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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

Product Details
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 200mA, offering a complete biasing solution.
HMC981 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.
All data shown herein is taken with appropriate probes.
Applications
Microwave Radio & VSAT
Military & Space
Test Instrumentation
Fiber Optic Modulator Driver Biasing
CATV Laser Driver Biasing
### Features and Benefits
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 disabled to use external negative rail
Fast Enable/Disable
Trigger-out Output for Daisy Chain Power-Up and Power-Down Sequencing

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HMC981 Specifications

TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- Carefully inspected and packed by ManyChip warehouse
- Vacuum packaging
- Anti-static packaging
- Shockproof foam
The terms here are for reference only, the actual terms are subject to the sales quotation.
- Please confirm product specifications when ordering.
- MOQ refers to the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the ordering page.
- Inspection (PSI) will be performed prior to shipment.
- Income Quality Control (IQC), 1000+ qualified dealers.
- Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray control
- XRF inspection
- Electrical testing
- Surface testing
-Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity

If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.

SN:H1.01873LO11066V33Q0QC0S0

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