Description

Alpha’s AV850M1-00 MMIC voltage variable attenuator is a balanced configuration incorporating Lange couplers at input and output.The attenuator has a typical insertion loss of 2.5 dB over the 18–40 GHz band with a worst-case insertion loss of 3.5 dB across the full 18–50 GHz band. The attenuation range is 35 dB over the full 18–50 GHz band while typical I/P and O/P return loss is better than 13 dB for all attenuation states. The chip uses Alpha’s proven 0.25 µm MESFET technology and is based upon MBE layers and electron beam lithography for the highest uniformity and repeatability. The MMICs employ surface passivation to ensure a rugged, reliable part with through-substrate via holes and gold-based backside metallization to facilitate a conductive epoxy die attach process. All chips are screened for insertion loss, full attenuation and I/P and O/P match over the 18–50 GHz band for guaranteed performance.

Features

■ Single Voltage Control

■ 40 dB Attenuation Range

■ Balanced 0.25 µm MESFET Non-Reflective Design

■ 100 On-Wafer RF and DC Testing

■ 100 Visual Inspection to MIL-STD-883 MT 2010