Hi ABHAY VASHISTHA, See below for a possible implementation for 16x 3-wire RTDs using a low-side reference resistor and 2x IDACs. Basically you just need several multiplexers. Let me know if you have any additional questions We offer some great collateral for RTD measurements using our ADCs to help you with a potential design: A Basic Guide to RTD Measurements (the image above is taken from this document) RTD Wire-Break Detection Using Precision Delta-Sigma ADCs Firmware library for RTD measurements (including RTD linearization algorithms): https://www.ti.com/tool/ADC-TEMP-SENSOR-FW Technical training about RTD measurements with Precision ADCs: https://www.ti.com/video/series/precision-labs/ti-precision-labs-analog-to-digital-converters-adcs.html?videoId=6330516233112 -Bryan
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