HMC291S

4 dB LSB Silicon 2-Bit Positive Control Digital Attenuator, 0.7 - 4.0 GHz

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Overview

RoHS compliant product
4 dB LSB steps to 12 dB
Single positive control per bit, 0/+3V or +5V

Typical step error : ±0.3 dB
Miniature SOT 26 package: 9 mm²

The HMC291SE is a general purpose broadband 2-bit positive control silicon IC digital attenuator in 6 lead SOT26 surface mount plastic package. The insertion loss is typically in between 0.4 dB - 1 dB through operating frequency range. The attenuator bit values are 4 (LSB) and 8 dB for a total attenuation of 12 dB. State error is excellent at ± 0.4 dB typical with an IIP3 of up to 57 dBm. Two bit control voltage inputs, toggled between 0V and +3V or +5V, are used to select each attenuation state at less than 25 µA each. A single VDD supply voltage of +3V to +5V applied through an external 4.7K Ohm resistor is required.

Applications

Cellular
PCS, ISM, MMDS
WLL handset & base station

Documentation

Data Sheet 1

HMC291SE: 4 dB LSB Slilcon 2-Bit Positive Control Digital Attenuator, 0.7 - 4.0 GHz Preliminary Data Sheet 10/01/2015

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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