Low Cost Loop-Powered 4-20mA Transmitter EMC/EMI Tested Reference Design
TIPD158
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Low-Cost Loop-Powered 4-mA to 20-mA Transmitter EMC/EMI Tested Design Guide
(PDF 2625 KB)
23 Apr 2014
-
TIPD158 Design File (Rev. A)
(ZIP 2604 KB)
24 Aug 2018
Description
This CerTIfied Reference Design is a low cost system that implements a 12-bit loop-powered, or 2-wire, transmitter using the DAC7311, OPA317, and TL431B. The design includes a protection circuit that provides immunity to the IEC61000-4 test suite. The design also includes a circuit to rectify a reverse polarity supply voltage. The protection circuit and rectifier do not negatively affect the current output performance, resulting in <0.2% total unadjusted error (TUE).
This design is well suited for industrial automation and process conrol applications requiring a low-cost solution for 2-wire data transmission.
Features
- 12-bit, loop-powered 4-20mA, transmitter
- 10-36 V Loop Supply Voltage
- <0.2% total unadjusted error (TUE)
- <0.04% calibrated error
- Low Cost Design
- Verified to pass IEC61000-4-2/3/4/6 tests
- Functional with reverse polarity supply connection
See the Important Notice and Disclaimer covering reference designs and other TI resources.
