A/D example - (MSB-1)
Compare after shifting another part of cap. to VH
- VI goes up by + 4/16 (VH-VI) - 4/16 (VL-VI) = + 4/16 (VH - VL)
- original VL - VI goes down and becomes
- VL - ( VI + .25 (VH - VL) ) = VL - VI - .25 (VH - VL)
Output < 0 (went too far)