GENERAL 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 sledge driver
• Differential outputs for all drivers
• Separate power supply pins for all drivers.