Hello
Thank you for taking the time to read this. This is kinda of a bizarre question with the final answer being "Don;t do this" but here is the question.
We are using the TMP422 and have the 2 remote sensors hooked up to PNPs, 2N3906s, in transistor-connected configuration. Now some how our CM put the 2N3906s in backwards where the Emitter was connected to ground, the Base was connected correctly and the Collector was connected to the DX1/DX3 pins. Basically the Collector and Emitter were swapped. So the remote temperature at least at room temperature works. Not knowing the internal works of the TMP422 is this possible? The datasheet says to use the emitter-base so not sure what happens using the collector-base scenario. Can anyone provide any info on this? We are going to correct it but wanted to know why it worked and will it fail over temperature or part to part variations?
Thank you
Gary
