NCS5651

NCS5651 2 Amp PLC Line Driver Description The NCS5651 is a high efficiency, Class A/B, low distortion power line driver. It is optimized to accept a signal from a Power Line Carrier modem. The device consists of two Operational Amplifiers (opamps). The output opamp is designed to drive up to 2 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 V or less of either rail giving the user improved SNR. In addition to the output amplifier, a small−signal opamp is provided which can be configured as a unity gain follower buffer or can provide the first stage of a 4−pole low pass filter. The NCS5651 offers a current limit, programmable with a single resistor, RLIM, 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 150°C. The NCS5651 has a power supply voltage range of 6−12 V. It can be shut down, leaving the outputs highly−impedant. The NCS5651 comes in a 20−lead QFN package (4 × 4 × 1 mm3) with an exposed thermal pad for enhanced thermal reliability. Features Rail−to−Rail: Drop of Only ±1 V with IOUT = 1.5 A VBB Supply Voltage: 6−12 V Flexible 4th−Order Filtering Current−Limit Set with One Resistor...