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    1. ADA4805 Output Voltage Swing

      Forum Thread
      Answered
      Operational Amplifiers
      11 July, 2023
      Hello at all i would like to know if there is an issue with the spice model of the ADA4805 or just something i do not understand correctly in the datasheet. With condition given in the datasheet: The Output should be able to have an output swing of: But the …
      Video ProductsVideo Amplifiers and Analog Video FunctionsDatasheet/Specsada4805spice modelVideo Operational Amplifiers (Op Amps)ad8045output swing level

    2. ADA4805 output voltage swing

      Forum Thread
      Answered
      Operational Amplifiers
      09 October, 2016
      I am testing current capability of op-amps by evaluating voltage swing to rails with simulation in PSpice. I do it by sweeping through a current source at the output (at 75°). For negative rail (and currents) the V2 is set to 0V. However ,ADA4805 shows weird behavour: it is …
      ada4805simulation modeloutput swing level

    3. ADA4805-2ACPZ-R7 to drive differential ADC

      Forum Thread
      Answered
      Precision ADCs
      24 September, 2020
      Hi Friends,I'm designing an ADC for my input signal +/-4VPP.But the amplifier ADA4805-2ACPZ-R7 is a single-ended opamp. How to drive a fully differential ADC from a single-ended bipolar signal. Also, can I use +2.5V as a reference voltage for a +/-4VPP sin …
      Single Channel A/D Convertersadcada4805ad7982adc conversionPrecision A/D Converterssingle ended

    4. Is the ADA4805 Input Impedance Modeled?

      Forum Thread
      Answered
      Operational Amplifiers
      I simulated the ADA4805 using a source impedance of 500kohms and a voltage divider on the input with an impedance of 1meg in parallel with 1 meg (500kohms). The resulting waveform showed a signal of exactly half of the original, indicating the 260kohm differential input impedance listed on the datasheet …
      Operational Amplifiers (Op Amps)Datasheet/SpecsRail-to-Rail Op Ampsada4805-1

    5. ADA4805 output lagging behind input

      Forum Thread
      Answered
      Operational Amplifiers
      17 May, 2021
      Hello all, I have the following circuit implemented on a PCB, it is a basic non-inverting amplifier, with an amplification factor of about 55. There are some amendments: R340 has been changed to 180Ohm and R341 has been changed to 10k (to offset a little the effect of the …

    6. ADA4805-2ACPZ-R7 to drive differential ADC

      Forum Thread
      Answered
      Differential Amplifiers and ADC Drivers
      25 September, 2020
      Hi Friends,I'm designing an ADC for my input signal +/-4VPP.But the amplifier ADA4805-2ACPZ-R7 is a single-ended opamp. How to drive a fully differential ADC from a single-ended bipolar signal. Also, can I use +2.5V as a reference voltage for a +/-4VPP sin …
      adcadc driveroperational ampdifferential

    7. ADA4805 Follower with Floating Input

      Forum Thread
      Answered
      Differential Amplifiers and ADC Drivers
      10 August, 2020
      If I connect the ADA4805 as a unity gain follower and leave the (+) input floating, where will the output go? I'm using a +/-3V split supply. I assume it will saturate at one of the power rails. Can you tell me which one?

    8. ADA4805-1 Internal capacitance component

      Forum Thread
      Answered
      Operational Amplifiers
      21 January, 2020
      Hi, I would like to use ADA4805-1. So, I have a question. Please help me. Question： I am considering ADA4805-1. The application is motor current detection.I use it as an I-V amplifier to detect the voltage difference from the sense resistor. I'm trying current …
      Operational Amplifiers (Op Amps)amplifiersSimultaneous Sampling A/D Convertersad7266Rail-to-Rail Op AmpsPrecision A/D Convertersada4805-1

    9. ADA4805 output impedance

      Forum Thread
      Answered
      Other Products (EN)
      27 December, 2019
      Hello, From the datasheet, how can I get ADA4805 output impedance @100kHz ? Thank you for your help on this. Best regards, Benoît,

    10. RE: Is the ADA4805 Input Impedance Modeled?

      Forum Reply
      Operational Amplifiers
      07 February, 2025
      Hi Achim Thanks for your comments. Hi pcbguitar As mentioned by Achim, the op-amp differential input resistance are tied between the inverting and non-inverting input (not input to ground) so it does not go parallel with your R7. Here's an app note for your reference: https://www …