To divide an input voltage by about 10 as well as reducing the impedance , I came across 2 possibilities: a buffered voltage divider (top) and an inverting amplifier (bottom).
It is not a problem to invert the signal (the input voltage is itself both negative and positive) and both circuits are using the same components, so they look the same for me. What should I consider to pick one of those circuits in my design?
To give a little bit more information about my requirements:
- Input voltage: -25V to +25V
- Bandwidth: DC to 10kHz
- Op Amp supply: probably +3.3V and -3.3V