View mn662745rpc datasheet:

For Audio Equipment MN662745RPC Signal Processing LSI for CD Players Overview The MN662745RPC is a CD signal processing LSI that, (Spindle motor servo) on a single chip, combines an optics servo for the CD CLV digital servo player (focus, tracking, and traverse servos), digital signal processing (EFM demodulation and error correction), (Audio circuits) digital servo processing for the spindle motor, digital Digital filter using 8-fold oversampling filter, and D/A converter, so thus covers all signal Built-in D/A converter (1-bit D/A converter) processing functions from the head's RF amplifier onward. Built-in differential operational amplifier (2nd order low pass filter) Features (Optics servo) (Other) Focus, tracking, and traverse servos Built-in playback pitch con