Product description

The CMX970 is a low power IF/RF quadrature demodulator, featuring a wide operating frequency range and low power consumption. Suitable for architectures with IF or RF frequencies up to 300MHz, the device may be used in low IF systems or those converting down to baseband.

Control of the CMX970 may be either 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. Programmable features include the local oscillator divider ratio (2 or 4).

The demodulator has best in class intermodulation performance, excellent phase and amplitude balance and has two gain control elements which can be independently controlled.

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Devices are available through our distributors below:


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Block diagram


Technical Portal

No additional information available.


  • 20 – 300 MHz IF/RF Demodulator with VGA
  • 10MHz I/Q Bandwidth
  • Serial Bus or Direct Control Operation
  • < 1 degree I/Q Phase Matching
  • < 0.5 dB I/Q Gain Matching
  • Low Power 15mA @ 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 power supply

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Design resources

EV9700 Evaluation Kit

EV9700 EV9700 The EV9700 is an Evaluation Kit designed for evaluating and demonstrating the capabilities of the CMX970 IF/RF Qaudrature Demodulator IC. All the circuits necessary to demonstrate the facilities provided by the IC, such as matching circuits, power supply regulators, etc are provided on the EV9700 board. EV9700_Product_Preview

EV9700 User Manual



C-BUS Guides

Guides to operation and interfacing

Package: Q7

16-pin VQFN

VQFN Design Guidance Notes

VQFN Design Guidance Notes

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