Highly-Accurate: Loop-Powered: 4mA to 20mA Field Transmitter With HART® Modem Reference Design
1 января 2018
This reference design provides a solution for a loop-powered, highly-accurate, field (sensor) transmitter with a HART® modem. The design uses a partially-discrete 4-mA to 20-mA current transmitter, HART modem, microcontroller, and power conditioning blocks in realizing asmart field transmitter design. The design is compliant with the HART FSKPhysical LayerSpecification and has been registered with FieldComm Group™.
Loop-powered, 4-mA to 20-mA current transmitter with DAC8740H HART modem and onboard power conditioning blocks Less than 0.1% FSR total unadjusted error at room temperature External protection circuitry with reverse polarity protection Compliant with HART FSK Physical LayerSpecification and registered HART device