Power line comms driver

29 September 2010 Analogue, Mixed Signal, LSI

ON Semiconductor’s new NCS5650 is a line driver device targeted at power line carrier (PLC) communications applications such as smart metering, industrial control and street lighting. It is a Class AB, low distortion driver specifically designed to drive power line mains and capable of accepting a signal from any power line carrier modem.

The NCS5650 contains an operational amplifier which can be configured as a unity gain follower buffer, or alternatively used to provide the first stage of a 4-pole low-pass filter. The output stage has the capacity to drive up to 2,0 A peak into an isolation transformer or simple coil coupling to the mains. At an output current of 1,5 A, the output voltage is guaranteed to swing within 1,0 V or less on either rail, ensuring optimal signal-to-noise ratio (SNR) in harsh environments. The device draws just 150 μA while in shutdown mode. Power supply options are single-sided 6 V to 12 V and dual balanced ±3,0 V to ±6,0 V.

With its unique full power bandwidth, the NCS5650 can operate in any region of the world while complying with local PLC frequency band regulations like CENELEC. The devices have an extended junction temperature range of -40°C to +125°C. They are offered in a compact QFN package with an exposed thermal pad for enhanced heat dissipation and increased thermal reliability.

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