A linear compact tunable transconductor for Gm-C applications

被引：6
|
作者：
Pedro, M. [1 ]
Galan, J. [1 ]
Sanchez-Rodriguez, T. [1 ]
Pennisi, M. [2 ]
Jimenez, R. [1 ]
Munoz, F. [3 ]
Carvajal, R. G. [3 ]
机构：
[1] Univ Huelva, Dpto Ingn Elect Sistemas Informat & Automat, E-21071 Huelva, Spain
[2] Univ Catania, Dipart Ing Elettr Elettron & Sistemi, Catania, Italy
[3] Univ Seville, Escuela Super Ingn, Dpto Ingn Elect, E-41092 Seville, Spain
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2012年 / 72卷 / 02期
关键词：
Channel filter; Transconductor; Linearity; Communication receiver; FLIPPED VOLTAGE FOLLOWER; CMOS TRANSCONDUCTOR; IF FILTER; OTAS;
D O I：
10.1007/s10470-011-9807-2
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A CMOS highly linear voltage-controlled transconductor suitable for Gm-C filter design is presented. The control loop to program the transconductance maintains the input transistors in triode region with a compact topology. Measurement results for the transconductor fabricated in a 0.5-mu m CMOS technology feature a spurious-free dynamic range (SFDR) of 72 dB for 1 V-pp differential inputs at 1 MHz. The voltage to current converter ensures a high linearity level for a wide transconductance range. Functionality of the transconductor is shown in a fifth-order Gm-C tunable complex filter well suited for a dual-mode Bluetooth/Zigbee transceiver.
引用
收藏
页码：351 / 361
页数：11
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