ADS1256复位时(RESET引脚为低电平),时DRDY引脚的电平?
时间:10-02
整理:3721RD
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ADS1256复位时(RESET引脚为低电平),时DRDY引脚的电平值应该是多少?
手册上有这么一句话 (SBAS288K − JUNE 2003 − REVISED SEPTEMBER 2013) P27
Exiting from Reset, Synchronization, Standby or Power-Down mode will also force DRDY high. DRDY will go low as soon as valid data are ready.
由此推断应该是高电平.
那就应该是DVDD,我用的DVDD是三伏,但是复位时(RESET引脚为低电平时)测得的DRDY只有300毫伏左右,请问是什么原因呢?