부산대학교 도서관

This paper presents a dynamic zoom analog-to-digital converter for use in low-bandwidth ( $\Delta \Sigma$ ADC. Compared to previous zoom ADCs, faster reference updates relax the loop filter requirements, thus allowing the adoption of energy-efficient amplifiers. Fabricated in a 0.16- $\mu \text{m}$ CMOS process, the prototype occupies 0.26 mm 2 and achieves 119.1-dB peak signal-to-noise ratio (SNR), 118.1-dB peak signal-to-noise-and-distortion-ratio (SNDR), and 120.3-dB dynamic range (DR) in a 1-kHz bandwidth while consuming 280 $\mu \text{W}$ . This results in a Schreier figure of merit (FoM) of 185.8 dB.