M-Bus slave transceiver

23 October 2013 Telecoms, Datacoms, Wireless, IoT

ON Semiconductor has introduced a new integrated slave transceiver for use in two-wire Meter Bus (M-Bus) slave devices and repeaters. The NCN5150 provides all necessary functionality to satisfy the EN 13757-2 and EN 1434-3 standards that describe the physical layer requirements for remote meter reading M-Bus applications in multi-energy, heating and cooling, water and gas meters.

The chip achieves UART communication speeds of up to 38 400 baud and includes a programmable power level of up to two (SOIC-packaged version) or six (QFN-packaged version) unit loads which are available for use in external circuits through an integrated 3,3 V low drop-out (LDO) regulator. Low internal power consumption makes extra power available for the sensor in the application, while low-voltage bus operation (down to 9,2 V) allows operation on extended M-Bus networks.

The NCN5150 is available in a choice of SOIC-16 and QFN-20 packages; the SOIC-16 offers pin-to-pin compatibility with existing devices currently on the market, plus a number of performance improvements. The dimensions of the QFN package make it ideal for use in the growing number of space constrained applications.

Designed using ON Semiconductor’s latest mixed-signal technology, the NCN5150 is robust and has a wide operating temperature range of -40°C to +85°C, making it suitable for use in the varied and often unpredictable operating environments typical in this market sector. Other key features of the polarity independent devices include a power fail function, fast startup, and the ability to support the powering of a slave device from either the bus or an external power supply.

For more information contact Arnold Perumal, Avnet Kopp, +27 (0)11 319 8600, [email protected], www.avnet.co.za

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