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ADS8638: HVDD和HVSS供电问题

Part Number: ADS8638

该芯片描述HVDD和HVSS最大供电电压分别不能超过+15V个-15V。考虑用15V开关电源给其供电,开关电源的电压精度是正负2%,也就是0.3V的偏差,这个会对芯片的寿命有影响吗?