Need help with op amp selection
Need help with op amp selection
(OP)
I'm working with a signal with frequencies up to 3000Hz, amplitude of 100mV. I'd like to scale this to 6V. I'm using an LM324, which should be able to handle this, but I am getting some odd results, which make me think the op amp is slewing. I need an input impedance of >1Mohm and <100pF. Can someone please recommend a better op amp than the 324.
thanks,
EE
thanks,
EE





RE: Need help with op amp selection
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need help with op amp selection
RE: Need help with op amp selection
The TL 084 has served me very well in medium speed applications. It has a little better than 10 V/us and is uncritical in all respects.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need help with op amp selection
Thanks for your help.
EE
RE: Need help with op amp selection
I onced worked with a guy who asked me to design a peak detector. I asked him what amplitude & frequency range it would see. "Couple of volts, 60 Hertz," he replied. Seemed like a simple design with an average opamp.
Turned our he was looking at signals from a hard drive with a platter rotating at 3600 RPM. Yep, a fundamental at 60 Hz, but 99.99% of the energy between 10 MHz & 20 MHz.
RE: Need help with op amp selection
RE: Need help with op amp selection
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need help with op amp selection
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need help with op amp selection
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need help with op amp selection
RE: Need help with op amp selection