Title
A 12-bit 50-MSPS SHA-less opamp-sharing Analog-to-Digital converter in 65nm CMOS
Abstract
This paper presents a 12-bit 50-MSPS pipelined Analog-to-Digital converter (ADC) in a 65-nm 1P7M CMOS process. A hybrid time-sharing architecture without Sample-and-Hold Amplifier (SHA) is employed to make a trade-off between the performance and power consumption of the ADC. An SHA-less front-end is adopted, including a matched sampling network to considerably reduce aperture error between a 2.5-bit Multiplying Digital-to-Analog Converter (MDAC) and a Sub-Analog-to-Digital converter (SUBADC). Some efforts to optimize operational amplifier (opamp) are also made. Simulation results show that the ADC achieves 83.2-dB SFDR and 73.4-dB SNDR for input signal up to Nyquist range. The ADC consumes 26.6mW at sampling rate of 50MHz from 1.2-V supply voltage.
Year
DOI
Venue
2011
10.1109/ASICON.2011.6157349
ASICON
Keywords
Field
DocType
cmos process,cmos integrated circuits,analogue-digital conversion,multiplying digital-to-analog converter,voltage 1.2 v,operational amplifier,operational amplifiers,sha,size 16 nm,opamp,sample-and-hold amplifier,sub-analog-to-digital converter,subadc,msps pipelined analog-to-digital converter,frequency 50 mhz,mdac,sample and hold circuits,word length 12 bit,front end,switches,logic gates,logic gate,capacitance,time sharing
Computer science,Sampling (signal processing),Effective number of bits,Electronic engineering,Analog-to-digital converter,CMOS,Successive approximation ADC,Operational amplifier,Integrating ADC,Amplifier
Conference
Volume
Issue
ISSN
null
null
2162-7541 E-ISBN : 978-1-61284-191-5
ISBN
Citations 
PageRank 
978-1-61284-191-5
0
0.34
References 
Authors
4
5
Name
Order
Citations
PageRank
Chen Shu100.34
Guanghua Shu2579.11
Jun Xu301.69
Fan Ye43421.14
Junyan Ren515441.40