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2010•Journal of Changchun University of Science and TechnologyRequires access

Design of Numeric Control,High-Gain and Wide Bandwidth Amplifier Based on AD603

Rui Li

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Abstract

This paper proposes a high gain and wide bandwidth amplifiers with numerical approach. It is improved that the low-frequency characteristics and the range of gain refers to direct-coupling. The gain is controlled with numerical approach,which makes the gain stability. It is easy to control the gain of the multistage amplifier with adopting uniform gain control voltage. It is useful for numerical approach because of the linear between ontrol voltage and the gain. AVR microcontroller is the heart of numerical unit. The gain is been preset and adjusted through keyboard. Most of index can be showed through LCD. NC linkage switching technology is used to switch between two or three multistage amplifier,it is useful to enabling a more flexible application of the amplifier.

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What this paper is about

This paper proposes a high gain and wide bandwidth amplifiers with numerical approach. It is improved that the low-frequency characteristics and the range of gain refers to direct-coupling. The gain is controlled with numerical approach,which makes the gain stability. It is easy to control the gain of the multistage amplifier with adopting uniform gain control voltage. It is useful for numerical approach because of the linear between ontrol voltage and the gain. AVR microcontroller is the heart of numerical unit. The gain is been preset and adjusted through keyboard. Most of index can be showed through LCD. NC linkage switching technology is used to switch between two or three multistage amplifier,it is useful to enabling a more flexible application of the amplifier.

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Available abstract

This paper proposes a high gain and wide bandwidth amplifiers with numerical approach. It is improved that the low-frequency characteristics and the range of gain refers to direct-coupling. The gain is controlled with numerical approach,which makes the gain stability. It is easy to control the gain of the multistage amplifier with adopting uniform gain control voltage. It is useful for numerical approach because of the linear between ontrol voltage and the gain. AVR microcontroller is the heart of numerical unit. The gain is been preset and adjusted through keyboard. Most of index can be showed through LCD. NC linkage switching technology is used to switch between two or three multistage amplifier,it is useful to enabling a more flexible application of the amplifier.

Key concepts: Open-loop gain, Fully differential amplifier, Amplifier, Automatic gain control, Direct-coupled amplifier, Bandwidth (computing), High-gain antenna, Negative feedback amplifier

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