Q
I am writing to you because I have a question about the way one of your chips
works. The one I am talking about is the AD595 in its two performance grades (C
and A). The datasheet says that the C and the A versions have calibration
accuracies of ±1°C and ±3°C, respectively. My question is as follows.
If I add a trim circuit such as the one in figure 5 at the application note
AN-369 (calibration circuit), do I get the same output with the two grades (A
and C) once the chip is calibrated?
A
Yes, if the ambient temperature remains at 25degC, however as the temperature
changes the C grade will have a reduced error over temperature in comparison to
the A grade.