SLAS986D November 2014 – February 2018 AMC7836
The AMC7836 device contains one local temperature and five unipolar analog inputs that are easily configurable to interface with remote temperature-sensor circuits. The integrated temperature sensor and analog input registers automatically update with every conversion. Figure 116 shows an example of a remote temperature sensor connection.
The selected temperature sensor is the LM50 device, a high precision integrated-circuit temperature sensor that operates in the –40°C to 125°C temperature range using a single positive supply. The full-scale output of the temperature sensor ranges from 100 mV to 1.75 V for the operational temperature range. In an extremely noisy environment, additional filtering is recommended. A typical value for the bypass capacitor is 0.1 µF from the V+ pin to GND. A high-quality ceramic type NP0 or X7R is recommended because of optimal performance across temperature and very low dissipation factor.