نتایج جستجو برای: cmrr

تعداد نتایج: 171  

2017
Yang Xu Yanling Wu Xiaotong Jia

A system-on-chip for the application of Electrocardiogram (ECG) monitoring and diagnostic is proposed in this paper, which includes reference circuit, instrumentation amplifier (IA), band-pass filter (BPF), amplifier stage and successive approximation register analog-to-digital converter (SAR-ADC). The Common-Mode Rejection Ratio (CMRR) of IA is greater than 132.87 dB, total gain of the AFE ach...

2010
R Macías F Seoane

In recent years, Electrical Bioimpedance (EBI) methods have gained importance. These methods are often based on obtaining impedance spectrum in the range of β-dispersion, i.e. from a few kHz up to some MHz. To measure EBI a constant current is often injected and the voltage across the tissue under study is recorded. Due to the performance of the current source influences the performance of the ...

Journal: :IET Circuits, Devices & Systems 2015
Alireza Mesri Mahmoud Mahdipour Pirbazari Khayrollah Hadidi Abdollah Khoei

A novel topology for a high gain two-stage amplifier is proposed. The proposed circuit is designed in a way that the non-dominant pole is at output of the first stage. A positive capacitive feedback (PCF) around the second stage introduces a left half plane (LHP) zero which cancels the phase shift introduced by the non-dominant pole, considerably. The dominant pole is at the output node which m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده مهندسی برق و کامپیوتر 1394

سیستمها برای سالیانی با استفاده از تکنولوژی cmos طراحی و تولید شده اند، با بهبودهایی که در فرایند ساخت بوجود آمد طراحی ها توانستند به راحتی در نواحی کوچکتری مقیاس شوند. برای افزاره های cmos با طول گیت زیر 100 نانومتر قابلیت تغییرپذیری شدید افزاره ها معرفی و به عنوان اصلی ترین موانع طراحی مدارات آنالوگ نسل جدید شناخته شد. هندسه کوچک افزاره ها، علاوه بر مجتمع سازی انبوه ترانزیستورها، توانایی طراح...

Journal: :IEEE Access 2023

This paper presents a novel 0.3V rail-to-rail body-driven three-stage operational transconductance amplifier (OTA). The proposed OTA architecture allows achieving high DC gain in spite of the bulk-driven input. is due to doubled body at first and third stages, gain, gate-driven second stage. bias current each branch accurately set through or mirrors, thus guaranteeing an outstanding stability m...

Journal: :Journal of Alzheimer's disease : JAD 2013
Philippe Robert

Alzheimer’s disease (AD) is recognized in France as a major public health problem and led, beginning in 2001, to the development of three National Alzheimer plans. The third Alzheimer Plan was launched in 2008 (French National Plan for “Alzheimer and Related Disorders” 2008–2012) to strengthen research on AD and related disorders, promote earlier diagnosis, and improve both patient management a...

چکیده: در این مقاله یک تقویت­کننده لگاریتمی کم­مصرف با نویز پایین، برای استفاده در بخش جلویی میکروسیستم­های ضبط سیگنال­های زیست-پتانسیل، ارائه شده است. به­منظور جلوگیری از افزایش دمای بافت و تخریب آن در حـوالی الـمان کاشتـه­شده، عملکرد کم­مصرف در سیستم­های ثبت سیگنال عصبی، بسیار حیاتی و مهم است. مشخصه لگاریتمی با استفاده از تقریب­های تکه­ای-خطی محقق شده و از ساختار جمع موازی برای پیاده­سازی تقو...

In this paper, we propose an efficient approach to design optimization of analog circuits that is based on the reinforcement learning method. In this work, Multi-Objective Learning Automata (MOLA) is used to design a two-stage CMOS operational amplifier (op-amp) in 0.25μm technology. The aim is optimizing power consumption and area so as to achieve minimum Total Optimality Index (TOI), as a new...

Journal: :Symmetry 2023

In general, structures with rotational joints and linearized dynamic equations are used to facilitate the control of manipulator robots. However, in some cases, workspace is limited, which reduces accuracy performance this type robot, especially when uncertainties considered. To counter problem, work presents a redundant planar robot Six-Degree-of-Freedom (6-DoF), has an innovative structural c...

2017
Abhishek Chakraborty

Abstract The increasing demand for high performance, battery-operated, system-on-chip (SoC) in communication and computing has shifted the focus from traditional constraints (such as area, performance, cost and reliability) to power consumption. With the increasing integration level, energy consumption has become an important issue. Consequently much effort has been put in achieving lower dissi...

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