High-frequency two-input CMOS OTA for continuous-time filter applications

被引：28

作者：

Glinianowicz, J ^{[1
]}

Jakusz, J

Szczepanski, S

Sun, Y

机构：

[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, PL-80952 Gdansk, Poland

[2] Univ Hertfordshire, Dept Elect Commun & Elect Engn, Hatfield AL10 9AB, Herts, England

来源：

IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS | 2000年 / 147卷 / 01期

关键词：

D O I：

10.1049/ip-cds:20000317

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A high-frequency fully differential CMOS operational transconductance amplifier (OTA) is presented for continuous-time filter applications in the megahertz range. The proposed design technique combines a linear cross-coupled quad input stage with an enhanced folded-cascode circuit to increase the output resistance of the amplifier. SPICE simulations show that DC-gain enhancement can be obtained without significant bandwidth limitation. The two-input OTA developed is used in high-frequency tuneable filter design based on IFLF and LC ladder simulation structures. Simulated results of parameters and characteristics of the OTA and filters in a standard 1.2 mu m CMOS process (MOSIS) are presented. A tuning circuit is also discussed.

引用

页码：13 / 18

页数：6

共 15 条

[1] TUNABLE BICMOS CONTINUOUS-TIME FILTER FOR HIGH-FREQUENCY APPLICATIONS [J].

ALINI, R ;

BASCHIROTTO, A ;

CASTELLO, R .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (12) :1905-1915

[2]

CHIANG DH, 1996, P IEEE INT S CIRC SY, V1, P167

[3]

Deliyannis T., 1999, ELEC ENG SY

[4]

NAUTA B, 1993, ANALOG CMOS FILTERS

[5]

Pankiewicz B, 1998, SPRING INT SER ENG C, P35

[6] A HIGH-SWING, HIGH-IMPEDANCE MOS CASCODE CIRCUIT [J].

SACKINGER, E ;

GUGGENBUHL, W .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1990, 25 (01) :289-298

[7] A 10.7-MHZ 68-DB SNR CMOS CONTINUOUS-TIME FILTER WITH ON-CHIP AUTOMATIC TUNING [J].

SILVAMARTINEZ, J ;

STEYAERT, MSJ ;

SANSEN, W .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (12) :1843-1853

[8] POWER-SUPPLY REJECTION RATIO IN OPERATIONAL TRANSCONDUCTANCE AMPLIFIERS [J].

STEYAERT, MSJ ;

SANSEN, WMC .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, 1990, 37 (09) :1077-1084

[9] OTA-C REALIZATION OF GENERAL HIGH-ORDER TRANSFER-FUNCTIONS [J].

SUN, Y ;

FIDLER, JK .

ELECTRONICS LETTERS, 1993, 29 (12) :1057-1058

[10] Synthesis and performance analysis of universal minimum component integrator-based IFLF OTA-grounded capacitor filter [J].

Sun, Y ;

Fidler, JK .

IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS, 1996, 143 (02) :107-114

← 1 2 →