ACPL-C797 Datasheet | Avago Technologies

Description The ACPL-C797 is a 1-bit, second-order sigma-delta (Σ-∆) modulator converts an analog input signal into a highspeed data stream with galvanic isolation based on optical coupling technology. The ACPL-C797 operates from a 5 V power supply with dynamic range of 80 d B with an appropriate digital filter. The differential inputs of ±200 m V (full scale ±320 m V) are ideal for direct connection to shunt resistors or other low-level signal sources in applications such as motor phase current measurement. The analog input is continuously sampled by a means of sigma-delta over-sampling using an on-board clock. The signal information is contained in the modulator data, as a density of ones with data rate of 10 MHz, and the data are encoded and transmitted across the isolation boundary where they are recovered and decoded into high-speed data stream of digital ones and zeros. The original signal information can be...