Mismatch-tolerant distributed photonic analog-to-digital conversion using spatial oversampling and spectral noise shaping

2002 ◽  
Vol 41 (7) ◽  
pp. 1674
Author(s):  
Pankaj K. Das
Keyword(s):  
Noise Shaping ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion

A RE-CONFIGURABLE ARCHITECTURE FOR SWITCHED CAPACITOR SIGMA-DELTA ANALOG-TO-DIGITAL CONVERSION

2013 ◽  
Vol 22 (09) ◽  
pp. 1340012
Author(s):  
KAREN WAN ◽  
GIGI CHAN ◽  
WILLIAM WONG ◽  
KAM CHUEN WAN ◽  
BRYCE YAU ◽  
...  
Keyword(s):  
Fourth Order ◽  
Cmos Technology ◽  
Second Order ◽  
Switched Capacitor ◽  
Noise Shaping ◽  
Digital Conversion ◽  
Sigma Delta Modulator ◽  
Sigma Delta ◽  
Analog To Digital ◽  
Analog To Digital Conversion

A re-configurable switched capacitor sigma-delta analog-to-digital conversion architecture1,2 is proposed. The architecture consists of a MASH sigma delta modulator with nth lower-order (first- or second-order) loops cascaded together. Each loop can be powered on or off operating in high or low performance mode, according to application needs. The architecture can be configured to optimize performance and power consumption for specific resolution and applications. The architecture is proven by means of a prototype, implemented as a fourth-order and fabricated in a standard 0.18 um CMOS technology. The outputs of both high performance mode (fourth-order) and medium performance mode (second-order, first loop ON) are measured to demonstrate the configurability. The FFT demonstrates that the noise shaping for the fourth-order modulator is better than that of the second-order modulator with steeper noise shaping slope.

scholarly journals A 8X Oversampling Ratio, 14bit, 5-MSamples/s Cascade 3-1 Sigma-delta Modulator

2005 ◽  
Vol 3 ◽  
pp. 277-280
Author(s):  
Y. Yin ◽  
H. Klar ◽  
P. Wennekers
Keyword(s):  
Noise Shaping ◽  
Digital Conversion ◽  
Sigma Delta Modulator ◽  
Sigma Delta ◽  
Analog To Digital ◽  
High Frequencies ◽  
Analog To Digital Conversion ◽  
Sigma Delta Adc ◽  
Oversampling Ratio ◽  
Ic Technology

Abstract. A 14-b, 5-MHz output-rate cascaded 3-1 sigma-delta analog-to-digital converters (ADC) has been developed for broadband communication applications, and a novel 4th-order noise-shaping is obtained by using the proposed architecture. At a low oversampling ratio (OSR) of 8, the ADC achieves 91.5dB signal-to-quantization ratio (SQNR), in contrast to 71.8dB of traditional 2-1-1 cascaded sigma-delta ADC in 2.5-MHz bandwidth and over 80dB signal-to-noise and distortion (SINAD) even under assumptions of awful circuit non-idealities and opamp non-linearity. The proposed architecture can potentially operates at much more high frequencies with scaled IC technology, to expand the analog-to-digital conversion rate for high-resolution applications.

Energy Harvesting via Analog-to-Digital Conversion

2021 ◽  
Author(s):  
Neha Jain ◽  
Nir Shlezinger ◽  
Yonina C. Eldar ◽  
Anubha Gupta ◽  
Vivek Ashok Bohara
Keyword(s):  
Energy Harvesting ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion

Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

2021 ◽  
Vol 32 (3) ◽  
Author(s):  
Ruo-Shi Dong ◽  
Lei Zhao ◽  
Jia-Jun Qin ◽  
Wen-Tao Zhong ◽  
Yi-Chun Fan ◽  
...  
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion ◽  
Conversion System ◽  
Time Interleaved

scholarly journals How to Control Errors in Analog-To-Digital Conversion

1993 ◽  
Vol 7 (4) ◽  
pp. 408 ◽  
Author(s):  
James R. Matey ◽  
M.J. Lauterbach
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion

1550 nm mode-locked semiconductor lasers for all-optical analog-to-digital conversion

2017 ◽  
Author(s):  
Evgenii S. Kolodeznyi ◽  
Innokenty I. Novikov ◽  
Andrey V. Babichev ◽  
Alexander S. Kurochkin ◽  
Andrey G. Gladyshev ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion ◽  
All Optical ◽  
Optical Analog

scholarly journals Photonic analog-to-digital conversion based on time-to-frequency mapping

2021 ◽  
pp. 127440
Author(s):  
Hao Chi ◽  
Qiulin Zhang ◽  
Shuna Yang ◽  
Bo Yang ◽  
Yanrong Zhai ◽  
...  
Keyword(s):  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion
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