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Faculty of Engineering
Document Details
Document Type
:
Article In Journal
Document Title
:
Investigation of a New Technique for Adaptive Cancellation of Noise in MOSFET Op. Amps.
دراسة وتبيان تجريبي لتقنبية جديدة للإلغاء المتوائم للضوضاء في المكبرات التشغيلية عالية التكبير والمصنوعة بتكنولوجيا م و س
Subject
:
Electrical Engineering
Document Language
:
English
Abstract
:
The paper presents a new technique for adaptive cancellation of noise in MOSFET IC operational amplifiers. It employs two operational amplifiers, one is passive with its inverting and noninverting inputs short circuited. This operational amplifier is only responsible to amplify its equivalent input noise and to give a proportional output voltage. The second operational amplifier is active and is used to amplify the signal to be processed together with its equivalent input noise and gives, thus, a proportional output voltage. The two operational amplifiers are coupled to each other through a common floating gate so that the noise of the passive amplifier is subtracted from the input of the second one and makes it, therefore, noise-free (~lnV/??H? z or 0.1 µVrms within 2.5 kHz bandwidth) over a wide variety dynamic range of input voltage (~120 dB) and ambient temperature. A feedback loop is added to improve the amplifier linearity (better than 2%). The standard 2 µm CMOS technology is used for the realization of the proposed noise-free operational amplifier.
ISSN
:
1319-1047
Journal Name
:
Engineering Sciences Journal
Volume
:
12
Issue Number
:
1
Publishing Year
:
1420 AH
1999 AD
Article Type
:
Article
Added Date
:
Tuesday, February 2, 2010
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
عادل الحناوي
EL-HENNAWY, ADEL
Investigator
Doctorate
Files
File Name
Type
Description
25017.pdf
pdf
Investigation of a New Technique for Adaptive Cancellation of Noise in MOSFET Op. Amps
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