ACTIVE BIAS CONTROLLER
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HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER HIGH CURRENT
Features
• Automatic Gate voltage adjustm...
Description
www.DataSheet.co.kr
HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER HIGH CURRENT
Features
Automatic Gate voltage adjustment (No Calibration required) Supply Voltage (5V to 16.5V) Bias both Enhancement or Depletion type devices Adjustable Drain Current up to 1.6 A Sink or source gate current Internal negative voltage generation Can be disabled to use external negative rail Fast Enable/Disable Trigger-out Output for Daisy Chain Power-Up and Power-Down Sequencing Over/Under Current Alarm with built-in hystresis 24 Lead 4mmx4mm QFN Package: 16mm2
Typical Applications
Microwave Radio & VSAT Military & Space Test Instrumentation Fiber Optic Modulator Driver Biasing CATV Laser Driver Biasing Cellular Base Station Wireless Infrastructure Equipment
13
BIAS CONTROLLERS - SMT
Functional Diagram
General Description
HMC980LP4E is an active bias controller that can automatically adjust the gate voltage of an external amplifier to achieve constant bias current. With an integrated controller, HMC980LP4E achieves safe power on/off, disable/enable and automatic supply sequencing ensuring the safety of the external amplifier. It can be used to bias any enhancement and depletion type amplifier operating in Class-A regime with drain voltages (VDRAIN) from 5V to 16.5V and drain currents (IDRAIN) up to 1.6 A, offering a complete biasing solution. HMC980LP4E achieves excellent bias stability over supply, temperature and process variations, an...
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