Op Amp Question: Input Load

[Raven Luni]

Greetings,

Just wanted to be 100% clear on something I'm working on: If I'm using a fixed resistor divider as an input for a comparator, can I take several similar inputs from the same point or does each op amp have a loading effect that would shift the bias. I dont imagine I'll be feeding any more than 4 op amps at a time this way.

 

[(*steve*)]

Unless there is some feedback to the input that is connected to this voltage divider, the input impedance is probably too high to have any measurable effect.

There is a slight potential issue with offset voltages caused by input offset currents through unequal impedances on the inputs, but this would typically be very, very small.

 

[Raven Luni]

cool thanks