The HMC-AUH320 is a high dynamic range, four stage GaAs HEMT MMI C Medium Power Amplifier which operates between 71 and 86 GHz. The HMC-AUH320 provides 16 dB of gain at 74 GHz, and an output power of +15 dBm at 1 dB compression from a +4V supply voltage. All bond pads and the die backside are Ti/Au metallized and the amplifier device is fully passivated for reliable operation. The HMC-AUH320 GaAs HEMT MMI C Medium Power Amplifier is compatible with conventional die attach methods, as well as thermocompression and thermosonic wire bonding, making it ideal for MCM and hybrid microcircuit applications. All data shown herein is measured with the chip in a 50 Ohm environment and RF probes contacting the die pads.