A Compact Wide-swing Self-biased Cascode Current Mirror for Wide Dynamic-range Applications

The cascode current mirror is the most widely used block in analog circuit design, and wide voltage swing operation is essential for low-supply voltage applications. In wide dynamic-range applications, such as current sensing in DC-DC converters, the current mirror must maintain high accuracy across...

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Bibliographic Details
Published inJournal of semiconductor technology and science Vol. 25; no. 1; pp. 66 - 70
Main Authors Yeo, Seongil, Kim, Jaejin, Koo, Gunmo, Cho, Kunhee
Format Journal Article
LanguageEnglish
Published 대한전자공학회 01.02.2025
Subjects
전기공학
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Summary:The cascode current mirror is the most widely used block in analog circuit design, and wide voltage swing operation is essential for low-supply voltage applications. In wide dynamic-range applications, such as current sensing in DC-DC converters, the current mirror must maintain high accuracy across a wide range of reference currents while enabling wide voltage swing operation at the maximum reference current. In this paper, a wideswing self-biased cascode current mirror for wide dynamic-range applications is described. Unlike conventional structures, the proposed design is biased by a non-isolated active device without using an extra current path or an isolated active device. The proposed current mirror demonstrates higher accuracy for a wide-range of reference currents compared to prior wide-swing cascode current mirror designs and offers a more compact design. KCI Citation Count: 0
ISSN:2233-4866
1598-1657
1598-1657
2233-4866
DOI:10.5573/JSTS.2025.25.1.66