An Input-buffer Embedding Dual-residue Pipelined-SAR ADC with Nonbinary Capacitive Interpolation

Pipelined-SAR ADCs have proved their capability in achieving high-speed and high-resolution with excellent energy-efficiency. The well-known design burden of residue amplifier (RA) such as power-hungry opamp or calibration complexity for inaccurate open-loop amplifier could be eliminated by the single-amplifier dual-residue pipelined architecture which requires neither accurate gain nor gain match...