General Description

SAC3941A is a wideband GaAs MMIC power amplifier die covering 18 to 41 GHz, K band through most of Ka. Small signal gain is 19 dB (±3 dB) and output P1dB is 21 dBm.

Drain bias is +5 V at about 180 mA with roughly -0.7 V on the gate. The 1.84 x 0.85 x 0.1 mm chip is passivated, with backside vias and gold metallization for conductive epoxy attach. One die can cover several mmWave bands in SatCom, VSAT, microwave radio and test instrumentation builds, which simplifies stocking.