Other Parts Discussed in Thread: TINA-TI, TLV2464, AMC1200, TL431
Hello everyone,
I have inherited a circuit in which multiple reference voltages are derived from a single reference voltage: resistance divider outputs are buffered with TLV246x opamps. 0.1u bypass capacitors are placed at the opamp outputs.
Normally, one wouldn't place a capacitor directly at the opamp's output. However, circuits such as above seem to work fine. There is no AC component to the output voltage, but I am not sure if the current out of the opamp is purely DC (I have put a 100k in the simulation above just to have some load).
Is this method fundamentally unstable? Should there be a resistor, let's say 10-100 Ohms, between the opamp and the capacitor even if it drops a few mV?
Thank you.
-ST