I just recently bought a OPA350 OP-AMP due to its fast recovery speed that I need for my application (Precision Rectifier), it just arrived today and I went to go test the circuit. However weir behavior is starting to surface at high frequencies...but this time it's the Vpk-pk.
Frequencies of (100Hz-10kHz)
Frequencies of (20kHz)
As you can see the \$Vpk-pk\$ took a beating at 20kHz and I thought this was due to the bandwidth of the OP AMP, however it's stated to be 30MHz. It also gets much noisier as well.
so the flatness should decade 6dB/sec after 30MHz ish, but why is it doing it around 20kHz?
SLEW RATE EQUATION:
\$SR = 20kHz*2*\pi\$
\$SR = 0.127V/uS\$
The OP AMP is rated for 22V/uS