The HMC629LP4(E) is a broadband 4-bit GaAs IC Digital Attenuator in a low cost leadless SMT package. This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 4-bit parallel word. For applications which require only 33 dB of attenuation range, the HMC629LP4(E) provides excellent attenuation accuracy up to 10 GHz. The HMC629LP4(E) is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components. Applications * Cellular/3G Infrastructure * WiBro/WiMAX/4G * Microwave Radio & VSAT * Test Equipment and Sensors * IF & RF Applications * 3 dB LSB Steps to 45 dB * Power-Up State Selection * Low Insertion Loss: 2.5 dB * TTL/CMOS Compatible, Serial, Parallel or Latched Parallel Control