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  1. #1
    Full Member level 4
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    voltage swing

    for example, Assume that some amp's common output voltage is Vdd/2 .

    Since this amp just have common output voltage at Vdd/2, Is this amp can be considered to have maximum output swing?

    how I can measure differential amp's output swing?

    I have to configure voltage buffer with differential amp?

    thanks

    •   Alt22nd July 2005, 23:08

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  2. #2
    Advanced Member level 5
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    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


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