• AD7836 DAC driven by FPGA. FPGA powered AD7836 not yet powered. Will it damage AD7836

    1. We have a system where AD7836 DAC is driven by an FPGA. FPGA provides Data and Commands to AD7836.

    2. If FPGA is powered and provides Data and Control but AD7836 is not powered, will it cause damage to AD7836

    3. In the same system we have ADC AD7865…

  • 2 Questions for your AD7865-1

    Dear Sir/Madam,

    Our customer asked the following 2 questions to us.

    As for your AD7865-1 ADC,

    Q-1)

    Customer put -10V DC between (VinxA+VinxB) to AGND for a few seconds.

    So in this case, your AD7865-1 is broken the over voltage, correct?

    Your ABS…

  • RE: AD7865 supply voltage

    Hi,

    It was only the AVDD supply of the AD7865 that was at the lower limit, this was due to the 1st order RC filter. The rest of the analogue signal chain had a 5V +/-20mV supply.

    It looks like some PCB issues have caused the problem with the AD7865…

  • RE: An issue about AD7865

    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,
  • Input Impedance of AD7865-2

    Dear Sir, I'm using a AD7865-2, have some problem convertion results. There is a simple Low pass filter on the Vin of AD7865-2. But Resistor value is Zero  ohm, and Capacitor is 0.01uF. In this case, the conversion result is good. But in case of that…

  • AD7865的内部时钟问题

    在AD7865的DATASHEET的引脚 /H  / S SEL功能说明中有:When this pin is at a Logic 0,the AD7865 conversion

    sequence selection is controlled via the SL1–SL4 input pins and runs off an internal clock.

    这句话最后是使用内部时钟还是关掉内部时钟?待解答。

  • AD7865: Multiple CONVST

    Is it possible to restart the con version with two consecutive /convst signals
    in direct requence (double function of signal necessary) ? The second pulse
    will follow the first directly (100ns pulse width )

     

    A conversion is triggered…
  • DAC AD7836 and ADC AD7865

    Dear Madam / Sir,

    Kindly clarify the following points:

    1. AD7836 requires 5-V for logic circuit and +/- 15-V and Vref+ and Vref- for the analog section.

    Is there any powering sequence for these voltages or can we power up simultaneously.

    Of course…

  • AD7865AS-2 and ad7865ASZ-2差异?

      在设计中采用AD7865 4通道ADC采集数据,由于采购问题,第一次采购的了AD7865AS-2,

    第二次采购回来的是 AD7865asz-2. 通过数据手册查看到二者没有区别,但是在使用中对于同样的

    情况采集回来的数据有大概4倍的差异,请问是正常的,还是有什么地方需要注意的?

    以下数据为对某4个通道采样后的量化数据(二者工作的状态相同,工作电压和硬件电路相同):

    AD7865AS-2             AD7865ASZ-2

    8196                        2049      

    9347                        2348

    10680                        2677