ADN8831 Thermoelectric Cooler (TEC) Controller Analog Devices ADN8831 Thermoelectric Cooler (TEC) Controller is a monolithic TEC controller with two integrated, zero drift, rail-to-rail comparators, and a unique PWM driver. This highly integrated device controls the TEC in a laser module used in optical communications systems. The PWM driver works with an analog driver to control external selected MOSFETs in an H-bridge. By sensing the thermal detector feedback from the TEC, ADN8831 can drive a TEC to settle the programmable temperature of a laser diode or a passive component attached to the TEC module. ADN8831 provides greater than 90% efficiency and lower than 1% ripple noise together to complete a TEC control function. Additionally, ADN8831 features system-supervising functions such as real temp monitoring, temp lock indication, current limit, switching frequency and phase changeability. ADN8831's wave lock input allows optical equipment designers to build a dual TEC control loop by using both thermistor and wavelockers. With a 5mm x 5mm tiny chip-scale package, optical equipment designers can save valuable board space in TEC temperature control, DWDM optical transceiver modules, optical fiber amplifiers, optical networking systems, and instruments requiring TEC temperature control.Learn More