SLASF77A December 2022 – September 2023 AFE11612-SEP
PRODUCTION DATA
Figure 7-6(a) and Figure 7-6(b) show the connection of recommended NPN or PNP transistors, respectively. Remote junction temperature sensors are usually implemented in a noisy environment. Noise is most often created by fast digital signals, and can corrupt measurements. The device has a built-in 65-kHz filter on the D+ and D– inputs to minimize the effects of noise. However, a bypass capacitor placed differentially across the inputs of the remote temperature sensor can make the application more robust against unwanted coupled signals. If filtering is required, limit the capacitance between D+ and D– to 330 pF or less for good measurement performance. This capacitance includes any cable capacitance between the remote temperature sensor and the device.