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The opamp output on the left side is an extremely low impedance at low frequencies so connect it directly to the input of the opamp on the right side.
The opamp output on the left side can directly feed many opamp inputs on the right side then why do you need the buffer opamps on the right side?
Resistors are not needed.
The opamp output on the left side is an extremely low impedance at low frequencies so connect it directly to the input of the opamp on the right side.
The opamp output on the left side can directly feed many opamp inputs on the right side then why do you need the buffer opamps on the right side?
Resistors are not needed.
I tried to keep the problem simple for sake of the forum post. The more detailed answer is that the second op-amp stage is being used as a clamp/voltage-limiter before an ADC input to protect it from any possible over-voltage - it is a rail-to-rail opamp powered by a VDD of the maximum input voltage of the ADC. That's why the other stage is needed.
Do you need the voltage divider so that the input of a rail to rail opamp is not damaged?
Your post is very confusing since the opamps have no power supplies and a TL074 is not rail to rail.
Do you need the voltage divider so that the input of a rail to rail opamp is not damaged?
Your post is very confusing since the opamps have no power supplies and a TL074 is not rail to rail.
Yeah sorry, I just quickly drew that up just to show locations of the op-amps and basic setup. I didn't think that the type of op-amps or their power connections had anything to do with best practice for where an output resistor should go between op-amp stages.
Ignore all the bs about the quality of the schematic or the quality of the question. I get what it is you're asking and there are definitely right and wrong answers. Since the schematic indicates that this is a problem to be solved, why don't you first tell us your answer, or at least your analysis of the problem?
left op-amp is powered by +/-15V right opamp is rail-to-rail and powered by 3.3V/GND. ADC maximum input is 3.3V. I appreciate you trying to simplify my mock schematic by wanting to remove resistors, but just assume they're there for a reason.
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