AD5700-1

Data Sheet Low Power HART Modem AD5700/AD5700-1 FEATURES GENERAL DESCRIPTION HART-compliant fully integrated FSK modem 1200 Hz and 2200 Hz sinusoidal shift frequencies 115 µA maximum supply current in receive mode Suitable for intrinsically safe applications Integrated receive band-pass filter Minimal external components required Clocking optimized for various system configurations Ultralow power crystal oscillator (60 µA maximum) External CMOS clock source Precision internal oscillator (AD5700-1only) Buffered HART output—extra drive capability 8 kV HBM ESD rating 1.71 V to 5.5 V power supply 1.71 V to 5.5 V interface −40°C to +125°C operation 4 mm × 4 mm LFCSP package HART physical layer compliant UART interface APPLICATIONS Field transmitters HART multiplexers PLC and DCS analog I/O modules HART network connectivity The AD5700/AD5700-1 are single-chip solutions, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer r...