Description

The CXA3090N is a Read/Write Amplifier for the thin film head of hard disk drive and designed to handle up to 6 channel heads.

Features

• Operate on single +5 V power supply

• Low power consumption

Read : 85 mW

Write : 115 mW + IW ×5

• Designed for two terminal thin-film or MIG heads

• Read amplifier emitter follower output featuring 325 times gain (typ).

• Differential input capacitance for Read : 6pF (typ)

• Input noise : 0.47 nV / √ Hz (typ)

• Write current range : 5 to 15 mA

• Differential Head voltage swing : 6.8 Vp-p (typ)

• Differential P-ECL write data input

• Built-in write unsafe detection circuit.

• Built-in Servo write function (3/6 ch).

• Built-in IC protection circuit for short of head and GND.

• Read data outputs are high impedance in write mode.

• Unselected head voltage is GND potential.

• Built-in supply voltage monitor circuit prohibits incorrect write during power on or abnormal voltage.

• Self switching damping resistance (RD = 350 Ω).

Function

Read, Write and Write unsafe detection for HDD, power supply ON/OFF detection.