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  • AD822: PSRR

    GenevaCooper
    GenevaCooper

    Q 

    I would like to get support regarding the power supply rejection value of the
    component AD822. The data given in the tables are referred to the input or the
    output of the opamp?





     

    A 

    The AD822 PSRR specification in the datasheet…
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822: FAQ

    GenevaCooper
    GenevaCooper

    FAQ

    • 8 months ago
    • Amplifiers
    • Documents
  • AD822:Asymmetrical supplies

    GenevaCooper
    GenevaCooper

    Q 

    In my application the AD822 gets dual supply, but not symmetrical:
    V+ = + 24V and V-= -5V. The AD822 drives a load of 4 kOhm against analogue
    ground.
    Does work the AD822 with the unsymmetrical supply voltage in a proper way ?

     

    A 

    AD822…
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822: Overvoltage issue

    GenevaCooper
    GenevaCooper

    Q 

    The problem I have is as follows: I am having to apply a signal of
    approximately +/-1 volt to the -ve input of one amplifier in an AD822, while
    the device is unpowered. This event occurs only once, during our system
    proving, and the signal…
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822: Phase reversal

    GenevaCooper
    GenevaCooper

    Q 

    Tha datasheet states that the opamp AD822 do not phase invert the output signal
    when the input signal exceeds the supply voltage, but it does. How can that be?

     

    A 

    It is important to distinguish between over-voltage protection (i.e. the
    …
    • 8 months ago
    • Amplifiers
    • Documents
  • ad822: Phase reversal (1)

    GenevaCooper
    GenevaCooper

    Q 

    A customer is reporting a behavior of the AD822 as follows:
    If an input gets a voltage level that is above the Vdd, the output is going low
    instead of staying at Vdd potential.

    ° Would it be possible to get some infos on the background…
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822: Input Overvoltage protection

    GenevaCooper
    GenevaCooper

    Q 

    Is it allowed to have +-30V at the input, if the part is not powered.

     

    A 

    The AD822 cannot have +30V or -30V applied to either input when there is no
    power on the supply pins. As a general rule, the absolute maximum current into
    a pin should be limited…

    • 8 months ago
    • Amplifiers
    • Documents
  • AD822: Output voltage exceeds rails

    GenevaCooper
    GenevaCooper

    Q 

    In an amplification circuit with AD822 supplied with +15V/-15V, there could be
    an operating condition in which the output of the op-amp is saturated to +15V
    (Vin is so high that Vin*G>15V). Besides, in this situation, the output could …
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822 Input Impedance - variation from typical spec and how to measure it?

    GenevaCooper
    GenevaCooper

    Q 

    would like to know more about the AD822’s input impedance. In the datasheet, 
    the AD822’s input impedance is a typical spec, do you have any more information
    regarding an estimated variation of this impedance? What's the best way to …
    • 8 months ago
    • Amplifiers
    • Documents
  • AD822's Input Impedance - best way to measure and variation from typical spec?

    GenevaCooper
    GenevaCooper

    Q 

    In the datasheet the AD822’s input impedance is a typical spec. Do you have any
    more information regarding an estimated variation of this impedance? What's the
    best way to measure this parameter?

     

    A 

    We do not measure the input impedance…
    • 8 months ago
    • Amplifiers
    • Documents
>
 
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