• RE: AD7190 Voltage Reference

    Hi Johnny,

    Thank you very much for the response.  In some applications, I won't be using an ADR431 type reference, so for the input impedance, I am interested in the frequency dependent nature.  The data sheet mentions that the input impedance is dynamic…

  • RE: Transient behavior on first samples of AD7980

    Hi Percy,

    From the AD7980 data sheet:

    When REF is driven by a very low impedance source, for example, a reference buffer using the AD8031 or the ADA4805-1, a ceramic chip capacitor is appropriate for optimum performance. If an unbuffered reference…

  • RE: Which reference should be used with the AD719x?

    A low noise reference source is required to achieve the best performance from the ADC. Suitable external references include the ADR421 and ADR431. It is recommended to decouple the output of these references to further reduce the noise level.

    In applications…

  • RE: We have evaluated the AD719x chip....  Now What's Next......

    Hi DonWarr,

    It is possible to use the part to monitor lab grade power supplies as long as the analog input voltage limits of the part are satisfied. The analog input voltage  is restricted to a range between AGND – 50 mV and AVDD + 50 mV in unbuffered…

  • RE: EVAL-INAMP-82RZ awful noise performance

    These inamps are to be used in conjunction with a 500kg strain gauge in order to provide a high precision, very low noise analog front end for the ADC mentioned above (AD7175-8). An example circuit is provided in the datasheet of AD8422 page 23 fig. 63…

  • AD5724AREZ Output Voltage Issue

    I am working with an AD5724 DAC in the following circuit.  I have verified the outputs to the DAC by use of an oscilloscope -- SYNC, MOSI and SCK are operating as specified in the datasheet.  I can send data to the DAC and get the output values of the DAC…

  • RE: Problem with AD8293G80

    Hello ERussell,

    The minimum voltage you can set on the reference terminal is 0.8V above the negative supply. This would explain the behavior you are observing.

    I can think of two options for you:

    1. You can increase your reference level. However,…

  • TAGS LISTS: Voltage References

    LT1460
    LTC1258
    LT1021
    LT1027
    LTC1798
    RH1021-10
    RH1021-5
    RH1021-7
    LT6660
    LH0070
    LTC6655
    AD2700
    AD2702
    AD584S
    REF01S
    REF05S
    REF10S
    REF43S
    REF02S
    AD1582
    AD1583
    AD1584
    AD1585
    LT1019
    LT1236
    LTC6652
    REF02…
  • ADL5902 - Aging question: 0.8dB drift within 4 months.

    Hi,

    We observe in our system about 0.8 dB (30mV) drift in power within 4 months.

    We suspect that the failure is due to ADL5902.

    At the input of the ADL5902 is a 15dB attenuator and at the output, ADC AD7791 is connected with reference of 2.5V from…

  • channel selection of AD7655

    the input channel select control A0 can not work properly, that is when A0=0,
    it will sample INA2 and INB2, not INA1 and INB1. Is it possible? Another
    problem is that using the A channel and B channel to sample the same voltage
    (2.5V…