Pushing the Limits of kT/C Noise in Delta-Sigma Modulators

Spyridon Kalogiros; Gerardo Salgado; Colin Lyden; Kevin McCarthy; Ivan O’Connell

doi:10.1007/978-3-031-28912-5_11

Pushing the Limits of kT/C Noise in Delta-Sigma Modulators

Spyridon Kalogiros
, Gerardo Salgado
, Colin Lyden
, Kevin McCarthy
, Ivan O’Connell

Analog Devices, Inc.

Research output: Chapter in Book/Report/Conference proceedings › Chapter › peer-review

Abstract

Thermal noise, which is sampled and aliases in-band in discrete-time systems, limits the achievable performance of switched-capacitor noise-shaping Analog-to-Digital Converters (ADCs). While the performance of such ADCs has advanced significantly over the last 20 years, as quantified by the Schreier figure of merit (FoMS), the theoretical limit of 192 dB remains unchallenged. Over that period, the envelope of ADC performance has advanced from a FoMS of 163 dB, 20 years ago, to 186 dB today, with a rate of advancement, corresponding to ADC performance, which is doubling every 1.6 years. However, this rate of advancement has started to slow in recent years. This chapter will review some of the recent advancements in relation to reducing the thermal noise in switched-capacitor Delta-Sigma Modulators. In addition, this chapter will address many of the challenges associated with breaking the 192 dB FoMS performance barrier.

Original language	English
Title of host publication	Biomedical Electronics, Noise Shaping ADCs, and Frequency References
Subtitle of host publication	Advances in Analog Circuit Design 2022
Publisher	Springer International Publishing
Pages	203-223
Number of pages	21
ISBN (Electronic)	9783031289125
ISBN (Print)	9783031289118
DOIs	https://doi.org/10.1007/978-3-031-28912-5_11
Publication status	Published - 1 Jan 2023

Keywords

Capacitive-Gain Amplifier (CGA)
DAC
Delta-Sigma Modulator
Discrete-Time
Figure-of-Merit (FoM)
kT/C noise
kT/C noise cancellation
Loop filter
Noise Transfer Function (NTF)
Oversampling
Signal Transfer Function (STF)
Switched-Capacitor
Thermal noise

Access to Document

10.1007/978-3-031-28912-5_11

Cite this

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abstract = "Thermal noise, which is sampled and aliases in-band in discrete-time systems, limits the achievable performance of switched-capacitor noise-shaping Analog-to-Digital Converters (ADCs). While the performance of such ADCs has advanced significantly over the last 20 years, as quantified by the Schreier figure of merit (FoMS), the theoretical limit of 192 dB remains unchallenged. Over that period, the envelope of ADC performance has advanced from a FoMS of 163 dB, 20 years ago, to 186 dB today, with a rate of advancement, corresponding to ADC performance, which is doubling every 1.6 years. However, this rate of advancement has started to slow in recent years. This chapter will review some of the recent advancements in relation to reducing the thermal noise in switched-capacitor Delta-Sigma Modulators. In addition, this chapter will address many of the challenges associated with breaking the 192 dB FoMS performance barrier.",

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Pushing the Limits of kT/C Noise in Delta-Sigma Modulators. / Kalogiros, Spyridon; Salgado, Gerardo; Lyden, Colin et al.
Biomedical Electronics, Noise Shaping ADCs, and Frequency References: Advances in Analog Circuit Design 2022. Springer International Publishing, 2023. p. 203-223.

Research output: Chapter in Book/Report/Conference proceedings › Chapter › peer-review

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ER -

Pushing the Limits of kT/C Noise in Delta-Sigma Modulators

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Keywords

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