MMIC Digital Attenuator

The ADH424S is a broadband 6-bit GaAs IC digital attenuator supplied in die form with Class K element evaluation. Covering DC to 13 GHz, the insertion loss is less then 4 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ± 0.5 dB typical step error with an IIP3 of +38 dBm. Six control voltage inputs, toggled between 0 and -5V, are used to select each attenuation state. A single Vee bias of -5V allows operation at frequencies down to DC.

APPLICATIONS

* Military & Space

* Transceivers

* Test Equipment & Sensors

* 0.5 dB LSB Steps to 31.5 dB

* Single Control Line Per Bit

* ±0.5 dB Typical Bit Error