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OQ8844 - Digital Servo Driver DSD-2

Description

The OQ8844 or Digital Servo Driver 2 (DSD2) consists of 1-bit class-D power drivers, which are specially designed for digital servo applications.

Three such amplifiers are integrated in one chip, to drive the focus and radial actuators and the sledge motor of a compact disc optical system.

Features

  • Servo functions.
  • 1-bit class-D focus actuator driver (3.3 Ω).
  • 1-bit class-D radial actuator driver (3.7 Ω).
  • 1-bit class-D sledge motor driver (2.5 Ω). Other features.
  • Supply voltage 5 V only.
  • Small package (SOT163-1).
  • Higher efficiency, compared with conventional drivers, due to the class-D principle.
  • Built-in digital notch filters for higher efficiency.
  • Enable input for focus and radial driver.
  • Enable input for sle.

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Full PDF Text Transcription

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INTEGRATED CIRCUITS DATA SHEET OQ8844 Digital Servo Driver (DSD-2) Product specification File under Integrated Circuits, IC01 1995 Nov 27 Philips Semiconductors Product specification Digital Servo Driver (DSD-2) FEATURES Servo functions • 1-bit class-D focus actuator driver (3.3 Ω) • 1-bit class-D radial actuator driver (3.7 Ω) • 1-bit class-D sledge motor driver (2.5 Ω). Other features • Supply voltage 5 V only • Small package (SOT163-1) • Higher efficiency, compared with conventional drivers, due to the class-D principle • Built-in digital notch filters for higher efficiency • Enable input for focus and radial driver • Enable input for sledge driver • Differential outputs for all drivers • Separate power supply pins for all drivers.
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