A fully-differential zero-crossing-based 1.2V 10b 26MS/s pipelined ADC in 65nm CMOS

A fully-differential zero-crossing-based 10b 26MS/s pipelined ADC in a 65 nm CMOS process is presented. Switched-capacitor overshoot correction is compatible with the differential topology and allows faster operation. A CMFB is engaged in the coarse phase for constant common-mode. The 0.33mm
²
ADC achieves 54.3dB SNDR with a FOM of 161fJ/step.