This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Original question:
ads1278使用一周后5v供电脚被拉低到1v多 芯片发热 重新上电后正常
您好,
“使用中来回开关机”是指来回给设备 ADS1278的AVDD, DVDD, and IOVDD三个供电端来回上下电吗?建议用示波器测量下AVDD, DVDD, and IOVDD的上电顺序,ADS1278对上电顺序有要求,见datasheet Figure 84. Start-Up Sequence
同时也看下上下电过程中,是否有脉冲超过了spec 规定的绝对最大额定电压值: