نتایج جستجو برای: simple self cascode regulated cascode

تعداد نتایج: 1124581  

2014
RISHI TODANI

In this work, design of CMOS operational amplifiers (opamps) is discussed using a new technique of transistor sizing, called as Potential Distribution Method (PDM). PDM is a technique proposed to simplify analog design and is primarily based on voltage and current distribution at different nodes of a circuit. Apart from being technology independent, PDM is also free from complex mathematical ex...

2014
T. Tixier

Mixed and analog systems design with high performance suffers from many difficulties due to supply voltage, power consumption and area overhead. A need for low-voltage low-power operational amplifiers exists and used for some applications. This paper deals an effective OTA design for good PSRR, low-voltage, low-power and wide output voltage swing operational amplifier. Trying to combine an alte...

Journal: :IEEE Trans. on Circuits and Systems 2012
Jonas Fritzin Christer Svensson Atila Alvandpour

This paper presents the design and analysis of a 5.5 V Class-D stage used in two fully integrated watt-level, +32.0 dBm and +29.7 dBm, outphasing RF Power Amplifiers (PA) in standard 130 nm and 65 nm CMOS technologies. The Class-D stage utilizes a cascode configuration, driven by an AC-coupled low-voltage driver, to allow a 5.5 V supply in the 1.2/2.5 V technologies without excessive device vol...

2011
Yen-Ting Chen Fang-Hsing Wang

A class-AB rail-to-rail CMOS buffer amplifier is proposed and fabricated. The main circuit structure includes a bias circuit, a complementary folded-cascode differential input stage, a common-mode rejection ratio (CMRR) enhancement stage, and a class-AB output stage. With the complementary folded-cascode input stage, high input common-mode range (ICMR) and rail-to-rail output are realized. By u...

پایان نامه :وزارت علوم، تحقیقات و فناوری - موسسه آموزش عالی غیرانتفاعی و غیردولتی سجاد مشهد - دانشکده برق و الکترونیک 1390

در سالهای اخیر ، رشد و توسعه تجهیزات مخابرات سیار و سیستم های قابل حمل سبب شده محققان و طراحان rf بر روی مدارات با ولتاژ و توان مصرفی کم تمرکز بیشتری داشته باشند . امروزه اکثر سیستم ها به صورت بیسیم می باشند و کاهش توان مصرفی امری ضروریست که سبب افزایش طول عمر باطری می شود . یکی از مهمترین بخش های گیرنده تقویت کننده کم نویز است که به عنوان اولین طبقه هر گیرنده محسوب می شود . مهمترین ویژگی lna ع...

2006
H. K. Soltveit

In order to achieve an overall noise of less than 1000 electrons per channel for a typical input capacitance of a total of 5-10 pF, the use of a low-noise circuit is required. A well proven topology to fulfil such a requirement is shown in fig. 1. Each channel consist of a low noise chargesensitive amplifier, an active CR-(RC) pulse shaper. The main noise contributor is the input transistor of ...

2012
Pallavi G. Darji

This paper presents a novel Current Steering Digital to Analog Converter architecture to reduce area as well as power dissipation. The current cells of conventional binary weighted architecture require larger size of transistors for MSBs. In this paper, same sized current cell transistors for MSBs as that of LSBs and a current mirror circuit is used between the load and MSBs to provide necessar...

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