I have an automotive application using a PIC microcontroller, and need some suggestions regarding analogue inputs....
I need to measure the throttle position sensor voltage, but I can't connect the PIC ground to the engine ECU ground (they aren't the same). I need a unity gain differential input amp that can measure the voltage between the ECU signal and sensor ground pins, but the output must be relative to the PIC ground. The buffer must run from the same single-rail 5v supply as the PIC and have a rail to rail output.
Does anyone have any suggestions for a suitable chip, preferably one that is currently used in automotive applications.
TIA.
I need to measure the throttle position sensor voltage, but I can't connect the PIC ground to the engine ECU ground (they aren't the same). I need a unity gain differential input amp that can measure the voltage between the ECU signal and sensor ground pins, but the output must be relative to the PIC ground. The buffer must run from the same single-rail 5v supply as the PIC and have a rail to rail output.
Does anyone have any suggestions for a suitable chip, preferably one that is currently used in automotive applications.
TIA.