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  • 标题:Low-Voltage Tunable Pseudo-Differential Transconductor with High Linearity
  • 本地全文:下载
  • 作者:Galan, Juan Antonio Gomez ; Carrasco, Manuel Pedro ; Pennisi, Melita
  • 期刊名称:ETRI Journal
  • 印刷版ISSN:1225-6463
  • 电子版ISSN:2233-7326
  • 出版年度:2009
  • 卷号:31
  • 期号:5
  • 页码:576-584
  • DOI:10.4218/etrij.09.0109.0113
  • 语种:English
  • 出版社:Electronics and Telecommunications Research Institute
  • 摘要:A novel tunable transconductor is presented. Input transistors operate in the triode region to achieve programmable voltage-to-current conversion. These transistors are kept in the triode region by a novel negative feedback loop which features simplicity, low voltage requirements, and high output resistance. A linearity analysis is carried out which demonstrates how the proposed transconductance tuning scheme leads to high linearity in a wide transconductance range. Measurement results for a 0.5 CMOS implementation of the transconductor show a transconductance tuning range of more than a decade (15 to 165 ) and a total harmonic distortion of -67 dB at 1 MHz for an input of 1 Vpp and a supply voltage of 1.8 V.
  • 关键词:Analog CMOS circuit;linear resistor;operational transconductance amplifier (OTA);low-power and low-voltage circuit
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