An integrated operational amplifier level window expansion device based on variable asymmetric power supply mechanism

Abstract

The invention belongs to the field of integrated operational amplifier circuits, and in particular relates to an integrated operational amplifier level window expansion device based on a variable asymmetric power supply mechanism. In the present invention, the control unit is connected to the dual-channel digital-to-analog converter, and the output of the dual-channel digital-to-analog converter is controlled by the control unit to make the two voltages independent of each other, realizing the independent control of the positive and negative power supplies of the integrated operational amplifier, so it can be more Convenient adjustment of each power supply voltage. After the output voltage of the dual-channel digital-to-analog converter is adjusted by the voltage amplifier and the push-pull circuit, the voltage range of the positive and negative power supplies of the integrated op amp is widened, the driving ability of the power supply is enhanced, and the level window is improved. output range, thereby broadening its application range. Compared with the prior art, the present invention has the characteristics of simple structure, convenient control, low cost, etc., and can maintain the bandwidth and output power capability of the integrated operational amplifier circuit to the greatest extent, and helps to expand the application range of the integrated operational amplifier.

Description

An integrated operational amplifier level window expansion device based on a variable asymmetric power supply mechanism technical field The invention belongs to the integrated operational amplifier circuit field, be specifically related to a kind of integrated operational amplifier based on variable asymmetrical power supply mechanism Turn on the window extender. Background technique [0002] In recent years, the integrated circuit industry has gradually become a strategic, fundamental and leading industry for social and economic development. As one of the most basic and widely used devices in integrated circuits, integrated operational amplifiers have been widely used in people's production and life. To the general application: in military products, due to the small size, light weight, low power consumption, and reliable operation of integrated operational amplifiers. It is favored by modern weapon systems; as a typical military-civilian dual-use product, integrated o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated op amp level window expansion device based on a variable asymmetric power supply mechanism to solve the problem that the input and output level windows of the current integrated op amp are relatively fixed and the output range is generally not wide, resulting in a narrow application range. The problem

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