ETSI Cat. 1 Receiver-Capable wM-Bus 169MHz RF Subsystem for Smart Gas and Water Meters


Design files


This reference design is a very low-power, ETSI Cat. 1 receiver capable RF subsystem for wM-Bus enabled smart gas and water meters at 169 MHz. It provides market-leading blocking, selectivity, and RX sensitivity numbers for all wM-Bus N-modes as per EN13757-4:2013 and their respective variants, which were defined in Italy and France. This cost-optimized design, without SAW filter and without TCXO, uses the RF friendly DC/DC to reduce the average power consumption while keeping the highest RF performance.

  • ETSI Cat. 1 receiver capable RF subsystem
  • Market-leading blocking, selectivity, and RX sensitivity subsystem for wM-Bus at 169 MHz
  • Fully compliant with the wM-Bus requirements for Italy and France (with an external PA device) at 169 MHz
  • Hhighly efficient, RF friendly DC/DC converter
  • No costly SAW filter and TCXO required

This circuit design is tested and includes test firmware, SRF7 Studio GUI configuration files and Getting Started guide.

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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU512.PDF (829 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components

TIDC678.ZIP (109 K)

Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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* Design guide Smart Grid wM-Bus RF Subsystem at 169 MHz Design Guide Sep. 26, 2014

Related design resources

Software development

WMBUS Wireless M-bus protocol software

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