R2RDAC +BUFFER设计的系统考虑

净月

请问大家针对这个问题有更全面，系统的考虑吗？
给一个R2R DAC做输出Buffer，如fs=1M,RL=5K,CL=50pF,该怎么定buffer的指标,或者设计之初系统（DAC+BUFFER）的考虑
谢谢

icdane

1. settling accuracy
2. slewing
3. linear settling.
check when your DAC has the largest step at the output: check the slewing phase, linear settling phase and final settling accuracy to define your buffer's speed.
the rest will be noise, offset, etc.....