• ADA4522-1/ADA4522-2 huge offset voltage


    I want to use 1 ADA4522-2 or 2 ADA4522-1 as unity gain buffer for 30V and 48V. To test the ADA4522-1 I created a minimal setup (see attached schematic). While I have 25.1491V on +IN, I get 25.1848V on -IN. That means an offset of 35.7mV. In the datasheet…

  • ADA4522 1/f noise?


    The datasheet of ADA4522 shows the measured voltage noise density for only  > 10 Hz frequency region.

    I was measured the power spectral density (square of voltage noise density) in the 0.001-32 Hz range.

    The result is shown at the attached figure…

  • ADA4522-1 in differential (non-inverting) integrator configuration (railing)

    I have a question regarding the "railing issue" of the ADA4522-1.
    I want to use this opamp as a DC servo for a TIA, see below.

    As mentioned in the datasheet on page 30 the opamp may rail to V+ if the source resistance at the non-inverting…

  • RE: ADA4522 feedback resistor

    Hi seekyong,

    According to this EZ thread by dcruz, "The condition that could avoid this latch up condition is by using a power supply that has a high slew rate. Generally, a power supply that has a slew rate of 0.5V/ms or faster could avoid this…

  • RE: ADA4522 Drift

    Hello Emman,

    For one of my project (designing a low drift voltage source), I have the same question as Ben.

    I know that this post is pretty old, however, have you published the results of the characterization of the long term drift of the ADA4522 ? Would…

  • ADA4522 clamp circuit and

    I have two questions about ADA4522

    1. For sure.  Amplifier have input EMI filter and clamp circuit with limit the input current to ±10 mA

    Should not be a problem with the situation shown in Figure?


    2. ADA4522 have Input Bias Current 50 -150pA,…

  • RE: using ADA4522 as instrumentation amplifier

    Hello NitinKAjay,

    Here is the ADA4522-1 configured per datasheet Fig. 82 as an Instrumentation Amplifier and the model / simulation does seem to work fine:

    The gain of 41 V/V (= 1+ 10kohm / (500ohm) /2 ) matches the expected value.

    Here is the simulation…

  • ADA4522


    I want to use the ADA4522 as follows:

    - Positive power supply connected to ground.

    - Negative power supply connected to -50V.

    Will it will work?


  • RE: ADA4522 Spice model Input Bias Current Too high


    Select in the LTspice library, ADA4522-1 model and add its symbol on your test circuit.

    If you opt to use the one in the web, download the cir file. To easily use it and associate it in a symbol without problems, add "opamp2" symbol from the library…

  • ADA4522 internal oscillator


    My customers are suffering from 124MHz and 63MHz unwanted radiation appearing on the board.
    My customers are exhaustively checking the device's internal oscillator on the board.
    If you have any material that reassures my customers about the ADA4522…