1V CMOS Gm-C Filters

by Lo, Tien-yu; Hung, Chung-chih

• ISBN13: 9789048124091
• ISBN10: 9048124093
• Format: Hardcover
• Copyright: 2009-05-01
• Publisher: Springer Verlag

Summary

1V CMOS Gm-C Filters: Design and Applications discusses the design aspects of transconductor and Gm-C filter circuits, with a special focus on 1V circuit implementations. The emphasis is on high linearity voltage-to-current blocks for wireless and wireline applications, and the designs cover up to very high speed specifications.1V CMOS Gm-C Filters: Design and Applications provides a clear introduction of low voltage architectures and yields insight into the influence of circuit non-idealities. The fully CMOS implementation could be useful for wireless and wireline applications. The basic design concepts can be easily constructed through the illustration of this book. This book can be provided for engineers and researchers who are interested in the transconductor and Gm-C filter. It is also a good reference for the course related to analog integrated circuit design.

Author Biography

Tien-Yu Lo received the B.S., M.S., and Ph.D. degrees in Communication Engineering from National Chiao Tung University, Taiwan, in 2001, 2003 and 2007, respectively. Since 2008, he has been with the Analog Circuit Design Division, MediaTek Inc., Taiwan, as an analog IC designer. His research interests include analog and mix-signal circuit design with particular focus on the topic of continuous-time filters and analog-to-digital converters. Chung-Chih Hung received the B.S. degree in Electrical Engineering from National Taiwan University, Taipei, Taiwan, in 1989, and the M.S. and Ph.D. degrees in electrical engineering from The Ohio State University, Columbus, in 1993 and 1997, respectively. From 1989 to 1991, he served in the Taiwan Marine Corps as a communication officer. From 1997 to 2003, he worked for several IC design companies in San Jose, CA, and San Diego, CA, where he held analog circuit design manager and director positions. Since 2003, he has been with the Department of Communication Engineering, National Chiao Tung University, Taiwan, where he is currently an Associate Professor. His research interests include the design of analog and mixed-signal integrated circuits for communication and high-speed applications.

Table of Contents

List of Figures	p. xiii
List of Tables	p. xvii
	p. 1
Introduction	p. 1
Applications	p. 2
Organization	p. 3
Transconductor	p. 5
Introduction	p. 5
Review of CMOS Transconductors	p. 5
The Source Degenerated Transconductor	p. 5
The Constant Drain-Source Transconductor	p. 8
The Pseudo-Differential Transconductor	p. 9
The Multiple Input Floating-Gate Transconductor	p. 12
The 40 MHZ Double Differential-Pair CMOS Transconductor With -60 DB IM3	p. 14
Introduction	p. 14
Nonlinearity Analysis of Saturated MOS Transistors	p. 14
Proposed Transconductor Circuit	p. 20
Non-Ideality Analysis of the Implementation	p. 23
Experimental Results	p. 24
Summary	p. 27
Analysis for Circuit at 1-V Supply	p. 28
A 50 MHZ Pseudo-Differential Transconductor With Mobility Reduction Compensation	p. 29
Introduction	p. 29
The Proposed Transconductor Cell	p. 29
Experimental Results	p. 35
Summary	p. 37
Linear CMOS Transconductor in Nano-Scale CMOS Technology	p. 37
Introduction	p. 38
Operational Transconductance Amplifier	p. 39
Experimental Results	p. 43
Summary	p. 46
Gm-C Filter	p. 47
Introduction	p. 47
Implementation of the Gm-C Filter	p. 47
Integrator	p. 47
Programmable Integrator	p. 50
Filter Synthesis Methods	p. 51
Effect of Integrator Non-Idealities in Filter	p. 57
A Wide Tuning Range Gm-C Continuous-Time Analog Filter	p. 65
Introduction	p. 66
The Proposed Transconductor Cell	p. 67
The Equivalent Resistor REQ	p. 73
Filter Architecture	p. 78
Experimental Results	p. 79
Summary	p. 86
Analysis for Circuit at 1-V Supply	p. 86
Multi-mode Channel Selection Filter for Wireless Application	p. 89
Introduction	p. 89
Zero-IF Receiver	p. 89
A Gm-C Continuous-Time Analog Filter for Multi-mode Wireless Applications	p. 90
Introduction	p. 90
Proposed Transconductor Circuit	p. 91
The Equivalent Resistor and the CMFB Circuit	p. 92
Filter Architecture	p. 95
Results	p. 96
Summary	p. 97
Analysis for Circuit at 1-V Supply	p. 98
Multi-Mode Gm-C Channel Selection Filter for Mobile Applications	p. 98
Introduction	p. 99
The Proposed Transconductor Circuit	p. 100
Filter Architecture and Measurement Result	p. 105
Summary	p. 108
A Wide Tuning Range Gm-C Filter for Multi-mode Direct-Conversion Wireless Receivers	p. 108
Introduction	p. 108
The Proposed Transconductor Circuit	p. 109
Filter Architecture and Measurement Results	p. 116
Summary	p. 119
Analysis for Circuit at 1-V Supply	p. 120
High Speed Filter with Automatic Tuning Circuit	p. 123
Introduction	p. 123
Linear Phase Filter	p. 123
Filter Transfer Function	p. 124
Group Delay Sensitivity	p. 125
Automatic Tuning Circuit	p. 126
Direct Tuning Architecture	p. 127
Indirect Tuning Architecture	p. 127
A 1 GHZ Equiripple Low-Pass Filter with a High-Speed Automatic Tuning Scheme	p. 130
Introduction	p. 130
Operational Transconductance Amplifier	p. 131
Filter Architecture and Automatic Tuning Circuit	p. 135
Measurement Results	p. 137
Summary	p. 139
Analysis for Circuit at 1-V Supply	p. 140
A Gm-C Low-Pass Filter for UWB Wireless Application	p. 141
Introduction	p. 142
Proposed Operational Transconductance Amplifier	p. 142
Common-Mode Control Circuit	p. 145
Filter Implementation and Measurement Results	p. 146
Summary	p. 148
Conclusions	p. 151
References	p. 153
About the Authors	p. 157
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