Scholarlink

<p>This paper presents the realization of a current-mode and wide-range logarithmic circuit. The circuit is based on the Taylor series expansion approximation of the logarithmic function and employs MOSFET operating in saturation. The proposed circuit is insensitive to process, voltage and temperature (PVT) variations. The post-layout simulation using CADENCE Virtuoso tools validates the proposed design functionality in 0.18 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13369_2025_10493_Article_IEq1.gif" Format="GIF" Height="13" Rendition="HTML" Resolution="72" Type="Linedraw" Width="12" /> </InlineMediaObject> <EquationSource Format="TEX">\({\upmu }\)</EquationSource> <EquationSource Format="MATHML"><math> <mi mathvariant="normal">μ</mi> </math></EquationSource> </InlineEquation>m TSMC CMOS technology. The circuit is powered by a ±1.25 volt DC source with a normalized input range that can go from <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13369_2025_10493_Article_IEq2.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="24" /> </InlineMediaObject> <EquationSource Format="TEX">\(-1\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </math></EquationSource> </InlineEquation> to 2 and can be used in up to 2.8 MHz application.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Realization of a PVT-Independent Current-Mode CMOS Logarithmic Circuit

  • 期刊论文

  • 发表日期：

    2025年7月30日

查看全文
  • Mazen Abouelezz,
  • Muneer A. Al-Absi

摘要

This paper presents the realization of a current-mode and wide-range logarithmic circuit. The circuit is based on the Taylor series expansion approximation of the logarithmic function and employs MOSFET operating in saturation. The proposed circuit is insensitive to process, voltage and temperature (PVT) variations. The post-layout simulation using CADENCE Virtuoso tools validates the proposed design functionality in 0.18 \({\upmu }\) μ m TSMC CMOS technology. The circuit is powered by a ±1.25 volt DC source with a normalized input range that can go from \(-1\) - 1 to 2 and can be used in up to 2.8 MHz application.