Product description

The CMX971 is a high performance RF quadrature modulator featuring a wide operating frequency range and attractive power consumption.

Control of the CMX971 can be by serial bus or by direct control (with reduced functionality).

The small, RF-optimised VQFN package and minimal external components make the device ideal for space-constrained applications.

The CMX971’s quadrature architecture supports a wide range of modulation formats and standards. The device provides translation from baseband I/Q signals to a modulated RF signal.

The differential inputs are ideal for direct connection to standard modems and interface ICs such as CML’s CMX7163, CMX7164, CMX910, CMX981 and CMX7861.

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Devices are available through our distributors below:



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Block diagram


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  • 20 – 1000MHz RF Output
  • 0dBm Output
  • 25MHz I/Q Bandwidth
  • Serial Bus or Direct Control Operation
  • Low Power 61mA @ 3.3V
  • Small 16-lead VQFN Package


  • Wireless Data Terminals
  • HF/VHF and UHF Mobile Radio
  • Avionics Radio Systems
  • Software Defined Radio (SDR)

Power supply requirement

  • 3.0 to 3.6 V

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Design resources

EV9710 Evaluation Kit

EV9710 EV9710 The EV9710 is an Evaluation Kit designed for evaluating and demonstrating the capabilities of the CMX971 RF Quadrature Modulator. EV9710_Product_Preview




C-BUS Guides

Guides to operation and interfacing

EV9710 Board Schematics

EV9710 high resolution schematics. Version A02

EV9710 Evaluation Software

EV9710 Evaluation Software. Requires a PE0003 Universal Interface Card. Version 3.1

EV9710 Quick Start

A simple guide to help users get started evaluating the EV9710. Version 1

PE0003 Driver

PE0003 USB driver for Windows. Version 1.0

Package: Q7

16-pin VQFN

VQFN Design Guidance Notes

VQFN Design Guidance Notes

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