Unlock instant, AI-driven research and patent intelligence for your innovation.

current mirror circuit

A technology of current mirroring and current, which is applied in the direction of adjusting electrical variables, instruments, control/regulation systems, etc., and can solve problems such as ineffective effects

Active Publication Date: 2019-07-02
西安矽力杰半导体技术有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology usually improves the inconsistency of this size by increasing the device area of ​​the transistor, but this effect is not obvious for the occasion of small current operation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • current mirror circuit
  • current mirror circuit
  • current mirror circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0034] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0035] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another eleme...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a current mirror circuit, by setting a selection circuit for some or all of the transistors in the current mirror circuit, in each sub-cycle, a part of the transistors are used as transistors on the input side and another part of the transistors are used as transistors on the output side through the selection circuit, And, the transistor on the input side and the transistor on the output side are switched in different sub-periods. In this way, transistor current errors caused by manufacturing processes can be compensated for each other in the entire working cycle, thereby reducing image errors.

Description

technical field [0001] The invention relates to electronic circuit technology, in particular to a current mirror circuit. Background technique [0002] The current mirror circuit is also called a mirror current source, which is used to output a mirror current with the same direction and proportional magnitude at the current output terminal when a reference current is input at the current input terminal. The circuit diagram of the existing current mirror circuit is as follows figure 1 As shown, it uses the principle that the channel current is equal when the gate voltage of the transistor is equal to replicate the input reference current. At the same time, by adjusting the quantity ratio of the transistors on the input side and the transistors on the output side, the ratio of the mirror current to the reference current can be adjusted. [0003] However, due to the precision of the manufacturing process, the actual dimensions of the transistors in the current mirror circuit ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05F3/26
CPCG05F3/262G05F3/265
Inventor 关会丽何惠森杨敏李林喜
Owner 西安矽力杰半导体技术有限公司