Low-voltage linearly tunable CMOS transconductor with common-mode feedforward

被引：0
|
作者：
Calvo, B. [1 ]
Celma, S. [1 ]
Sanz, M. T. [1 ]
Alegre, J. P. [1 ]
机构：
[1] Univ Zaragoza, Grp Elect Design, E-50009 Zaragoza, Spain
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-11 | 2007年
关键词：
D O I：
10.1109/ISCAS.2007.378563
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper presents a new low-voltage pseudo-differential continuous-time CMOS transconductor for wideband applications. The proposed cell is based on a feedforward cancellation of the input common-mode signal and keeps the input common mode voltage constant, while the transconductance is easily tunable through a continuous bias voltage. Linearity is preserved during the tuning process for a moderate range of transconductance values. Simulation results for a 0.35 mu m CMOS design show a 1:2 G(m) tuning range with an almost constant bandwidth over 600 MHz Total harmonic distortion figures are below -60 dB over the whole range at 10 MHz up to a 200 mu A(p-p) differential output. The proposed cell consumes less than 1.2 mW from a single 2.0 V supply.
引用
收藏
页码：461 / 464
页数：4
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