HMC981LP3ETR

HMC981LP3E is a 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 upto 200mA, offering a complete biasing solution. This achieves excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures usually employed to prevent RF performance degradation due to such variations. It is used in application such as microwave radio & VSAT, military & space, test instrumentation, fibre optic modulator driver biasing, CATV laser driver biasing, cellular base station, wireless infrastructure equipment etc.

• Automatic gate voltage adjustment (no calibration required)
• Digital voltage range is 3.3V to 5V
• Controls both enhancement and depletion type devices
• Adjustable drain current upto 200mA
• Sink/source gate current capability
• Fast enable/disable
• Trigger-out output for daisy chain power-up and power-down sequencing
• Oscillator frequency is 300KHz typ at (TA = +25°C, VDD=8V, VDIG= 3.3V)
• Operating temperature is -40°C to +85°C
• Package style is 16-pin QFN-EP

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