Effect of additive dither on the resolution of ideal quantizers

Carbone, Paolo; Petri, Dario

doi:10.1109/19.293456

Cited by 107 publications

(51 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Amplitude deviations of this size are quite common in a production environment, where deviations around 1% may occur, yielding a deviation of more than one and a half quantization step in a 6-bit converter [3]. The present-day solution to this sensitivity problem is noise dithering [1]. But this technique has several drawbacks, in particular the relatively high number of samples required to achieve a significant reduction of the sensibility of the THD and the influence of the noise dither on the SINAD parameter.…”

Section: Influence Of the Input Signal Amplitudementioning

confidence: 99%

“…The total variation observed in this case appears quite important but much more predictable. For instance considering an input signal with a peakto-peak amplitude 2 LSB higher than FS, a deviation of ±0.1 LSB in the amplitude results in a variation of about 0.4 dB in the SINAD, 0.7 dB in the SFDR and 0.8 dB in the TDH [1][2][3][4][5] , corresponding to relative accuracy of 1.3%, 2% and 2.2% respectively. The relative accuracy for a given amplitude deviation around a nominal point is therefore greatly improved by the use of an input signal with an amplitude higher than full scale, even if measured values do not directly represent the ADC performances.…”

Section: Influence Of the Input Signal Amplitudementioning

confidence: 99%

See 1 more Smart Citation

Correlation Between Static and Dynamic Parameters of A-to-D Converters: In the View of a Unique Test Procedure

Azaïs

Bernard

Bertrand

et al. 2004

Journal of Electronic Testing

View full text Add to dashboard Cite

Abstract. ADCs are fully characterized by both static and dynamic parameters. Testing methods usually combine a histogram-based approach with a spectral analysis to determine the complete set of ADCs parameters. In the view of a unique test procedure, this paper investigates the correlation between both kinds of parameters. Experimental results demonstrate that under appropriate test conditions, the dynamic parameters extracted from a classical FFT exhibit significant variations against ADC offset, gain and non-linearity errors, opening the way of a low-cost test strategy in the frequency domain.

show abstract

Section: Influence Of the Input Signal Amplitudementioning

confidence: 99%

Section: Influence Of the Input Signal Amplitudementioning

confidence: 99%

Correlation Between Static and Dynamic Parameters of A-to-D Converters: In the View of a Unique Test Procedure

Azaïs

Bernard

Bertrand

et al. 2004

Journal of Electronic Testing

View full text Add to dashboard Cite

show abstract

“…If the input signal is larger or smaller than 1/2, there will be an error such that the expected error of the output is nonzero. For Gaussian noise combined with a uniform quantizer with many levels, Carbone and Petri (1994) derived…”

Section: Error Statisticsmentioning

confidence: 99%

Ensemble Averaging and Resolution Enhancement of Digital Radar and Sonar Signals

Øyehaug¹,

Skartlien²

2009

Advances in Sonar Technology

View full text Add to dashboard Cite

“…establishes the same currents from M 6 and M 13 . Then no DC current will be injected into the ASCS-stage.…”

Section: Systematic Offsetmentioning

confidence: 99%

“…But dithering will increase the overall noise as well. For the interested reader, the articles [12,13,14] give more information on this topic Chapter 3…”

Section: Ditheringmentioning

confidence: 99%

Floating-point analog-to-digital converter

Yuan

Piper²

ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357)

View full text Add to dashboard Cite

To deal with the wide dynamic rage necessary for a radio receiver or corresponding applications, but to avoid impractically high resolution at high data rates, the approach of using a floating-point analog-to-digital converter (FP-ADC) has been investigated. This approach de-links the dynamic range with the resolution, and a very wide dynamic range can be achieved by an ADC with a moderate resolution.The solution for an FP-ADC presented in this thesis is to amplify the input signal in several channels using binary weighted gains. The channel output with the largest amplitude, but still within the ADC input range, will be selected for conversion. The binary weighting is obtained by dividing the input signal with passive divider and amplifying the divider outputs by identical amplifiers. The outputs from the amplifiers are sampled individually. The selected sampled signal is then converted by a pipelined ADC. The result from the selection gives the exponent and the ADC output the mantissa of the floating-point number.Issues on the specific problems of designing the proposed FP-ADC have been addressed, including a general discussion about a pipelined ADC along with its sub-blocks.A thorough investigation of the distortion in a pipelined ADC due to static mismatches and systematic errors is also presented. The result of the investigation is a general approach on how to calculate the distortion in a pipelined ADC. The distortion analyses can be performed by both analytical methods and computer simulations.A chip has been manufactured in a standard analog 0.35 µm CMOS process giving 10 bits of resolution, and a dynamic range corresponding to a 15-bit ADC. The sampling rate is 54 Ms/s using 330 mW of power. This project started when Pietro Andreani talked me into pursuing PhD studies within the Electroscience department, and to investigate an interesting problem Jiren Yuan, my supervisor, presented. While being with the department my knowledge has been deepened and broadened within the area of mixed signal design, and especially data converters.I have also had lots of fruitful discussions with my colleagues at the department. By keeping up a friendly atmosphere and a high academic ceiling, it has been fun and well worth spending so many years at the same place. Especially I would like to mention Roland Strandberg, Martin Lantz, Martin Andersson and Gang Xu who have been there to discuss everything from transistors physics to amplifier design to intricate problems in data converters. I would like to thank them for their enthusiasm and help.I would also thank Anders "J" Johansson and Lars Olsson for taking their time to check my spelling and grammar and helping me make this thesis more readable.No thesis would have been possible without the work of Erik Jonsson or Stefan Molund, who are constantly keeping the computers, network and tools up running day and night.In addition to this, I would also like to thank all other parties who have been involved in this process. I cannot mention you all by name, but I will al...

show abstract

Effect of additive dither on the resolution of ideal quantizers

Cited by 107 publications

References 5 publications

Correlation Between Static and Dynamic Parameters of A-to-D Converters: In the View of a Unique Test Procedure

Correlation Between Static and Dynamic Parameters of A-to-D Converters: In the View of a Unique Test Procedure

Ensemble Averaging and Resolution Enhancement of Digital Radar and Sonar Signals

Floating-point analog-to-digital converter

Contact Info

Product

Resources

About