A 12-bit 1MSps SAR ADC with High ENOB

摘要

In this paper, we present a 12-bit lMSps SAR ADC (successive approximation register analog-to-digital converter) with high ENOB (effective number of bits) for SoC (system-on-chip). The proposed circuit is implemented using Magnachip/SK Hynix 0.18μm CMOS lPoly-6Metal process, and it is powered by 1.5V supply. The proposed circuit showed the highest SNDR (signal-to-noise distortion ratio) of 71.18dB and ENOB (effective bit number of bits) of 11.53-bit as compared to recently reported research results.