Our customer have met one trouble as following.
(This discuss came from another sled cause my miss understood)
On my enclosed schematic Fig-1.pdf,
step-1 power off and keep waiting around 30 sec
step-2 power on
step-3 around 90msec offset voltage appear at out-1 pin
step-4 power off and on but the 90mV offset is not cleared
Also refer to my enclosed time chart "tme chart when power off and on.pdf".
*1 ; 30sec is not certainly.
*3 ; in some cases, it return to expected value
After once this trouble happen, out-2 is up and dowm on offset voltage 900mV(x10 gained value)
When we work with above action, does your AD8629 do such a motion?or not.
If he replace the thermopile(TP) to fixed resister 175kohm, then the result was same.
Please advice us before your holiday!!
Thank you in advance Kaos