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8980 - SUPERSERVO SPINDLE & VOICE-COIL ACTUATION MANAGER/DRIVER

Datasheet Summary

Description

Servo-Demand DAC.

A 12-bit DAC is provided to bridge the DSP “soft” domain to the analog hardware domain.

The term “demand” refers to the distinction between the newly requested voice-coil current and the prior current being supplied.

Features

  • and system diagnostics are provided via a serial interface under the direction of an external microcontroller. The large-scale integration and use of advanced DABiC™ (digital/analog-BiCMOS) merged technologies results in minimum power dissipation, minimum operating voltage requirements, and minimum external components. The spindle drive function incorporates a three-phase MOS power driver and a back-EMF sensing motor commutation scheme. Internal logic and analog circuitry provide complete start-.

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Datasheet Details

Part number 8980
Manufacturer Allegro MicroSystems
File Size 81.52 KB
Description SUPERSERVO SPINDLE & VOICE-COIL ACTUATION MANAGER/DRIVER
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Full PDF Text Transcription

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8980 SUPERSERVO™ SPINDLE & VOICE-COIL ACTUATION MANAGER/DRIVER 8980 TM The A8980CJT provides complete drive, management, and control of the voice-coil and spindle motor power actuation subsystems used in hard disk drives. Extensive programmable control features and system diagnostics are provided via a serial interface under the direction of an external microcontroller. The large-scale integration and use of advanced DABiC™ (digital/analog-BiCMOS) merged technologies results in minimum power dissipation, minimum operating voltage requirements, and minimum external components. The spindle drive function incorporates a three-phase MOS power driver and a back-EMF sensing motor commutation scheme.
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