OQ8844 Overview
OQ8844 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 pact disc optical system. The main benefits of using this principle are its higher efficiency grade pared to conventional analog power amplifiers, its...
OQ8844 Key Features
- 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, pared 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