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Results on Analog.com

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  • Product_categories.lvl0:A/D Converters (ADC)
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  1. EVAL-AD7768-1
    Evaluation Board & Kit
    The EV-AD7768-1FMCZ evaluation kit features the AD7768-1 24-bit, 256 kSPS analog-to-digital converter (ADC). The EVAD7768-1FMCZ board connects to the USB port of the PC via the EVAL-SDP-CH1Z motherboard. By default, power is supplied from the EVAL-SDP-CH1Z supply, which is regulated to 5 V and 3.3 V to supply the AD7768-1 and support components. The EV-AD7768-1FMCZ software fully configures the AD7768 …
    EVAL-AD7768-1

    Documentation

  2. Pin-Compatible, High Input Impedance ADC Family Enables Ease of Drive and Broadens ADC Driver Selection
    Analog Dialogue

    Maithil Pachchigar

    The AD4000 ADC family unique combination of high-Z mode, reduced input current and longer acquisition phase enables ease of drive and help designers eliminate dedicated high-speed ADC driver stage, saving PCB area, power and BOM cost and broadens choice of ADC drivers.
  3. Condition Monitoring System Design Choices and Their Impact on Signal Chain Implementation
    Technical Articles
    Oct 21, 2021

    Naiqian Ren

    This article provides a high level discussion of sensor interfacing data acquisition (DAQ) signal chain design considerations for condition monitoring systems.
  4. Low Noise and Low Power DAQ Solution for Seismology and Energy Exploration Applications
    Analog Dialogue

    Steven Xie,

    David Guo

    Seismic geophones are electromechanical conversion devices that convert ground vibration signals into electrical signals. This article describes a very low power data aquisition (DAQ) system.
  5. Design, Development, and Evaluation of a System to Obtain Electrodermal Activity
    Technical Articles
    Jan 19, 2018

    Javier Calpe,

    Jose Carlos Conchell

    Learn how to provide a useful physical system to investigate and finally estimate and quantify the stress level of a person.
  6. Next-Generation SAR ADC Addresses Pain Points of Precision Data Acquisition Signal Chain Design
    Analog Dialogue

    Maithil Pachchigar,

    Alan Walsh

    This article discusses the common pain-points encountered in designing a precision data acquisition signal chain and how to address them using the next generation of 16-bit/18-bit, 2 MSPS precision SAR ADCs.
  7. Analyzing and Solving Fixed Frequency Spur Issues in High Precision ADC Signal Chains
    Analog Dialogue

    Steven Xie

    When designing precision signal chains, it can be hard to achieve a clear noise floor without spurs. Spurs can be introduced by components or they can be the result of external interference.This article will introduce approaches for determining the root causes of spur issues in high-resolution, precision ADC applications and present solutions to solve them.
  8. What Are the Most Important Timing Factors for Low Power Precision Signal Chain Applications? Part 2
    Analog Dialogue

    Padraic O’Reilly

    In part 2 we will focus on the factors that influence timing if the ADC of choice is successive approximation (SAR ) as opposed to sigma-delta (Σ-Δ) there will be a different set of timing considerations that need to be taken into account.
  9. SAR ADC & Driver Quick-Match Guide
    Product Selection Guide

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    251 kB

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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
      04 February, 2025
      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 …