Jihyang Wi , Gyuri Choi , Mookyoung Yoo , Sanggyun Kang , Byeongkwan Jin , Hyeoktae Son , Kyounghwan Kim , Gibae Nam , Hyoungho Ko
{"title":"采用 G 共享乒乓和纹波平均技术的低噪声多路径运算放大器","authors":"Jihyang Wi , Gyuri Choi , Mookyoung Yoo , Sanggyun Kang , Byeongkwan Jin , Hyeoktae Son , Kyounghwan Kim , Gibae Nam , Hyoungho Ko","doi":"10.1016/j.mejo.2024.106306","DOIUrl":null,"url":null,"abstract":"<div><p>This paper presents a low-noise chopper-stabilized multipath operational amplifier with transconductance (<em>G</em><sub><em>m</em></sub>) sharing technique between ping-pong stages and ripple averaging technique. While the chopper stabilization is effective in reducing low-frequency noise and offset, output signals may yet contain ripples caused by the modulated amplifier offset. Several schemes can be implemented to suppress these output ripples; however, they require additional chip area and current consumption. The proposed ripple averaging technique effectively eliminates chopper ripples with very low additional power consumption of switched capacitors. To reduce the power consumption and circuit area, the <em>G</em><sub><em>m</em></sub>-shared ping-pong scheme is also proposed. The proposed circuit was implemented using a 0.18-μm CMOS process, with a total current consumption of 121.91 μA, and a supply voltage of 1.8 V. It occupies a chip area of 0.33 mm<sup>2</sup> and exhibits an input-referred offset of 4.833 μV with a standard deviation 0.861 μV. The proposed amplifier has the input-referred noise level of 20.1 nV/√Hz.</p></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A low-noise multipath operational amplifier with Gm-shared ping-pong and ripple averaging techniques\",\"authors\":\"Jihyang Wi , Gyuri Choi , Mookyoung Yoo , Sanggyun Kang , Byeongkwan Jin , Hyeoktae Son , Kyounghwan Kim , Gibae Nam , Hyoungho Ko\",\"doi\":\"10.1016/j.mejo.2024.106306\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This paper presents a low-noise chopper-stabilized multipath operational amplifier with transconductance (<em>G</em><sub><em>m</em></sub>) sharing technique between ping-pong stages and ripple averaging technique. While the chopper stabilization is effective in reducing low-frequency noise and offset, output signals may yet contain ripples caused by the modulated amplifier offset. Several schemes can be implemented to suppress these output ripples; however, they require additional chip area and current consumption. The proposed ripple averaging technique effectively eliminates chopper ripples with very low additional power consumption of switched capacitors. To reduce the power consumption and circuit area, the <em>G</em><sub><em>m</em></sub>-shared ping-pong scheme is also proposed. The proposed circuit was implemented using a 0.18-μm CMOS process, with a total current consumption of 121.91 μA, and a supply voltage of 1.8 V. It occupies a chip area of 0.33 mm<sup>2</sup> and exhibits an input-referred offset of 4.833 μV with a standard deviation 0.861 μV. The proposed amplifier has the input-referred noise level of 20.1 nV/√Hz.</p></div>\",\"PeriodicalId\":49818,\"journal\":{\"name\":\"Microelectronics Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-07-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microelectronics Journal\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1879239124000109\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microelectronics Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1879239124000109","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A low-noise multipath operational amplifier with Gm-shared ping-pong and ripple averaging techniques
This paper presents a low-noise chopper-stabilized multipath operational amplifier with transconductance (Gm) sharing technique between ping-pong stages and ripple averaging technique. While the chopper stabilization is effective in reducing low-frequency noise and offset, output signals may yet contain ripples caused by the modulated amplifier offset. Several schemes can be implemented to suppress these output ripples; however, they require additional chip area and current consumption. The proposed ripple averaging technique effectively eliminates chopper ripples with very low additional power consumption of switched capacitors. To reduce the power consumption and circuit area, the Gm-shared ping-pong scheme is also proposed. The proposed circuit was implemented using a 0.18-μm CMOS process, with a total current consumption of 121.91 μA, and a supply voltage of 1.8 V. It occupies a chip area of 0.33 mm2 and exhibits an input-referred offset of 4.833 μV with a standard deviation 0.861 μV. The proposed amplifier has the input-referred noise level of 20.1 nV/√Hz.
期刊介绍：
Published since 1969, the Microelectronics Journal is an international forum for the dissemination of research and applications of microelectronic systems, circuits, and emerging technologies. Papers published in the Microelectronics Journal have undergone peer review to ensure originality, relevance, and timeliness. The journal thus provides a worldwide, regular, and comprehensive update on microelectronic circuits and systems.
The Microelectronics Journal invites papers describing significant research and applications in all of the areas listed below. Comprehensive review/survey papers covering recent developments will also be considered. The Microelectronics Journal covers circuits and systems. This topic includes but is not limited to: Analog, digital, mixed, and RF circuits and related design methodologies; Logic, architectural, and system level synthesis; Testing, design for testability, built-in self-test; Area, power, and thermal analysis and design; Mixed-domain simulation and design; Embedded systems; Non-von Neumann computing and related technologies and circuits; Design and test of high complexity systems integration; SoC, NoC, SIP, and NIP design and test; 3-D integration design and analysis; Emerging device technologies and circuits, such as FinFETs, SETs, spintronics, SFQ, MTJ, etc.
Application aspects such as signal and image processing including circuits for cryptography, sensors, and actuators including sensor networks, reliability and quality issues, and economic models are also welcome.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
