• For pseudo-differential input applications of the AD7988-1, or AD7988-5, can the IN- be connected to a voltage other than GND?

    For pseudo-differential input applications of the AD7988-1, or AD7988-5, can
    the IN- be connected to a voltage other than GND?

     

    The IN- can be connected to max input voltage of -0.1V to +0.1V.

     

  • AD7988-1 Operating Currents vs. Supply (figure 23 in datasheet Rev A)

    On the AD7988-1 datasheet Rev A, on page 12 of 24, what sample rate is figure
    23 "Operating Currents vs. Supply" based on?

     

    The max sample rate is 100kSPS. Figure 23 can apply to this sample rate, and
    any sample rate less than…
  • AD7988-x: ADC input exceed Vref or GND

    Can the ADC inputs of AD7988-1 or AD7988-5 exceed the reference voltage or go
    below ground?

     

    The ADC inputs should not exceed the reference or go below ground by more than
    0.3V as this may result in the ADC being damaged. If this is…
  • RE: AD7988-1初始化错误

    AD7988-1是16bit ADC, 没有寄存器,你输入什么指令?

    按照手册时序图,Figure 35. 3-Wire CS Mode Serial Interface Timing (SDI High) 发送启动转换, 待转换完成后,即可读取码值。

  • AD7988 - 1

    Good afternoon....

    I currently am using the above subject successfully in a design.  The power supplies are as follows: Vref = 2.5V, VDD = 2.5V and VIO = 2.7V - 3.6V.  Moving forward I would like to re-route the analog supply, VDD to track with VIO.  Can…

  • RE: AD7988-1 don't answer

    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,
  • AD7988-1与单片机spi通信接收数据错位

    尊敬的ADI工程师:

    我的原理图:

     

    AD7988-1与SPI通讯时序:

    我的问题:

    AD7988-1与stm8的SPI进行通信时spi的MISO引脚处于拉高状态,在cnv引脚加入脉冲来使能AD采集。spi使能之后接收的数据都是 FF,这是正确的。打开脉冲之后接收的数据发生了错位,正常应该接收到

    FF FF FF FF 00 00 FF FF FF FF 00  00  FF FF FF FF

    实际接收到的

    FF FF FF FE 00 7F FF FF FF FE 00 7F…

  • AD7988-1的采样率范围

    AD7988-1手册上写着采样率为100Kbps,是指它的最大采样率是100Kbps,我可以通过调节CNV管脚的输入脉冲来修改该AD的采样率?譬如我只想要512Hz的采样率。

  • RE: AD7988 paralell 4-wire

    Hello,

    Apologies for the late response.

    Are the STM32 chip-select signals (GPIOs) for each ADC always HIGH before the CONVERT signal rising edge? The reason I ask is if the SDI pins are still LOW before the CNV rising edge, then the AD7988 will go into…