SNDR in Current Steering DAC

lvbenqiang123 · 发表于 2013-10-8 21:03:03

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Hi all ,

Resently I have simulated the SNDR of a 12b Current sterring DAC ,but it is only 54dB, thus the enob is 9bit . Simulation by Cadence without mc model.

So, I'm very confused why the DAC's SNDR was so bad ?

Can anyone give me some help?

By the way, How to tradoff the transistors' size of current source for the Statics and Dynamic performance ?

Best regards!
lvbq