In case of AD8137 differential amplifiers' simulation, I have problem to understanding the output behavior. The input and feedback resistors value is 1 KOhm. Therefore I suppose to have gain 1 and which leads the output voltage as like input voltage. Am I right? But if I see the simulation the Output voltage decreased half of the Input voltage. What is going on here? Am I missing something?
The input amplitude here is 500mV, hence 1Vp-p and R1, R2 both are 1KOhm, no offset. In my application this input may vary.
In this particular situation, the simulation result showing that input is 1Vp-p while output voltage is 500mVp-p and this is exactly half of the input (why?). Isn't this suppose to be same? No common mode voltage inserted. I have read through the data sheet but the reason I did not find. Can anyone help me to find out the reason here?
Thank you in advance.