The HY6330 Laser Diode Driver is a programmable voltage controlled constant current transconductance amplifier with optical feedback. The HY6330 is used in applications that require a stable, selectable current source to drive a laser diode. The current is selectable from zero to over 170mA. Constant optical output power can be maintained using feedback from a back facet photodetector. Optical output can also be monitored using the voltage proportional output provided. The HY6330 comes in 10-pin thruhole or surface mount packages.