General Description
The G569C is a single chip solution for the various functions relating to laser diode operation in a CD-RW drive. The G569C integrates nine functional blocks in one chip. It has five voltage-to-current converters, one current-to-voltage converters which is called FSA, one OP-AMP, one eight-channels D/A converter, and one voltage subtracter with output clamping capability called Dalpha.

Features
■ Single +5V supply
■ Laser diode read current driver
■ Laser diode write current driver
■ Laser diode Erase current driver
■ Deltap circuit to control write current
■ FSA circuit to integrate photo diode current
■ Cagain circuit to convert Vcagain into current
■ Dalpha circuit to perform voltage subtraction and limiting
■ 3-wire interface to control internal DAC
■ A build-in OP-AMP
■ 48-pin SSOP package

Applications
■ CD-RW Drive