29.2 A 235mW CT 0-3 MASH ADC achieving −167dBFS/Hz NSD with 53MHz BW

Author

Yunzhi Dong ; Schreier, Richard ; Wenhua Yang ; Korrapati, Sudhir ; Sheikholeslami, Ali

Author_Institution

Analog Devices, Toronto, ON, Canada

fYear

2014

fDate

9-13 Feb. 2014

Firstpage

480

Lastpage

481

Abstract

The trend for ADCs in wireless communication infrastructure is increased bandwidth with little or no relaxation in noise density or power consumption. The historical expectation of system designers is a noise spectral density (NSD) of -157dBFS/Hz with a power consumption of 0.5W. This expectation is a difficult one to meet with existing ADC architectures when the system bandwidth is 100MHz as demanded by standards such as LTE-A. The 0-3 continuous-time (CT) MASH [1-2] ADC described in this paper allows a direct-conversion receiver with the requisite bandwidth to be constructed, with 10dB lower noise than established benchmarks.

Keywords

analogue-digital conversion; continuous time systems; radio receivers; ADC architecture; CT 0-3 MASH ADC; LTE-A; bandwidth 100 MHz; continuous-time ADC; direct-conversion receiver; gain 10 dB; noise density; noise spectral density; power 0.5 W; power consumption; wireless communication infrastructure; Bandwidth; Clocks; Computed tomography; Gain; Modulation; Multi-stage noise shaping; Noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

978-1-4799-0918-6

Type

conf

DOI

10.1109/ISSCC.2014.6757521

Filename

6757521