Low Pass Filters on Sensor inputs
Posted: Thu Nov 14, 2013 9:01 am
Hello,
I have the V3 board schematics and I am looking at the circuit design for the sensor inputs. Both temp sensor have the 2.2k resistor and the 1uF cap but the MAP and TPS sensors use a 1k R and a 2.2uF cap instead. I was wondering why? Mathematically their cutoff frequencies are the same, but why use a different combination?
I have the V3 board schematics and I am looking at the circuit design for the sensor inputs. Both temp sensor have the 2.2k resistor and the 1uF cap but the MAP and TPS sensors use a 1k R and a 2.2uF cap instead. I was wondering why? Mathematically their cutoff frequencies are the same, but why use a different combination?