• AD7718直流偏置

    我使用AD7718进行10个通道的数据转换,单3.3V供电,3V基准源。设置上是斩波使能,转换频率100Hz左右,增益是1。目前遇到的问题是每一个通道转换出来后都有0.03V左右的直流偏置,更换芯片后也是一样的。请问有没有人遇到过类似问题,该如何解决?

  • Multiple AD7718 SPI configuration

    Hi everyone,

    I want to know if it's possible to connect two AD7718 as shown in the Figure 15 from AN-1248 App note. I am not sure if that ADC has a hi-Z SDO pin when inactive. The master device is a Raspbrrry Pi that controls both CS pins and reads…

  • AD7718单通道损坏

    我现在使用的AD7718 第6通道经常损坏,坏掉的现象是采集输入端电压固定为5V,采集端短路如下:ADC_VBB_U接ADC通道6,另外还有相同的两路输入分别接通道5和通道7,通道5和通道7从来没有损坏。

  • How to Calibrate the ADC AD7718

    Hi,

              I am working with the ADC AD7718 and interfacing it to 8051 microcontroller, i am able to drive the adc and receiving the converted data. Now I want to write the Auto calibration routine for the same please any one help me in this case.

    Thank you…

  • AD7718 R-C Filtering on AIN/REF inputs

    Hi,

    I'm using the AD7718 ADC and I'm not sure the best way to filter the AIN inputs, REF+ inputs and AVDD/DVDD inputs. My issue is that I'm going to be using both Single Ended and Differential type sensors but I need to have the flexibility of using…

  • 5V voltage reference for the AD7718?

    My application requires converting voltages from (almost) 0 to 5V using fully differential probing. From the application sheet it seems like I need to use a 2.5V reference in order to cover the entire input range of the ADC?

    Somehow it seems that in…

  • How run the EVAL-AD7718 board software?

    Hi,

    I bought the evaluation board, EVAL AD7708/7718. The software interface runs only a windows 2000.

    I have installed a virtual machine on my laptop that monted windows 10 and I have installed the AD7718 eval software.

    There is an error when I try to…

  • Can you help me to connect Arduino with AD7718?

    Hi,

    I'm trying to connect the Arduino 2 board with the AD7718 using SPI interface.

    I have followed the configuration instructions of the AD7718 datasheet but the ADC does not response. The data in ADC input (DIN) is correct (I have checked with…

  • AD7718 channel affect each other, offset and scale are not calibrated at room temperature

    There 2 problems, and they might be related: 

    1- The ref1+  is connected to a stable 2.500V signal and ref- to 0V. There are no RC filters placed on any inputs and the signals are buffered using TLV333 opamp. All ten channels act in pseudo-differential mode…

  • AD7718_ Thermocouple Application

    One customer used AD7718 to sample the thermocouple's output. The signal chain
    is: Thermocouple + RC Filter + ADC.

    She tested AD7718, configuring the input as differential input, when she
    connected the two input to the GND, the output…