Assertion: amplifier's input impedance | /r/HasProperty | virtual earth condition
Facets:
value: across the input terminals
type: LOCATION
Source sentences:
text: Besides the most obvious fact that the op-amps output voltage V OUT is in phase with its input, and the output voltage is the weighted sum of all its inputs which themselves are determined by their resistance ratios, the biggest advantage of the non-inverting summing amplifier is that because there is no virtual earth condition across the input terminals, its input impedance is much higher than that of the standard inverting amplifier configuration.