Hi to all,
I am developing an application that makes use of several LMP90100 in order to acquire up to 16 thermocouple (K and S type). I would like to reduce the costs of the hardware and the power consumption, for instance removing the bias circuits for each channel since I am going to measure only high temperatures (100 - 1000 °C ).
I would like to know if there is a performance degradation measuring voltage close to VREFN (GND) or if it is better to bias the circuit at 1/2 VREFP as suggested in the datasheet.
Furthermore, would it be possible to switch the differential channels through a multiplexer ? In this case I will cut-off the costs making use of only one or two LMP90100 instead of four. I am wondering if the multiplexer could introduces an unwanted voltage on the analog channels.
Thank you in advance,
Carlo Ferraresi
