DAC寄生电容的问题

Depends on the total current consumption of the DAC, the operating voltage, and the operating clock rate.
The additional current caused by the additional capacitance
delta I = C (delta V / T)
不能一槪而论

这个和DAC的结构有关，如果是differential的DAC，基本没什么影响，如果是single-end的DAC，会对gain error和offset有影响，不过一般影响不大，看具体应用了