Other Parts Discussed in Thread: LMT86, TIDA-00774, TIDA-00901, TIDA-00281,
I am wondering how R and C were selected for the temperature sensor LMT86/87 output circuit in different TIDA?
1) TIDA-00774 specifies RC values as R42=10K, and C=0.1 uF
2) TIDA-00901 only has a C=0.1 uF
3) TIDA-00281 doesn't specify R and C
Q1: Is the selection designed to filter noise caused by the MOSFET switching? If yes, could you please provide a guideline on how small the cutoff frequency should be compared to the switching frequency?
2) Is the selection designed to filter noise to microcontroller? If yes, could you please provide a guideline on how the time constant calculated from the RC values in relation to the sample time found in the microcontroller datasheet?
I will appreciate you could provide the reasoning for this selection? I see other design applications using much lower R value (say 100 ohms instead of 10k) and much lower C value (say 3300 pF).