Signal Folding in A/D Converters

Pan, Hui; Abidi, A.A.

doi:10.1109/tcsi.2003.821278

Cited by 51 publications

(15 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…I N MOST analog-to-digital converters (ADCs), the input analog voltage is converted into a digital code by an explicit voltage comparison [1]. However, when integrated circuit fabrication technologies (e.g., CMOS) reach the deepsubmicrometer regime, circuits that process analog voltage signals encounter scaling impediments [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Delay-Line-Based Analog-to-Digital Converters

Tousi

Hassibi

et al. 2009

IEEE Trans. Circuits Syst. II

112

View full text Add to dashboard Cite

We will introduce a design of analog-to-digital converters (ADCs) based on digital delay lines. Instead of voltage comparators, they convert the input voltage into a digital code by delay lines and are mainly built on digital blocks. This makes it compatible with process scaling. Two structures are proposed, and tradeoffs in the design are discussed. The effects of jitter and mismatch are also studied. We will present two 4-bit, 1-GS/s prototypes in 0.13-μm and 65-nm CMOS processes, which show a small area (0.015 mm 2 ) and small power consumption (< 2.4 mW).

show abstract

Section: Introductionmentioning

confidence: 99%

Delay-Line-Based Analog-to-Digital Converters

Tousi

Hassibi

et al. 2009

IEEE Trans. Circuits Syst. II

112

View full text Add to dashboard Cite

show abstract

“…The advantage of folding circuits is that they are capable of working at very high frequencies and hence ideally suited in software radio front end [13] [14]. The analog signal produced by the folding circuit is applied simultaneously across a bank of comparators.…”

Section: A Analog Preprocessing and Fb Generatingmentioning

confidence: 99%

Efficient Sample Rate Conversion in Software Radio Employing Folding Number System

Pham

Premkumar

Madhukumar

2009

2009 IEEE International Conference on Communications

View full text Add to dashboard Cite

In an ideal Software Radio, digitization of the received signal occurs immediately after receive antenna to enable channelization to be performed in the discrete time domain. However, this vision is still far from reality due to limitations of current analog to digital converter performance. In this paper, a novel number system called the Folding Number System (FNS) is proposed for use in Software Radio. We implement sample rate conversion immediately after the receive antenna using this number system thus providing an efficient solution to the above problem. By decomposing the input analog signal into separate channels in parallel, symmetrical residues are obtained with reduced number of comparators. These residues together with the folding information are processed in parallel in the FNS domain. The FNS has the same computational complexity as that in Residue Number System but the need for the intermediate steps such conversion of the analog data into binary and subsequently into residues is absent.

show abstract

“…The folded and interpolated A/D converter architecture divides the codification process in two steps performed in parallel: a coarse encoder for the most significant bits and a fine subsystem for the least significant bits [11][12][13][14]. It uses an analog preprocessing in the form of a "folding amplifier" to significantly reduce the number of comparators required to the fine subsystem with regard to a flash converter.…”

Section: Folded A/d Convertermentioning

confidence: 99%

Structural DfT Approach on Folded ADCs

Mozuelos

Lechuga

Martínez

et al. 2007

2007 14th IEEE International Conference on Electronics, Circuits and Systems

View full text Add to dashboard Cite

This paper presents a structural design for test approach for folding and interpolated analog-to-digital converters. In this methodology relative deviations between internal ADC nodes are measured to detect the presence of a fault. A behavioral model of the ADC and the DfT has been done in MATLAB/SIMULINK environment to evaluate the efficiency of the proposed test approach compared to a functional test.

show abstract

Signal Folding in A/D Converters

Cited by 51 publications

References 29 publications

Delay-Line-Based Analog-to-Digital Converters

Delay-Line-Based Analog-to-Digital Converters

Efficient Sample Rate Conversion in Software Radio Employing Folding Number System

Structural DfT Approach on Folded ADCs

Contact Info

Product

Resources

About