RF building block integrates up and down conversion mixers

24th January 2018
Posted By : Anna Flockett
RF building block integrates up and down conversion mixers

The release of the CMX975 - 2.7GHz Up/Down Converter has been announced by CML Microcircuits as it expands its RF Building Block IC range. The CMX975 is an enabler for small form factor high frequency RF transceiver designs, operating up to 2.7GHz, that require high performance and low power consumption; in a small form factor.

The device integrates up and down conversion mixers and associated frequency generation circuitry, therefore minimising the number of external components required to configure a complete system. 

The device features programmable operation, allowing the designer to fully optimise the system design. Both receive and transmit mixers can be selected to operate as a double balanced mixer stage or as image cancelling mixers, intended to ease external filtering requirements and to lower overall system cost.

A flexible switching arrangement allows internal or externally sourced local oscillator signals and the main RF mixers to be driven from an external or integrated VCO. The integrated Fractional-N PLL allows fine frequency resolution and fast frequency lock. An integer-N PLL and VCO is also integrated to provide an IF local oscillator for superhet architecture operation.

The CMX975 has programmable power management functionality, controlled via a SPI compatible serial bus, operates from a single 2.7-3.6V power supply and is available in a small outline VQFN package.

The device is suited to applications in mobile satellite services (MSS), military communications, aircraft surveillance systems, high performance ISM radio applications and general purpose RF/IF communication systems.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris