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ADS8688: ADS8688 high-speed acquisition

Part Number: ADS8688

HI:

Requirements:

    The 8-channel collection rate is 1ms

Design Scheme:

    MCU using stm32G070

    Frequency 64 MHZ

Difficult points:

    1、Every conversion of MCU needs to pull down CS, MCU is too inefficient

    2、SPI+DMA, 5US is going to be an interrupt. It doesn't make sense

 For help:

     Is there any other way to deal with it

  • 您好,

    是的,每次需要拉低CS以启动转换;

      2、SPI+DMA, 5US is going to be an interrupt. It doesn't make sense

    8-channel collection rate is 1ms,每个sample的时间是125us,也就是8KSPS的采样速率。

    您是打算用DMA的方式来读取转换数据吗?5us这里是什么意思?