半导体学报2012，Vol.33Issue(2)：82-86,5.DOI:10.1088/1674-4926/33/2/025005
A 65-nm low-noise low-cost ∑ △ modulator for audio applications
A 65-nm low-noise low-cost ∑ △ modulator for audio applications
摘要
Abstract
This paper introduces a low-noise low-cost ∑ △ modulator for digital audio analog-to-digital conversion.By adopting a low-noise large-output swing operation amplifier,not only is the flicker noise greatly inhibited,but also the power consumption is reduced.Also the area cost is relatively small.The modulator was implemented in a SMIC standard 65-nm CMOS process.Measurement results show it can achieve 96 dB peak signal-to-noise plus distortion ratio (SNDR) and 105 dB dynamic range (DR) over the 22.05-kHz audio band and occupies 0.16 mm2.The power consumption of the proposed modulator is 4.9 mW from a 2.5 V power supply,which is suitable for high-performance,low-cost audio codec applications.关键词
∑△ modulator/ low-noise/ low-cost/ analog-to-digital converterKey words
∑△ modulator/ low-noise/ low-cost/ analog-to-digital converter引用本文复制引用
梁国,廖璐,罗豪,刘晓鹏,韩晓霞,韩雁..A 65-nm low-noise low-cost ∑ △ modulator for audio applications[J].半导体学报,2012,33(2):82-86,5.基金项目
Project supported by the PhD Programs Foundation of Ministry of Education of China (No.20100101110063) and the Incubation Programs of Innovation & Carve out of Zhejiang Province,China. （No.20100101110063）
