• Difference between AD7656 and AD7656-1

    Q: What are the similarities and differences between AD7656 and AD7656-1?


    • The AD7656-1 is a pin to pin and software compatible upgrade to the AD7656.
    • The AD7656-1 has reduced decoupling requirements and reduced bill of materials cost compared…
  • AD7656/ AD7656-1 - grounding considerations

    Q: Are there special grounding considerations for the AD7656/AD7656-1?


    A: At least one ground plane should be used. It can be common or split between the digital and analog sections. In the case of the split plane, join the digital and analog ground…

  • AD7656/AD7656-1 - need for RESET

    Q: Do I need to reset the AD7656/AD7656-1 after each sample?

    A: In all modes, the parts should receive a RESET pulse after power-up. After the RESET has been applied, the part should convert normally.

  • AD7656-1 Evaluation Board data fetch

    I have AD7656-1 Evaluation Board and fetching data using Evaluation Board Software.

    I want to fetch data of whole 1 minute for analysis but in software I am not able do that, there is limitation.

    So is there any library (C, C++, python) or SDK by using…

  • AD7656/AD7656-1 - problems even after RESET

    Q: I have given the AD7656/AD7565-1 a RESET and a valid CONVST signal but I periodically get strange and repeatable data. I have factored out noise from input and timing issue during my debug. What else could I be missing?

    A: Ensure a stable reference…


    In the ip core of AD7656-1 for NIOS, the converting start signal  is  defined as adc_convst_o. Its width is only 1 bit, but actually the AD7656-1 has 3 converting control pin CONV_A,CONV_B&CONV_C, I just want to know how to use the IP core to control…

  • EVAL-AD7656-1 schematic


    We are currently building a prototype of our industrial monitoring device which will use an AD7656-1 ADC and a digital processor that will collect & analyze the samples. For the prototype we would like to use AD7656-1 evaluation board, but with…

  • AD7656-1 Popping problem

    I am using the AD7656-1 for monitoring power supply signals. The input signal level is +/-10V. All 6 inputs are buffered by AD8221BR(Diff opamp) and then connected to the AD7656-1.

    AD7656 power supplies: VDD=15V, VSS=-15V, AVcc=DVcc=5V, V-Drive=3.3V…

  • AD7656与AD7656-1的区别



    A) 如果AD7656和AD7656-1的输入通过100kohm电阻连接到AGND,这两款器件有何区别?

    B) 如果AD7656和AD7656-1的输入直接连接到AGND,这两款器件有何区别?

  • AD7656-1 - random number generator

    Dear colleagues,

    I am having tough times with the AD7656-1. It is connected in hardware mode, with internal reference, VDD/Vss +/-6.0V, input +/-5.0V max., input channels V1-V4, no STANDBY, CONVSTA+CONVSTB tight together, SPI interface, no daisy chaining…