2019 International Conference on Opto-Electronics and Applied Optics (Optronix) | 2019
A 4 Bit Combinational Hybrid-Junction Splitting Technique for Realization of an Energy Efficient SC SAR ADC
Abstract
A novel technique that combines the advantageous features of hybrid and junction splitting technique is presented for realization of a very high energy efficient SC SAR ADC. The hybrid capacitor switching scheme is very energy efficient in which the first three comparison cycles do not consume any energy. The junction splitting technique involves appending capacitors as each bit is successively being determined by the system. The present paper combines these two features to realize an SC SAR ADC which is more energy efficient than either of the two. The method provides energy savings as well as unit capacitor saving. Thus the method becomes one of the most energy efficient switching schemes among its peers. It achieves a 50% reduction in unit capacitance requirements over the conventional one.