What is charge redistribution?

[seriously disabled]

In digital-to-analog converters, what is charge redistribution? Does it have something to do with switched capacitors?

[montyhar2]

Analog-to-digital converters targeted for use in medical implant devices serve an important role as the interface between analog signal and digital processing system. Usually, low power consumption is required for a long battery lifetime.In such application which requires low power consumption and moderate speed and resolution, one of the most prevalently used ADC architectures is the successive approximation register ADC.This thesis presents a design of an ultra-low power 9-bit SAR ADC in 0.13?m CMOS technology. Based on a literature review of SAR ADC design, the proposed SAR ADC combines a capacitive DAC with S/H circuit,uses a binary-weighted capacitor array for the DAC and utilises a dynamic latch comparator. Evaluation results show that at a supply voltage of 1.2V and an output rate of 1kS/s, the SAR ADC performs a total power consumption of 103nW and a signal-to-noise-and-distortion ratio of 54.4dB. Proper performance is achieved down to a supply voltage of 0.45V, with a power consumption of 16nW.Thanks.