The HART protocol superimposes audio digital signals on 4~20 mA analog signals. The digital signal amplitude is 0.5 mA and the data rate reaches 1200 b/s. 1200 Hz represents logic "1" and 2200 Hz represents logic "0". Enables two-way digital communication. HART communication has the characteristics of simultaneous point-to-point 4 ~ 20 mA analog and digital communication, multi-station communication methods, and multiple transmissions.The HT1200M is compatible with the SYM20C15 and HT20C15 and with ON OnSemi's A5191HRT and HT2015.

The HT1200M HART Fieldbus Modem is compatible with the SYM20C15 and HT20C15 and with ON OnSemi's A5191HRT and HT2015.

HT1200M is a low-power modem chip that can be used in HART devices, which only needs a small number of external components to complete the modulation and demodulation of HART signals.

HT1200M is a low-power modem chip that can be used in HART devices, which only needs a small number of external components to complete the modulation and demodulation of HART signals.