• AD7983 REF Pin behavior

    I'm working with an AD7983 and hoping to get more information regarding the internal functionality of the REF pin. The datasheet describes how to use this pin from a top-level perspective, but I'm looking for a more technical description.

    How…

  • EVAL-AD7983-PMDZ unexpected offset

    Hello,

    I driving EVAL-AD7983-PMDZ by Unipolar, Single-Ended sinusoidal signal (Vpp=4V, Voffset=2 so Vmin=0, Vmax=4).

    R2 and R4 were removed from the EVAL-AD7983-PMDZ PCB because they give the additional useless voltage offset:

    I see that samples are…

  • Dose LTM2893 suit AD7983?

    Hello everyone

    I want to use LTM2893 to isolate SPI I/F for AD7983, is AD7983 compatible with the LTM2893?

    On the datasheet of LTM2893, It is mentioned LTM2893 is optimized for isolating 1Msps high resolution 18-bit SAR ADCs, but these are only some…

  • RE: AD7983 Overvoltage Input

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • RE: AD7983 input driven by multiplex signals

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • AD7984: Working with true differential input precision SAR ADCs

    Hi, all,

    I'm using an AD7984 to capture the output of a dual slope integrator circuit.  I'm using it in /CS mode, 3-wire, with no busy indicator.  Sampling at 500 KHz. Vref = 3.3V.  SCLK runs at 12 MHz.  It's a 16 channel system, but I'm using 16…

  • AD9783: the function of REFIO

    Hello ,

    I have a question about the function of REFIO of AD7983.

    In the pin descrition tabe, Table 8, REFIO pin is described as "Analog Reference Input/Output (1.2 V Nominal)."

    This description include "Input", but I think that the AD7983…

  • RE: Strange output from AD7984

    Hi Ed,

    You cannot use a true differential ADC in this single ended manner without a SE-to-diff amplifier stage. I am assuming you are grounding the negative input (IN-)? The ADC must maintain a strict common mode spec of Vref/2 +/-5% which is specified…

  • RE: ADC with really "True differential input"

    Hi vlad8016,

             What Klaus mentioned are right. There are three most common types of ADC input structure a.) Single- Ended b.) Pseudo Differential c.) True Differential.  From your description above I can see that you are looking for ADC that has a pseudo…