The AD5700/AD5700-1 is a low power HART modem that is fully compliant with the HART standard. It features a complete FSK modulator/demodulator that supports 1200 Hz and 2200 Hz sinusoidal shift frequencies.
The AD5700 and AD5700‑1 are single‑chip, low‑power HART‑compliant FSK modems designed for intrinsically safe, loop‑powered applications. They integrate filtering, modulation, demodulation and a UART interface, requiring minimal external components. The AD5700‑1 adds a precision internal oscillator for further board‑space reduction.
The document provides detailed specifications, timing characteristics, absolute maximum ratings, pin configuration, and ordering guide for the 4 mm × 4 mm LFCSP package, along with typical connection diagrams and thermal information.