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ADS5296A Programmable Digital Gain

Other Parts Discussed in Thread: ADS5296A

您好!关于ADS5296A 芯片,我在数据手册上看到它具有Digital Processing Block,可以Programmable Digital Gain: 0 dB to 12 dB,我想问一下,这里说的数字增益指的是什么?比如说数字增益为2,难道就是直接把ADC转换数据直接乘2?如果是这样,为什么需要这个功能,因为我可以读取ADC数据,自己对数据乘2 。还是我数字增益理解错了。。。