HMC981 Datasheet (Hittite Microwave Corporation)

HMC981, ACTIVE BIAS CONTROLLER

HMC981 is an active bias controller that automatically adjusts the gate voltage of an external amplifier to achieve constant bias current.

It can be used to bias any enhancement and depletion type amplifiers operating in Class-A regime with Drain voltages from 4V to 12V and drain currents up to 200m

HMC981 Features

* Automatic Gate voltage adjustment (No Calibration required) Supply Voltage: 4V to 12V Digital Voltage: 3.3V to 5V Controls both Enhancement and Depletion type devices Adjustable Drain Current up to 200mA Sink/Source Gate Current Capability Optional Internal negative voltage generation that can be di