SZA1010

Servo functions
` 1-bit class-D focus actuator driver (4 )
` 1-bit class-D radial actuator driver (4 )
` 1-bit class-D sledge motor driver (2 ).
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
` 3-state input for radial driver
` Doubled clock frequency
` Differential outputs for all drivers
` Separate power supply pins for all drivers.

The SZA1010 or Digital Servo Driver 3 (DSD-3) consists of 1-bit class-D power drivers, which are specially designed for digital servo applications. Three such amplifiers SZA1010 are integrated in one chip, to drive the focus and radial actuators and the sledge motor of a compact disc optical system.

The main benefits of using SZA1010 are its higher efficiency grade compared to conventional analog power amplifiers, its higher integration level, its differential output and the fact that only a few external components are needed. When using these digital power drivers in a digital servo application, the statement 'complete digital servo loop' becomes more realistic.