General Description

The HMC543LC4B is a 4-bit digital phase shifter which is rated from 8 to 12 GHz, providing 0 to 360 degrees of phase coverage, with a LSB of 22.5 degrees. The HMC543LC4B features very low RMS phase error of 5 degrees and extremely low insertion loss variation of ±0.8 dB across all phase states. This high accuracy phase shifter is controlled with complementary logic of 0/-3V, and requires no fi xed bias voltage. The HMC543LC4B is housed in a compact 4x4 mm ceramic leadless SMT package and is internally matched to 50 Ohms with no external components. Simple external level shifting circuitry can be used to convert a positive CMOS control voltage into complementary negative control signals.

Features

Low RMS Phase Error: 5°

Low Insertion Loss: 6.5 dB

Excellent Flatness

360° Coverage, LSB = 22.5°

24 Lead Ceramic SMT Package: 16mm2

Typical Applications

The HMC543LC4B is ideal for:

• EW Receivers

• Weather & Military Radar

• Satellite Communications

• Beamforming Modules