Analogue, Mixed Signal, LSI


Class A active bias controllers

14 September 2011 Analogue, Mixed Signal, LSI

Hittite has introduced three new monolithic Class A amplifier biasing and monitoring solutions. The HMC980LP4E, HMC981 and HMC981LP3E are designed for power management and control in cellular infrastructure, microwave and millimetrewave communications, fibre-optic, consumer, military, space and test equipment applications. They automatically adjust the gate voltage to achieve a constant bias current over part-to-part and temperature variations. The HMC980LP4E targets amplifiers operating with bias currents up to 1,6 A and supply voltages from 5 V to 16,5 V. The HMC981LP3E (available in die format as the HMC981) is a highly compact biasing solution that requires only eight standard external passive components.



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