【Cosplay】缘之空 双马尾

碎碎念：

DIFFERENTIAL NONLINEARITY (DNL)
微分非线性
A specification which guarantees no missing codes requires that every code combination appear in a monotonic increasing sequence as the analog input level is increased.
保证无失码就是随着输入电平的增加，输出的码组合的出现是单调增加的。
Thus every code must have a finite width.
因此每个码必须有一个限定的宽度。
The AD1674 guarantees no missing codes to 12-bit resolution; all 4096 codes are present over the
entire operating range.
AD1674是保证无失码的。