My customer is trying to release a new product using the OPA322AQDBVRQ1, and he has found a certain graph on the datasheet that does not seem to fit with the behavior of the device as he understand it.
On Page 14, Figure 24, a graph of the Large-Signal Step Response vs Time, the time scale is labeled as (ms), which he takes to indicate milliseconds, but this is a 20MHz GBW part, with a slew rate of 10V/us (microseconds). He finds it hard to accept that, per Figure 24, the part takes ~0.2ms (milliseconds), or 200us (microseconds), to get from -1V to 1V. This calculates to something like 0.01V/us (microsecond).
Is he interpreting the data correctly? Is this an error, or does he need to go out and find a better part for my design? If this is an error, he is asking how long does the part really take to get from -1V to 1V?
