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The output resistance of an operational amplifier is defined as the ratio of open-circuit output voltage to short-circuit output current expressed in ohms. Typical values of output resistance range from less than 10Ω to around 100Ω depending upon the configuration and amount of feedback employed.
Output resistance is the ratio of open-circuit output voltage to short-circuit output current, hence:
ROUT = VOUT(OC)/IOUT(SC)
where ROUT is the output resistance (in Ω), VOUT(OC) is the open-circuit output voltage (in V) and IOUT(SC) is the short-circuit output current (in A).
<^< Input Resistance | Course index | Input Offset Voltage >^>
