General Description

The HMC291 & HMC291E are general purpose broadband 2-bit positive control GaAs IC digital attenuators in 6 lead SOT26 surface mount plastic packages. Covering 0.7 to 4 GHz, the insertion loss is typically less than 0.7 to 1.3 dB. The attenuator bit values are 4 (LSB) and 8 dB for a total attenuation of 12 dB. Accuracy is excellent at ± 0.2 dB typical with an IIP3 of up to +54 dBm. Two bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state at less than 50 uA each. A single Vdd bias of +3 to +5 volts applied through an external 5K Ohm resistor is required

Features

RoHS Compliant Product

4 dB LSB Steps to 12 dB

Single Positive Control Per BIT, 0/+3V

+/-0.2 dB Typical Bit Error

Miniature SOT 26 Package: 9 mm2

Included in the HMC-DK004 Designer’s Kit

Typical Applications

The HMC291 & HMC291E are ideal for:

• Cellular

• PCS, ISM, MMDS

• WLL Handset & Base Station