Hi, Mr. Mickle.T and Mr. Kleinstein ,
I had made a mistake that I want to see the performance of LTC1052 and I replace the U105 with it, but got the ZERO checking error when powering on and smell something is burning . When I replaced the LT1220 back in U105, it recovered but the AUTO RANGE function failed. Maybe the LTC1052 is damaged as the max power rail is 18V and now applied 30V. The INL issue is still same, so the input amplifier is ok?
Which is the range comparator? Please give me some advice!
Updated, the R155 is burned to 750ohm, when replaced , the auto range is working now.
Back to the 10V -1V INL issue. What can I do in the next step?
Best Reagrds,
szszjdb