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Results on Analog.com

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  1. ADR421
    Production
    Product
    Series Voltage References
    Ultraprecision, Low Noise, 2.500 V XFET® Voltage References
    ADR421

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    Sample & Buy

  2. UG-757: Evaluating the AD5380/AD5382 40-/32-Channel, 14-Bit Voltage Output DACs with On-Chip Reference
    User Guide

    PDF

    333.91 K

  3. UG-681: Evaluating the AD5390/AD5392, 16-/8-Channel, 14-Bit Voltage Output DACs with On-Chip Reference
    User Guide

    PDF

    646 kB

  4. AD8421
    Recommended for new designs
    Product
    Instrumentation Amplifiers
    3 nV /√Hz, Low Power Instrumentation Amplifier
    AD8421

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  5. ADR425
    Production
    Product
    Series Voltage References
    Ultraprecision, Low Noise, 5.00 V XFET® Voltage Reference
    ADR425

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  6. ADR423
    Production
    Product
    Series Voltage References
    Ultraprecision, Low Noise, 3.00 V XFET® Voltage Reference
    ADR423

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  7. ADR420
    Production
    Product
    Series Voltage References
    Ultraprecision, Low Noise, 2.048 V XFET® Voltage Reference
    ADR420

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  8. ADR441
    Production
    Product
    Series Voltage References
    Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source
    ADR441

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  9. ADR431
    Production
    Product
    Series Voltage References
    Ultralow Noise XFET® Voltage References with Current Sink and Source Capability
    ADR431

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  10. UG-532: Evaluation Board for AD5696R/AD5696/AD5694R/AD5694 16-Bit/12-Bit, Quad Channel Voltage Output DAC
    User Guide

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    414 kB

Results on EngineerZone

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    1. output noise of AD8421ARZ

      Forum Thread
      Answered
      Instrumentation Amplifiers
      23 November, 2023
      as shown as the picture above, I connect the vin+ with vin- and power is ±5V, gain is 80. But the noise is about 10mV from oscilloscope.How can I reduce the noise? Thanks!
      adr435amplifiershardwareInstrumentation Amplifiersnoisead8421instrumentation_amplifier

    2. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      06 December, 2023
      Hi DPFATE_DP, You may want to consider ADR435 which has a very low-noise output. However, please consider that ADR435 is a voltage reference IC with only 30mA of output current. This might not be sufficient if you will use this for your other ICs. Kindly visit our power …

    3. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      05 December, 2023
      Hi Franz, Could you give me some advice about which power ICs I should select ? Best regards, DPFATE_DP

    4. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      04 December, 2023
      Hi DPFATE_DP, Since there is also a 10mV noise on your power supply pin, the noise may come from your power ICs. You may check your power management for noise sources. AD8421 needs a stable DC voltage as the noise can adversely affect performance. You may place a 0 …

    5. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      04 December, 2023
      Hi Franz, I am so sorry. My previous description is wrong. In fact, I use two AD8421 to get two stage of amplifier. the Gain of first stage is 80 and second stage is 50. The test circuit of first stage is shown as the picture in my question and …

    6. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      30 November, 2023
      Hi DPFATE_DP, Could you check the noise on your power supply as well as your vref? Best regards,Franz

    7. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      29 November, 2023
      Output is just like the picture above. but it is the result of gain = 4000. No input signal. I connect the vin+ with vin- and you can refer to the circuit of my question. Thanks!

    8. RE: output noise of AD8421ARZ

      Forum Reply
      Instrumentation Amplifiers
      27 November, 2023
      Hi DPFATE_DP , Can you share your input and output scope measurement? Best regards, Franz

    9. AD7609 works properly at 4.75V rather than 5V

      Forum Thread
      Answered
      Precision ADCs
      24 December, 2014
      I have an AD7609 powered by a single 5V supply (AVcc linked to Vdrive with a 1000R @ 100MHz, 200mA EMC Ferrite Filter), using Serial Data output. This is using an external 2.5V reference from an ADR421BRZ. Initially this was working properly but now we have observed a strange phenomenon …
      Simultaneous Sampling A/D ConvertersPrecision A/D Convertersad7609

    10. Consideration for AD8421

      Forum Thread
      Answered
      Instrumentation Amplifiers
      28 March, 2013
      … the amplifier is not up to the calculated value. No issues with the circuit connections. Am i wrong with the ic selection? Is there any fixed gain version of this ic? Part Number of IC: AD8421ARZ. Is there any issue with the supplies? Any reply will be helpful. Regards, Chaitanya.
      amplifiersInstrumentation Amplifiersad8421