductive) heads used in hard disk drives, and is

capable of supporting up to six channels.

Features

• +5 V and –3 V power supply.

• Current bias voltage sense type.

• Drives up to six heads (CXA3238TN)

• Drives up to four heads (CXA3239TN)

• Low power 180 mW at Read

• Differential read amplifier gain ; 140/190

• Input noise of 0.77 nV/ √ Hz (typ.),

• Recovery time write to read ; 300 nsec. (typ.)

• Write data is triggered by differential P-ECL signal.

• Servo bank write. (All channels)

• Write unsafe detection circuit.

• Serial port …

Applications

Structure

The CXA3238TN/CXA3239TN is a Read/Write

Hard disk drives with GMR-Ind heads.

Bipolar silicon monolithic IC

6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive

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.

Head selection

MR bias

Write current

CXA3238TN/CXA3239TN

=50 Ω, I

=6.0 mA.

=50 Ω)

—1—

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

• Digital input voltage

• Operating temperature

• Storage temperature

• Allowable power dissipation

Operating Conditions

• Supply voltage

• MR bias voltage

• Bias current

• Write current

TSSOP38

38 pin TSSOP (Plastic)

Topr

Tstg

Vdi –0.3 to V

–300 to +300 mV

–4.5 to +0.3

–55 to +150

+4.4 to +5.5

–4.0 to –2.6

–20 to +70

–0.3 to +6

15 to 45

3 to 8

1000

E98346C8Y

+0.3 V

°C

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