To learn more about connecting temperature sensors to an ADC and about ADC architecture, download a copy of “ADC Requirements for Temperature Measurement Systems,” by Mary McCarthy and Eamonn Dillon ...

The diode’s other purpose is to provide, in combination with C1, a regulated output that can supply power to the microcontroller. The circuit’s current capacity is limited to 7.5 mA, but this ...

Figure 3. A voltage signal produced by a Pt100 RTD in response to increasing temperature. The AFE amplifies and conditions the low amplitude RTD signal before the analog-to-digital converter (ADC) ...

Figure 8 This diagram shows a complete working ΔΣ ADC with pressure sensor and temperature sensor inputs. Source: Maxim Integrated. In the core ΔΣ ADC block diagram (Figure 4), there is a ...

1. This circuit, based on a PIC microcontroller with a few added components, converts a sensor-based voltage into a 4- to 20-mA current loop. Shown is the circuit as originally drawn on a whiteboard.