• ADR444 Incorrect Output Voltage

    I am trying to use the ADR444 as a 4.096V reference for the ADAS3023, using the AD8031 as a buffer, as suggested on the ADAS3023 data sheet.  The ADR444 is giving about 4.3V, which is dropping to 4.2V after the AD8031.  Both of these are operating off 5V…

  • ADR444 reference design for noise reduction?

    We need reference voltage of 4,096V with the lowest noise.

    We try ADR444 + output filter+pA low noise buffer amplifier.

    Before we start counting and beating a dead path, you do not have a appnote or reference design with similar problem?

    For specify…

  • RE: how is the sensitivity and potential of the trim pin of adr444

    Hi Wrmin,

     

    I really appreciate for sharing your test data. Based on comparing humidity step response data of ADR444 with ADR4540, both should perform similarly. Both ADR444 and ADR4540 integrated circuit is enclosed within plastic package. Plastic package…

  • CN0143 - Mistake in Figure 3

    The output of U4 (the ADR444) is not connected; what is currently drawn to the NC pin (No Connect) should be drawn to VOUT.

    [Edited for clarity]

  • RE: I need IBIS model for ADM1270

    Hi Priyanka,

    IBIS models are only used for modelling digital pins. Since the ADR444 is a voltage reference with no digital pins we do not provide an IBIS model for this product.

    Regards,

    Rob

  • recommended ADC driver, external reference and reference buffer options

    What are the recommended ADC driver, external reference and reference buffer
    options?

     

    The ADAS3023 datasheet recommends the ADA4841 and AD8031 as ADC driver (to
    drive auxiliary input pair - AUX±) and reference buffer, respectively. Other
    choices…

  • ADAS3022 recommended ADC driver, external reference and reference buffer options

    What are the recommended ADC driver, external reference and reference buffer
    options?

     

    The ADAS3022 datasheet recommends the ADA4841 and AD8031 as ADC driver (to
    drive auxiliary input pair - AUX±) and reference buffer, respectively. Other …

  • RE: AD7626 External Reference Options

    Hi all,

    the datasheet for the AD7626/Ad7625 show the buexternal ref bufffering of the external 4V096 ref before being applied to the REF pins - I dont see in the datasheet the current requirements on the external Ref.

    What would the effect on performance…

  • recommended ADC driver, external reference and reference buffer options?

    What are the recommended ADC driver, external reference and reference buffer
    options?

     

    The AD7961 datasheet recommended ADC drivers are the two single-ended op amps
    ADA4899-1 and AD4897-1 or differential amplifier ADA4932-1. The low-noise,

  • RE: AD717x, external C is required when Internal REF is enable

    Hi Akihiko,

    Yes you are correct.

    With REFBUF enabled, the buffers provide the benefit of giving the user high input impedance and allow high impedance external sources to be directly connected to the reference inputs. But when using external references…