深圳市华兴微电子有限公司 （非本站正式会员）

Features

• Single Positive Voltage Supply 
   (5V to 16.5V)
• Adjustable Drain Voltage 3V to 15V
• Adjustable Drain Current up to 500mA
• Active Bias Current Regulation
• Stable Bias Current Over Temperature &
    Process Variation and Aging
• Automated Power-up Sequencing
• 32 Lead 5x5mm SMT Package: 25mm2

Typical Applications

• Cellular Base Station
• Wireless Infrastructure 
   Equipment
• Microwave Radio & VSAT
• Military & Space
• Test Instrumentation

Functional Diagram

Bias Settings

General Description

HMC920LP5E is an active bias controller which generates a regulated Drain voltage and actively 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 (VDRAIN) from 3V to 15V and drain currents (IDRAIN) up to 500mA, offering a complete biasing solution.

The HMC920LP5E achieves excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures used to prevent RF performance degradation due to such variations.

The HMC920LP5E is housed in an RoHS compliant 5x5 mm QFN leadless package with an exposed backside pad to improve thermal characteristics.