NDLI: A Dual Probe STM Imaging System and a Low Noise Switched-Capacitor Transimpedance Amplifier

Content Provider	IEEE Xplore Digital Library
Author	Yingying Tang Yang Zhang Fedder, G.K. Carley, L.R.
Copyright Year	2001
Abstract	This article reports a dual probe STM imaging system that doubles traditional STM frame rate and is capable of being scaled up to perform highly parallel STM imaging. A CMOS MEMS probe array is controlled by two off-chip servo loops to generate two STM images simultaneously. A CMOS switched-capacitor transimpedance amplifier (SCTIA) is integrated with the CMOS MEMS probe to locally sense tunneling current and facilitate future extension to much larger arrays. The SCTIA is sampled at the frequency of 166 kHz to produce an ultra-high transimpedance gain of 88 MQ with a tunnel current bandwidth of 40 kHz. Correlated double sampling is utilized to just 25 fA/√Hz. This novel SCTIA is designed and fabricated achieve an extremely low input referred noise current floor of in a 0.35 μm BiCMOS process, with its core SCTIA occupying an area of just 0.02 mm².
Sponsorship	IEEE Sensors Council
Starting Page	2984
Ending Page	2992
Page Count	9
File Size	1538029
File Format	PDF
ISSN	1530437X
Volume Number	13
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	switched capacitor STM CMOS-MEMS probes transimpedance amplifier
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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