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Operational Amplifiers - 741 (2)

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  • Nicolae Sfetcu
    Summed-up Features: a.. Internal Frequency Compensation a.. Short Circuit Protection a.. Offset voltage null capability a.. Excellent temperature stability a..
    Message 1 of 1 , Jun 19, 2001
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      Summed-up Features:
      Internal Frequency Compensation
      Short Circuit Protection
      Offset voltage null capability
      Excellent temperature stability
      High input voltage range
      NO latch-up

      µA741 Equivalent Circuit

      Input Parameters:
      1. Input Offset Voltage (Voi)
        This is the voltage that must be applied to one of the input pins to give a zero output voltage. Remember, for an ideal op-amp, output offset voltage is zero!
      2. Input Bias Current (Ib)
        This is the average of the currents flowing into both inputs. Ideally, the two input bias currents are equal.
      3. Input Offset Current (Ios)
        This is the difference of the two input bias currents when the output voltage is zero.
      4. Input Voltage Range (Vcm)
        The range of the common-mode input voltage (i.e. the voltage common to both inputs and ground).
      5. Input Resistance (Zi)
        The resistance 'looking-in' at either input withe the remaining input grounded.
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