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
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
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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 0.18â¯Î¼m TSMC CMOS parameters and supply voltage of ±0.9â¯V show a constant CMRR of about 51â¯dB regardless of mismatches and wide bandwidth ranging from 14.8â¯MHz to about 3â¯MHz for differential-mode gains between 3 and 18â¯dB, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 89, May 2018, Pages 105-109
Journal: AEU - International Journal of Electronics and Communications - Volume 89, May 2018, Pages 105-109
نویسندگان
Leila Safari, Shahram Minaei, Giuseppe Ferri, Vincenzo Stornelli,