L6256 Datasheet PDF - STMicroelectronics

DESCRIPTION
The 12 Volt Combo chip is a combination spindle motor driver, voice coil driver and D/A converter. The part can be used in,application like HDD.
The VCM amplifiers drive a low impedance coil and are set up to accept RC compensation, which allows a wide bandwidth with absolute minimum phase lag. The sense resistor/amplifier arrangement allows full current loop operation. The loop gain is changeable by attenuating the VCM DAC voltage amplitude in cascadable stages.

OPERATING CONDITIONS
   VCC = 4.5 to 5.5V
   Vdd = 10.8 to 13.2V
   0°C < Tamb < 70°C.