A low voltage wide-input-range bulk-input CMOS OTA

被引：32

作者：

Grech, I ^{[1
]}

Micallef, J ^{[1
]}

Azzopardi, G ^{[1
]}

Debono, CJ ^{[1
]}

机构：

[1] Univ Malta, Dept Microelectron, Msida, Malta

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2005年 / 43卷 / 02期

关键词：

low voltage; bulk-input; OTA; CMOS design;

D O I：

10.1007/s10470-005-6786-1

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The G(m)-C technique is extensively used for continuous-time filtering applications because it results in tunable, wideband and compact designs. In this paper, an OTA architecture using a novel bulk-input differential pair without the use of a tail current source is proposed. Good CMRR is still achieved by using the gate terminal to control the total current in the differential pair, via the use of a dummy pair. The OTA also exhibits a wide differential input range and good G(m)-tunability. For this design, two standard double-poly double-metal CMOS processes were investigated: a 0.8 μ m process having a nominal threshold voltage of around 0.7 V and a 0.35 μ m process having a nominal threshold voltage of 0.5 V. Simulation results are presented for both designs while test results are presented, for the OTA, implemented using the 0.8 μ m process, used in a second order cochlea low-pass filter.

引用

页码：127 / 136

页数：10

共 5 条

[1] Designing 1-V OP amps using standard digital CMOS technology [J].

Blalock, BJ ;

Allen, PE ;

Rincon-Mora, GA .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1998, 45 (07) :769-780

[2]

Lasanen K, 2000, PROCEEDINGS OF THE 43RD IEEE MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS I-III, P1038, DOI 10.1109/MWSCAS.2000.951394

[3] A low-power wide-linear-range transconductance amplifier [J].

Sarpeshkar, R ;

Lyon, RF ;

Mead, C .

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 1997, 13 (1-2) :123-151

[4] IMPROVED IMPLEMENTATION OF THE SILICON COCHLEA [J].

WATTS, L ;

KERNS, DA ;

LYON, RF ;

MEAD, CA .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (05) :692-700

[5]

Yan SL, 2000, IEICE T FUND ELECTR, VE83A, P179

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