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求AD芯片介绍，最好是串口、12位，1MS的采样频率，支持spi协议，4线spi通信，需要使用stm32编程，所以数据输入和输出在一起很麻烦，最好是8脚的谢谢
可选的器件还是比较多的 建议楼主到官网 AD 器件页面筛选查找吧
http://www.ti.com.cn/lsds/ti_zh/data-converters/precision-adc-less-10msps-products.page
