CXA3238TN Datasheet, PDF (1/27 Pages) Sony Corporation – 6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive

CXA3238TN/CXA3239TN
6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive
For the availability of this product, please contact the sales office.
Description
The CXA3238TN/CXA3239TN is a Read/Write
38 pin TSSOP (Plastic)
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
(RMR=50 Ω)
• Input noise of 0.77 nV/ √ Hz (typ.),
RMR=50 Ω, IB=6.0 mA.
• 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 ^…
Head selection
MR bias
Write current
Applications
Hard disk drives with GMR-Ind heads.
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC –0.3 to +6 V
• Supply voltage
VEE –4.5 to +0.3 V
• Digital input voltage
Vdi –0.3 to VCC+0.3 V
• Operating temperature Topr –20 to +70 °C
• Storage temperature Tstg –55 to +150 °C
• Allowable power dissipation
TSSOP38
PD
1000 mW
Operating Conditions
• Supply voltage
• MR bias voltage
• Bias current
• Write current
VCC +4.4 to +5.5 V
VEE –4.0 to –2.6 V
VMR –300 to +300 mV
IB
3 to 8 mA
IW
15 to 45 mA
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.
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