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Amplification circuit and electronic equipment

An amplifying circuit and amplifying unit technology, applied in the layout of amplifier protection circuits, amplifiers, and improving amplifiers to reduce temperature/power supply voltage changes, etc. Overshoot, the effect of shortening the settling time

Inactive Publication Date: 2022-01-11
深圳市时代速信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide an amplifying circuit to solve the problems of slow establishment speed and overshoot of the amplifying circuit existing in the prior art

Method used

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  • Amplification circuit and electronic equipment
  • Amplification circuit and electronic equipment
  • Amplification circuit and electronic equipment

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Embodiment Construction

[0044] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0045] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...

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PUM

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Abstract

The invention provides an amplification circuit and electronic equipment, and relates to the technical field of amplification circuits. The amplification circuit comprises a first amplification unit, an initialization unit, a compensation unit, a second amplification unit and a feedback unit, the initialization unit is electrically connected with a pull-up output end and a pull-down output end of the first amplification unit, the second amplification unit and the compensation unit, and the second amplification unit, the compensation unit and the feedback unit are electrically connected with one another. The feedback unit is also electrically connected with the first amplification unit; wherein the initialization unit is used for providing initial voltage which is not zero for the compensation unit, so that the establishment time of the amplification circuit is shortened, and overshoot of the amplification circuit is prevented. The amplification circuit and the electronic equipment provided by the invention have the advantages of improving the circuit establishment speed and preventing overshoot.

Description

technical field [0001] The present application relates to the technical field of amplifier circuits, in particular, to an amplifier circuit and electronic equipment. Background technique [0002] The two-stage amplification circuit is a common circuit, which achieves the required gain through two-stage amplification. In order to improve the overall stability of the circuit, a compensation circuit is generally added to the second-stage amplifier circuit to adjust the positions of the main and negative poles of the first-stage and second-stage amplifiers. [0003] However, while the compensation circuit improves the compensation effect of the small signal, it also brings about the problem of slow establishment of the large signal. In order to solve this problem, a method of resetting the initial voltage of the compensation circuit to ground is generally adopted, but this method will cause an overshoot problem in the circuit. [0004] To sum up, the amplifying circuit in the ...

Claims

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Application Information

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IPC IPC(8): H03F1/30H03F1/52H03F3/04H03F3/16
CPCH03F1/303H03F1/301H03F1/52H03F1/523H03F3/04H03F3/16
Inventor 张孟文
Owner 深圳市时代速信科技有限公司