A CMOS linear tunable transconductor for continuous-time tunable Gm-C filters

被引：6
|
作者：
Sanchez-Rodriguez, T. [1 ]
Lujan-Martinez, C. I. [1 ]
Carvajal, R. G. [1 ]
Ramirez-Angulo, Jaime [3 ]
Lopez-Martin, Antonio [2 ]
机构：
[1] Univ Seville, Escuela Super Ingn, Camino Descubrimientos S-N, Seville 41092, Spain
[2] Univ Publica de Navarra, Dpto Ingn Elect, Pamplona 41007, Spain
[3] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA
来源：
PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10 | 2008年
关键词：
D O I：
10.1109/ISCAS.2008.4541567
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A novel CMOS linear transconductor is presented. It is basically an improvement of the classical telescopic cascode OTA with source degeneration in which the resistor has been implemented using quasi-floating-gates transistors. It also allows compact implementation of common mode voltage control circuitry in order to save area and power consumption. This transconductor has been designed in a 0.5 mu m CMOS technology and the results obtained show a THD of -61 dB at 10 Mhz for a 1 V-PP output voltage. In order to show the feasibility for the implementation of tunable Gm-C filters using the proposed transconductor, a 1MHz tunable third order Chebyshev low-pass filter suitable for Bluetooth applications has been experimentally validated.
引用
收藏
页码：912 / +
页数：2
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