A novel active‐input cascode current mirror with high precision and low power dissipation. Issue 2 (8th September 2021)

• Record Type: Journal Article
• Authors: Xie, Haiqing; Wang, Zhenyu; Liu, Gang; Lu, Junlin; Yi, Xinbo
• Is Part Of: Engineering reports. Volume 4:Issue 2(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-09-08
• Subjects: active‐input -- cascode output -- current mirror -- replication error; Engineering -- Periodicals; Computer science -- Periodicals; 620.005
• DOI: 10.1002/eng2.12451
• Languages: English
• ISSNs: 2577-8196

Abstract

Abstract: In this article, a novel active‐input cascode current mirror (CM) with high precision and low power consumption is proposed. First, the cascode input structure is employed upon the active‐input CM to reduce the requirement of high‐gain op‐amp. In addition, the extra branch to the ground is designed. Subsequently, the resistance adaptive loop is separated from the current replication loop to eliminate the matching obstacle between two op‐amps. The proposed CM fulfilled in 0.18 μm CMOS technology, is able to operate with a supply voltage of 1.0 V, wide input range of 100 nA–1 mA, low power dissipation of 40 μW, and lower replication error (below 1.4%) than the same configuration using the conventional active‐input mechanism. Abstract : This manuscript proposes a novel active‐input cascode current mirror which reduces the requirement of high‐gain op‐amp, and eliminate the matching obstacle between two op‐amps. The proposed current mirror is able to operate with low power dissipation of 40 μW, and lower replication error (below 1.4%) than the same configuration using the conventional active‐input mechanism.