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When the PGA is disabled, the device uses a buffered switched-capacitor stage to obtain gains 1, 2, and 4.
这是手册里的一段话
开关电容缓冲 产生增益？
字面意思看是这样. 可以找手册的相关章节仔细研究一下.
请问是哪个芯片呢？看起来是用电容来维持增益的
ads1220
确实是用开关电容产生增益的。不过手册里没有相关的电路资料
您在用ADS1220，是不是可以交流一下。
