8.5-10.5GHz Phase Shifter GaAs Monolithic Microwave IC in SMD leadless package. CHP3015-QDG is an X-Band (8.5-10.5GHz) monolithic 6-bit digital phase-shifter with a 0-360 degree range and high phase accuracy. The average RMS phase error is 4 degree. The circuit provides 8dB insertion loss associated with input and output return losses better than 10dB under all states. An on-chip DC-interface is compatible with both CMOS (0/+3.3V) and TTL(0/+5V) logics. The circuit is mainly dedicated to defense and space systems and is also well suited for a wide range of microwave applications. The MMIC is developed on a robust 0.25um gate length pHEMT process and is packaged in a standard surface mount 24-lead QFN4x4.