Switching energy comparison: The proposed scheme reduces the switching energy by 93.7% and area by 75% while eliminating the third reference voltage, lowering the complexity of the DAC control logic and reducing the number of switches to implement the DAC scheme. TableĀ 1 summarizes the results and compare the proposed scheme with the state of the art. The proposed scheme provides good energy reduction while having nearly constant common-mode voltage and eliminating the third reference voltage during the entire switching scheme which relaxes the driven ability of VREF. In addition, the bottom plate sampling method is used to eliminate the non-linearity effects coming from the input switches and parasitic. Thanks to the novel technique called as input-swapping, the VCM and VREFswitches are connected to DACP and DACNand the charge injection due to these switches only cause static errors which can be corrected by simple correction algorithms.
Table 1. Comparison of the proposed method with published techniques for 10-bit resolution