On the development of a MODEM for data transmission and control of electrical household appliances using the low-voltage power-line

This paper presents a CMOS 0.6 μm mixed-signal MODEM ASIC for data transmission on the low-voltage power line. The circuit includes all the analog circuitry needed for input interfacing and modulation/demodulation (PLL-based frequency synthesis, slave filter banks with PLL master VCO for tuning, decision circuitry, etc.) plus the logic circuitry needed for control purposes. The circuit operates correctly in the whole industrial temperature range, from -45 to 80°C, under 5% variations of the 3.3 V supply voltage.