HMC291

Features:

·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


Application

The HMC291 is ideal for:
• Cellular
• PCS, ISM, MMDS
• WLL Handset & Base Station


Pinout




Specifications

Control Voltage (V1,V2)	Vdd +0.5 Vdc
Bias Voltage (Vdd)	+8.0 Vdc
Storage Temperature	-65 to +150
Operating Temperature	-40 to +85
RF Input Power(0.7 - 4 GHz)	+28 dBm

Description

The HMC291 is a broadband 2 - bit positive control GaAs IC digital attenuator in a 6 lead SOT26 surface mount plastic package. Covering 0.7 to 4 GHz, the insertion loss is typically less than 0.7 to 1.3 dB. The HMC291 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.