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ADS1282增益校准时，需要外部提供和增益匹配的满量程电压，这个电压可以由DAC1282提供。我想问的是：
1.DAC1282的正弦波模式有是没用处？
2.采用哪种模式提供电压最好？
为什么不是采用基准电压来进行校准呢? DAC 的输出也受环境和阻抗等影响
