Description

TIDA-00666 enables Bluetooth Low Energy communication powered from a 2-wire 4- to 20-mA loop. For industrial process control instruments: analog 4- to 20-mA current loops are commonly used for analog signaling: with 4 mA representing the lowest end of the range and 20 mA the highest. This reference design measures humidity and temperature and is broadcasting the measured values with Bluetooth Low Energy. TIDA-00666 is loop powered and the current value on the loop is changed according to the humidity value (0% is 4 mA and 100% is 20 mA).