alternative OP for AD8692ARZ

[somaye]

Hi everyone,
I was asked to find an alternative pin-to-pin compatible OP for the AD8692ARZ as an impedance converter in the circuit that has a load capacitance of 100 nF with only a 1 ohm support resistor). One suggestion for this was the TLV342AIDR.

I compared these two op-amps (see screenshot) to see if the alternative amplifier could do the same job with a load of 100 nF! Because the old opamp has the ability to handle 100nF without any additional way with a pulse input of 100mV and an offset voltage of 2.4V.

I already did a AC analyse and tranisnte analysis. The alternative analysis had a large ringing, I am not sure if I did something wrong?
and even if I give 2.4V pulse amplitude, it looks worse.

If everything is proper, could you please advise me if there is an alternative OP that can do the same job as the AD8692ARZ?

Thanks in advance

P.S: one OP is simulated in LTspice and another in Tina simulator because I didn't find both in one simulator, but i tried to set them in the same situation.


best regards,
Somayeh

 

[vtech]

Go to digchip.com and use the cross reference section. --very useful information