The NCS5650 is a high efficiency, Class A/B, low distortion power line driver. Its design is optimized to accept a signal from a Power Line Carrier modem. The output stage is designed to drive up to 2 A peak into an isolation transformer or simple coil coupling to the mains. At output current of 1.5 A, the output voltage is guaranteed to swing within 1 V or less of either rail giving the user improved SNR. Power supply options are single-sided 6 V to 12 V and dual balanced $3.0 V to $6.0 V. The input stage contains an operational amplifier which can be configured as a unity gain follower buffer or used to provide the first stage of a 4-pole low pass filter. In addition the NCS5650 offers a current limit programmable with a single resistor, R-Limit, together with a current limit flag. The device provides two independent thermal flags with hysteresis: a thermal warning flag to let the user know the internal junction temperature has reached a user programmable thermal warning threshold and a thermal error flag that indicates the internal junction temperature has exceeded 150C. In shutdown mode the NCS5650 output goes into a high-impedance state. The NCS5650 comes in a 20 lead QFN package (4x4x1mm) with an exposed thermal pad for enhanced thermal reliability.