CN109257039A - A kind of voltage level conversion device - Google Patents
A kind of voltage level conversion device Download PDFInfo
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- CN109257039A CN109257039A CN201811166691.7A CN201811166691A CN109257039A CN 109257039 A CN109257039 A CN 109257039A CN 201811166691 A CN201811166691 A CN 201811166691A CN 109257039 A CN109257039 A CN 109257039A
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- Prior art keywords
- resistance
- operational amplifier
- level
- conversion
- working power
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Amplifiers (AREA)
Abstract
The present invention discloses a kind of voltage level conversion device, including operational amplifier N1, resistance R1, R2, R3, R4, R5, capacitor C1, C2, C3 and zener diode V1；Conversion circuit is extended using reference power supply and operational amplifier the composition level of zener diode, input 0V~4V positive supply level range, -5V~+5V level range is converted to through level extension conversion circuit, this level range application field is wide, mainly using D/A conversion circuit output level conversion in automatic control system, -5V~+5V level range of conversion is conducive to automatically control setting comparison threshold and self-checking function, and structure is simple, at low cost, speed is fast, high reliability.
Description
Technical field
The present invention relates to a kind of voltage level conversion devices.
Background technique
In composite power source circuit especially SOC system, the supply voltage of each circuit unit is not fully consistent, it is difficult to
Unified, the signal transmission between each circuit unit needs just to can be carried out communication by conversion；Furthermore in order to save energy consumption, lead to
When often needing to reduce the operating voltage (such as 1.2V) of chip interior, but transmitting signal between chip and chip, it is still necessary to
It is carried out under higher voltage (such as 3.3V~5V).Therefore, it is necessary to use level shifting circuit as chip, circuit unit
Input/output interface, to realize the level conversion of above-mentioned signal.
Existing level shifting circuit is typically all that metal-oxide-semiconductor array is used to form, and switchs to low level or low electricity by high level
Flat turn is high level, is had a single function, and structure is complicated, higher cost, and use scope is not wide.
Summary of the invention
The purpose of the present invention is to provide a kind of voltage level conversion device, which can be by the incoming level of 0V~4V
- 5V~+5V output level is converted to, extends the conversion range of level, and structure is simple, at low cost, speed is fast, reliability
It is high.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of voltage level conversion device, including operational amplifier N1, resistance R1, R2, R3, R4, R5, capacitor C1, C2, C3 and
Zener diode V1；
The positive-negative power end of operational amplifier N1 is separately connected+6V working power and -6V working power, resistance R1 and two pole of pressure stabilizing
Pipe V1 is connected between+6V working power and GND, and one end of resistance R3 is connected to the connection of resistance R1 Yu zener diode V1
It holds, the inverting input terminal of the other end of resistance R3 connection operational amplifier N1, one end connection operational amplifier N1's of resistance R5
Inverting input terminal, resistance R5 the other end connection operational amplifier N1 output end, the output end of operational amplifier N1 is as institute
State the voltage output end of conversion equipment；
Capacitor C3 is in parallel with resistance R5；
The voltage input end of the conversion equipment passes through the non-inverting input terminal of resistance R2 connection operational amplifier N1, resistance R4 connection
Between the non-inverting input terminal and GND of operational amplifier N1；
Capacitor C1 is connected between+6V working power and GND, and capacitor C2 is connected between -6V working power and GND.
The invention has the advantages that using reference power supply and operational amplifier the composition level extension of zener diode
Conversion circuit inputs 0V~4V positive supply level range, is converted to -5V~+5V level range through level extension conversion circuit, this
Level range application field is wide, mainly using D/A conversion circuit output level conversion in automatic control system ,-the 5V of conversion~+
5V level range is conducive to automatically control setting comparison threshold and self-checking function, and structure is simple, at low cost, speed is fast, reliability
The advantages that high.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is circuit theory schematic diagram of the invention.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of voltage level conversion device, including operational amplifier N1, resistance R1, R2,
R3, R4, R5, capacitor C1, C2, C3 and zener diode V1.
The positive-negative power end of operational amplifier N1 is separately connected+6V working power and -6V working power, resistance R1 and pressure stabilizing
Diode V1 is connected between+6V working power and GND, and one end of resistance R3 is connected to the company of resistance R1 Yu zener diode V1
Connect end, resistance R3 other end connection operational amplifier N1 inverting input terminal, one end of resistance R5 connects operational amplifier N1
Inverting input terminal, resistance R5 the other end connection operational amplifier N1 output end, the output end conduct of operational amplifier N1
The voltage output end of the conversion equipment；
Capacitor C3 is in parallel with resistance R5.
The voltage input end of the conversion equipment passes through the non-inverting input terminal of resistance R2 connection operational amplifier N1, resistance R4
It is connected between the non-inverting input terminal and GND of operational amplifier N1.
Capacitor C1 is connected between+6V working power and GND, and capacitor C2 is connected between -6V working power and GND.
Zener diode V1 and the linear high precision reference power supply of resistance R1 group provide benchmark electricity for level shifting circuit
Pressure biasing.As R2=R3, R4=R5, output voltage Vo=Vi* { R4/ (R2+R4) } * { (R3+R5)/R3 }-of level converter
VW* R5/R3=(Vi-VW) * R5/R3, Vi be level converter input voltage, Vi=0V~4V, VWIt is zener diode
The pressure stabilizing value of V1, makes VW=2V；Make R5/R3=2.5 simultaneously, then final Vo=- 5V~+5V, level are converted to -5V by 0V~4V
~+5V achievees the purpose that level conversion.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form；Appoint
What those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the side of the disclosure above
Method and technology contents make many possible changes and modifications to technical solution of the present invention, or are revised as the equivalent reality of equivalent variations
Apply example.Therefore, anything that does not depart from the technical scheme of the invention according to the technical essence of the invention do above embodiments
Any simple modification, equivalent replacement, equivalence changes and modification, all of which are still within the scope of protection of the technical scheme of the invention.
Claims (1)
1. a kind of voltage level conversion device, which is characterized in that including operational amplifier N1, resistance R1, R2, R3, R4, R5, electricity
Hold C1, C2, C3 and zener diode V1；
The positive-negative power end of operational amplifier N1 is separately connected+6V working power and -6V working power, resistance R1 and two pole of pressure stabilizing
Pipe V1 is connected between+6V working power and GND, and one end of resistance R3 is connected to the connection of resistance R1 Yu zener diode V1
It holds, the inverting input terminal of the other end of resistance R3 connection operational amplifier N1, one end connection operational amplifier N1's of resistance R5
Inverting input terminal, resistance R5 the other end connection operational amplifier N1 output end, the output end of operational amplifier N1 is as institute
State the voltage output end of conversion equipment；
Capacitor C3 is in parallel with resistance R5；
The voltage input end of the conversion equipment passes through the non-inverting input terminal of resistance R2 connection operational amplifier N1, resistance R4 connection
Between the non-inverting input terminal and GND of operational amplifier N1；
Capacitor C1 is connected between+6V working power and GND, and capacitor C2 is connected between -6V working power and GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166691.7A CN109257039A (en) | 2018-10-08 | 2018-10-08 | A kind of voltage level conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166691.7A CN109257039A (en) | 2018-10-08 | 2018-10-08 | A kind of voltage level conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109257039A true CN109257039A (en) | 2019-01-22 |
Family
ID=65045428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811166691.7A Pending CN109257039A (en) | 2018-10-08 | 2018-10-08 | A kind of voltage level conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109257039A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060310A (en) * | 2006-04-17 | 2007-10-24 | 深圳安凯微电子技术有限公司 | A DC level switching circuit |
| CN102751754A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Solar energy and CT (current) mixing type energy storage and power supply device based on power control |
| CN103178594A (en) * | 2013-03-05 | 2013-06-26 | 四川省电力公司内江电业局 | Noise-proof anti-return anti-self-charging controller |
| CN205921562U (en) * | 2016-07-26 | 2017-02-01 | 昆明理工大学 | Single mains operated operational amplifier circuit |
-
2018
- 2018-10-08 CN CN201811166691.7A patent/CN109257039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060310A (en) * | 2006-04-17 | 2007-10-24 | 深圳安凯微电子技术有限公司 | A DC level switching circuit |
| CN102751754A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Solar energy and CT (current) mixing type energy storage and power supply device based on power control |
| CN103178594A (en) * | 2013-03-05 | 2013-06-26 | 四川省电力公司内江电业局 | Noise-proof anti-return anti-self-charging controller |
| CN205921562U (en) * | 2016-07-26 | 2017-02-01 | 昆明理工大学 | Single mains operated operational amplifier circuit |
Non-Patent Citations (3)
| Title |
|---|
| 刘英泽: "《模拟电子技术》", 31 August 2011 * |
| 刘谋荣: "一种低噪声大地电磁数据采集电路设计", 《舰船电子工程》 * |
| 程珍珍: "《电工电子技术》", 31 October 2015, 北京理工大学出版社 * |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190122 |
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| RJ01 | Rejection of invention patent application after publication |