output voltage swing
In simple terms, theoutput voltage swing is the range of voltage that an opamp phisically provide at its output.
For example, for a load >2K, the 741 can swing to within about 2 volts of the supply (+/-15V).
Op-amps with MOS transistor outputs(CA3130 and CA3160) can swing all the way to positive and negative supply voltages.
If you apply higher voltage to the (+) input than to the (-) input, the output will swing to +V - something1, if you reverse inputs, the output will swing to -V+something2. The difference between something1 and something2 will be the output voltage swing..
Regards,
IanP