HMC1122

Data Sheet 0.1 GHz to 6.0 GHz, 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator HMC1122 GND D0 GND D1 GND D2 GND D3 GND D4 GND D5 13719-001 FEATURES Attenuation range: 0.5 dB LSB steps to 31.5 dB Low insertion loss 1.1 dB at 1 GHz 1.3 dB at 2 GHz Typical step error: less than ±0.1 dB Excellent attenuation accuracy Safe state transitions High linearity Input 0.1dB compression (P0.1dB): 30 dBm typical Input third-order intercept (IP3): 55 dBm typical RF settling time (0.05 dB final RF output): 250 ns Low phase shift error: 6° at 1 GHz Single supply operation: 3.3 V to 5 V ESD rating: Class 2 (2 kV HBM) 24-lead, 4 mm × 4 mm LFCSP package: 16 mm2 Pin compatible to the HMC624A APPLICATIONS Cellular infrastructure Microwave radios and very small aperture terminals (VSATs) Test equipment and sensors IF and RF designs FUNCTIONAL BLOCK DIAGRAM 24 23 22 21 20 19 P/S 1 18 VDD CLK 2 SERIN 3 SERIAL/ PARALLEL INTERFACE 17 PUP1 16 PUP2 LE 4 GND 5 ATTIN 6 7 6-BIT/ DIGITAL ATTENUATOR 15 SEROUT 14 GND 13 ATTOUT 8 9 10 11 12 PACKAGE BASE GND Figure 1. GENERAL DESCRIPTION The HMC1122 is a 6-bit digital attenuator operating from 0.1 GHz to 6 GHz with a 31.5 dB attenuation control range in 0.5 dB steps. The HMC1122 is implemented in a silicon process, offering very fast settling time, low power consumption, and high ESD robustness. The device features safe state transitions and optimized for excellent step accuracy and high linearity over frequency and temperature range. The RF inpu...