Features and Benefits

  • Attenuation range: 0.25 dB LSB steps to 31.75 dB
  • Low insertion loss:
    • 1.1 dB at 1.0 GHz
    • 1.3 dB at 2.0 GHz
  • Typical step error: less than ±0.1 dB
  • Excellent attenuation accuracy: less than ±0.2 dB
  • Low phase shift error: 6° phase shift at 1.0 GHz
  • Safe state transitions
  • High linearity
    • 1 dB compression (P1dB): 31 dBm typical
    • Input third-order intercept (IP3): 54 dBm typical
  • RF settling time (0.05 dB final RF output): 250 ns
  • Single supply operation: 3.3 V to 5.0 V
  • ESD rating: Class 2 (2 kV human body model (HBM))
  • 24-lead, 4 mm × 4 mm LFCSP package: 16 mm2

Product Details

The HMC1119 is a broadband, highly accurate, 7-bit digital attenuator, operating from 0.1 GHz to 6.0 GHz with 31.5 dB attenuation control range in 0.25 dB steps.

The HMC1119 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 is optimized for excellent step accuracy and high linearity over frequency and temperature range. The RF input and output are internally matched to 50 Ω and do not require any external matching components. The design is bidirectional; therefore, the RF input and output are interchangeable.

The HMC1119 has an on-chip regulator that can support a wide supply operating range from 3.3 V to 5.0 V with no performance change in electrical characteristics. The HMC1119 incorporates a driver that supports serial (3-wire) and parallel controls of the attenuator.

The HMC1119 comes in a RoHS-compliant, compact, 4 mm × 4 mm LFCSP package.

A fully populated evaluation board is available.


  • Cellular infrastructure
  • Microwave radios and very small aperture terminals (VSATs)
  • Test equipment and sensors
  • IF and RF designs

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Tools & Simulations

IBIS Models


Design Tools


ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.