A system I maintain uses an LT1114s smt quad opamp.. These are more like unobtainium each day. The price is now ludicrous.. I need to source a low offsett quad precision op amp. When looking none seen to have such a low input offset.. This is used as a precision current convertor, so I do...
for example input parasitic capacitance in opamp intreduces anothe pole and ruins stability. Sorry for not understanding and answer, is there purely lab measuremnt methos tho get loop gain stability? Thanks. * When you want to include parasitics during simulation - who is stopping you from using a small capacitor at one of the nodes?
Hi, I have designed a folded cascode two stage opamp on 130nm process. The opamp works fine. Figure below shows the gain and phase response of opamp. It has 45 degree phase margin. Now the next step is to design circuit which generated the bias voltages for opamp. For initial case i used a...
The 741 opamp is 54 years old. It is noisy, has a poor input and output voltage range so needs a fairly high supply voltage (most specs are with a +15V and -15V supply) and has such a poor slew rate that it has trouble above 9kHz.
My very first post, so please be gentle! I am doing an analog design where I want to use an LM324 single supply opamp. So I decided to have crack at LTSPice. I realise LTSpice does not come with a model for that, so I must find and add in my own. Even that process seems onerous, on top of the...