antknee
New Member
I have an OPA452 operational amplifier circuit that I made up last night. The circuit works and the schematic is below with a copy of the datasheet. It is non inverting with R1 and R2 both at 39Kohms and the chip is listed as stable at unity gain or above, so the gain should be stable at x2. GBP = 7.5MHz and SR = 5V/us.
I'm finding at 10KHz the gain is 2 and at 100Khz it is 4. Why is the gain changing? I thought it was supposed to be fixed?
Thanks.
I'm finding at 10KHz the gain is 2 and at 100Khz it is 4. Why is the gain changing? I thought it was supposed to be fixed?
Thanks.