upvl
Junior Member level 3
Hi, I'm currently working on a 10b sar adc with low speed. I use the attenuation cap in the 10b cap dac to decrease the chip size, but I'm kinda worried about the match of the unity cap and the attenuation cap, which is 32/31 of the unity cap. Actually, I don't really have to achieve 10b ENOB, so I'm OK to lose about 1-bit dynamic range. So, without calibration, can this 10b sar adc achieve 9b ENOB? Thanks.