A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors

Choi Joongho; Lim Jinup; Chew Lim Cheng

A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors

Choi Joongho, Lim Jinup, Chew Lim Cheng

School of Electrical and Computer Engineering

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

Abstract

This paper presents the design of a low-voltage operational amplifier suitable for sigma-delta (∑Δ) modulator applications. The circuit technique is proposed to enhance the slew-rate performance and correspondingly can help to save the power of the amplifier. The simple circuitry of a current mirror is included with a degenerate resistor that can be selectively shunted. High-speed 2^nd-order ∑Δ modulators incorporating this technique is designed in a 0.18-μm CMOS technology and power consumption can be saved more than 20% for a power supply voltage of 1.2V.

Original language	English
Title of host publication	ISCAS 2006
Subtitle of host publication	2006 IEEE International Symposium on Circuits and Systems, Proceedings
Pages	903-906
Number of pages	4
State	Published - 2006
Event	ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece Duration: 21 May 2006 → 24 May 2006

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)	0271-4310

Conference

Conference	ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems
Country/Territory	Greece
City	Kos
Period	21/05/06 → 24/05/06

Cite this

@inproceedings{08044bd8af24476fb1d9355d80f2aa8f,

title = "A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors",

abstract = "This paper presents the design of a low-voltage operational amplifier suitable for sigma-delta (∑Δ) modulator applications. The circuit technique is proposed to enhance the slew-rate performance and correspondingly can help to save the power of the amplifier. The simple circuitry of a current mirror is included with a degenerate resistor that can be selectively shunted. High-speed 2nd-order ∑Δ modulators incorporating this technique is designed in a 0.18-μm CMOS technology and power consumption can be saved more than 20% for a power supply voltage of 1.2V.",

author = "Choi Joongho and Lim Jinup and Cheng, {Chew Lim}",

year = "2006",

language = "English",

isbn = "0780393902",

series = "Proceedings - IEEE International Symposium on Circuits and Systems",

pages = "903--906",

booktitle = "ISCAS 2006",

note = "ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems ; Conference date: 21-05-2006 Through 24-05-2006",

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Joongho, C, Jinup, L & Cheng, CL 2006, A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors. in ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Proceedings., 1692732, Proceedings - IEEE International Symposium on Circuits and Systems, pp. 903-906, ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Kos, Greece, 21/05/06.

A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors. / Joongho, Choi; Jinup, Lim; Cheng, Chew Lim.
ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Proceedings. 2006. p. 903-906 1692732 (Proceedings - IEEE International Symposium on Circuits and Systems).

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

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AU - Joongho, Choi

AU - Jinup, Lim

AU - Cheng, Chew Lim

PY - 2006

Y1 - 2006

N2 - This paper presents the design of a low-voltage operational amplifier suitable for sigma-delta (∑Δ) modulator applications. The circuit technique is proposed to enhance the slew-rate performance and correspondingly can help to save the power of the amplifier. The simple circuitry of a current mirror is included with a degenerate resistor that can be selectively shunted. High-speed 2nd-order ∑Δ modulators incorporating this technique is designed in a 0.18-μm CMOS technology and power consumption can be saved more than 20% for a power supply voltage of 1.2V.

AB - This paper presents the design of a low-voltage operational amplifier suitable for sigma-delta (∑Δ) modulator applications. The circuit technique is proposed to enhance the slew-rate performance and correspondingly can help to save the power of the amplifier. The simple circuitry of a current mirror is included with a degenerate resistor that can be selectively shunted. High-speed 2nd-order ∑Δ modulators incorporating this technique is designed in a 0.18-μm CMOS technology and power consumption can be saved more than 20% for a power supply voltage of 1.2V.

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M3 - Conference contribution

AN - SCOPUS:34547337705

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SN - 9780780393905

T3 - Proceedings - IEEE International Symposium on Circuits and Systems

SP - 903

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BT - ISCAS 2006

T2 - ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems

Y2 - 21 May 2006 through 24 May 2006

ER -

A low-voltage operational amplifier with high slew-rate for sigma-delta modualtors

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