کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6879271 1443111 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis and design of a new COA-based current-mode instrumentation amplifier with robust performance against mismatches
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Analysis and design of a new COA-based current-mode instrumentation amplifier with robust performance against mismatches
چکیده انگلیسی
In this paper, analysis and design of a new current-mode instrumentation amplifier (CMIA) circuit is presented. The proposed circuit employs two Current Operational Amplifiers (COA) as active building blocks, one resistor and two transistors operating as variable resistors to electronically control the differential-mode gain. The main feature of the proposed CMIA is that unlike most previously reported CMIAs, its CMRR has negligible sensitivity to mismatches. In addition, in the proposed circuit both active building blocks operate in negative feedback loop which results in an overall enhanced performance. SPICE simulation results using 0.18 μm TSMC CMOS parameters and supply voltage of ±0.9 V show a constant CMRR of about 51 dB regardless of mismatches and wide bandwidth ranging from 14.8 MHz to about 3 MHz for differential-mode gains between 3 and 18 dB, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 89, May 2018, Pages 105-109
نویسندگان
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