Other Parts Discussed in Thread: ADS1294
复位后ADS1294的DRDY与START引脚自动输出大量异常波形
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您好,
如果区分数据地和模拟地的话,VCAP1、VCAP2、VCAP3、VCAP4应该对模拟地接电容;
数字地和模拟地要共电位,即需要单点连接,请确认这一点;
START是输入管脚,不应该输出波形,请检查下是否为主控端输出的波形?
DRDY在START pin为高电平时,复位后会输出默认data rate频率的脉冲波形。但是现在START异常,建议先解决START异常问题后,再对DRDY 信号异常进行分析。
建议您按照下面链接步骤检查ADS1294: