HMC681A

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0.5 dB LSB GaAs MMIC 6-BIT Digital Variable Gain Amplifier with Serial Control, DC - 1 GHz

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Overview

+13.5 dB to +45 dB Gain Control in 0.5 dB Steps
High Output IP3: +36 dBm
0.25 dB Typical Gain Step Error
Single +5V Supply
32 Lead 5x5mm SMT Package: 25mm²

The HMC681ALP5E is a digitally controlled variable gain amplifier which operates from DC to 1 GHz, and can be programmed to provide anywhere from 13.5 dB, to 45 dB of gain, in 0.5 dB steps. The HMC681ALP5E delivers noise figure of 2.8 dB in its maximum gain state, with output IP3 of up to +36 dBm in any state. This serially controlled digital VGA incorporates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The HMC681ALP5E is housed in a RoHS compliant 5x5 mm QFN leadless package, and provides the user with a highly integrated solution. This functionality is also available with parallel control as the HMC626ALP5E.

Applications

IF & RF Applications
Cellular/3G Infrastructure
WiBro / WiMAX / 4G
Microwave Radio & VSAT
Test Equipment and Sensors

Documentation

Data Sheet 1

HMC681A Data Sheet 04/22/2015

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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