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Field transmitter reference design supporting BLE connectivity, powered by 4mA to 20mA current loop

TIDA-00666

Overview

TI reference design TIDA-00666 supports Bluetooth Low Energy (BLE) communications and is powered by a two-wire loop capable of 4-20mA. For industrial process control instrumentation, 4mA to 20mA analog current loops are typically used to transmit analog signals. 20mA and 4mA represent the upper and lower limits of the signal range respectively. The TIDA-00666 reference design measures humidity and temperature and broadcasts the measured values via Bluetooth Low Energy technology. The TIDA-00666 design uses loop power supply, and the current value in the loop changes with the humidity value (0% is 4mA, 100% is 20mA).

characteristic

● 4-20mA loop-powered Bluetooth low energy communication
● 4-20mA circuit loop output signal
● 8V to 33V input voltage range
● 16-bit loop current resolution
●Onboard humidity and temperature sensors

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Blockdiagram

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Update:2025-06-24 02:34:58

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