CXA3541N Datasheet, PDF (1/17 Pages) Sony Corporation – 2-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive

CXA3541N
2-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive
Description
The CXA3541N is a read/write amplifier for GMR-Ind
(Giant Magneto Resistive-Inductive) heads used in
hard disk drives, and is capable of supporting up to
two channels.
24 pin SSOP (Plastic)
Features
• +5V and –3V power supply
• Current bias voltage sense type
• Low power 180mW at read
• Differential read amplifier gain; ×100/135 (RMR = 50Ω)
• Input noise of 0.77nV/√ Hz (typ.), RMR = 50Ω,
IB = 5.9mA
• Recovery time write to read; 300ns (typ.)
• Write data is triggered by differential P-ECL signal
• Servo bank write
• Write unsafe detection circuit
• Serial port
Head selection
MR bias
Write current
Applications
Hard disk drives with GMR-Ind heads
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCC
–0.3 to +5.8 V
• Supply voltage
VEE
–3.7 to +0.3 V
• Digital input voltage Vdi –0.3 to VCC + 0.3 V
• Operating temperature Topr
0 to +70 °C
• Storage temperature Tstg –55 to +150 °C
• Allowable power dissipation
PD
800 mW
(on board)
Operating Conditions
• Supply voltage
VCC
VEE
• MR bias voltage
VMR
• Bias current
IB
• Write current
IW
4.4 to 5.5 V
–3.5 to –2.6 V
–300 to +300 mV
3 to 8 mA
19.5 to 49.5 mA
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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E00205-PS