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Figure 2 shows a simulation of the circuit’s output from 0°C to 50°C. If you use a passive bridge that produces a nonlinear resistance, then you still need linearizing circuits prior to digitizing the ...
Each device provides the functionality for analog output, analog input, digital input, and resistance temperature detector (RTD) measurements integrated into a single chip with an SPI-compatible ...
This circuit applies heating power for about 90% of the time and measures the RTD thermoelectric potential during the approximately 10% of off-time (Fig. 1). Two switches are required.