The WJA1021 consists of Darlington pair amplifier using a high reliability InGaP/GaAs HBT process technology. The amplifier has been optimized internally to offer very high linearity performance at 1.9 GHz while drawing very low current. The MMIC amplifier is internally matched to 50 and only requires DC-blocking capacitors and a bias inductor for operation. An internal active bias is designed to enable stable performance over temperature and allow for operation directly from a +5V supply voltage.