Digitally Calibrated Bridge Sensor Signal Conditioner with 4mA to 20mA Current Loop Output

Digitally calibrated bridge sensor signal conditioner with 4mA to 20mA current loop output. This bridge sensor conditioner module delivers a well regulated current output to a ground-referenced load. The first stage uses a mixed-signal programmable gain amplifier (PGA) to provide linearization and temperature compensation to a differential bridge sensor voltage. The second stage converts the PGA output voltage into current and transmits the current over a standard 4 mA to 20 mA current loop