Document
Attenuators - Digital - SMT
v08.0112
Typical Applications
The HMC629LP4(E) is ideal for: • Cellular/3G Infrastructure • WiBro / WiMAX / 4G • Microwave Radio & VSAT • Test Equipment and Sensors • IF & RF Applications
Functional Diagram
HMC629LP4 / 629LP4E
3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz
Features
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 ±0.25 dB Typical Step Error Single +3V or +5V Supply 24 Lead 4x4mm SMT Package: 16mm2
General Description
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 r.