CN204613667U - A kind of digitizing isolated amplifier - Google Patents
A kind of digitizing isolated amplifier Download PDFInfo
- Publication number
- CN204613667U CN204613667U CN201520288258.6U CN201520288258U CN204613667U CN 204613667 U CN204613667 U CN 204613667U CN 201520288258 U CN201520288258 U CN 201520288258U CN 204613667 U CN204613667 U CN 204613667U
- Authority
- CN
- China
- Prior art keywords
- voltage
- output terminal
- amplifier
- adum5240
- stm32
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Amplifiers (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The utility model discloses a kind of digitizing isolated amplifier, comprise AD650 voltage-frequency converter part, its output terminal is connected with ADuM5240 digital isolator, the output terminal of described ADuM5240 digital isolator is connected with STM32 monolithic counter, and the output terminal of the D/A converter of described STM32 single-chip microcomputer is connected with post-amplifier; Wherein, described AD650 voltage-frequency converter part changes the analog voltage signal of input into frequency signal, high_voltage isolation is carried out again by described ADuM5240 digital isolator, then deliver to described STM32 monolithic counter to count, the corresponding corresponding voltage of the numerical value obtained, the D/A converter finally by STM32 single-chip microcomputer converts analog signal output to and amplifies to described post-amplifier.The utility model uses device few, and volume is little, lightweight, and reliability is high, and the life-span is long, and particularly suitable is to volume, weight, occasion that reliability requirement is high.
Description
Technical field
The utility model relates to a kind of digitizing isolated amplifier.
Background technology
At present, TH3656 isolated amplifier, it is my company realizes production domesticization several years ago product according to the BB3656 amplifier technique parameter of BURR-BROWN company of the U.S., it is that two-stage is amplified, and amplifying circuit front stage is isolated by transformer, needs modulation and demodulation circuit, as figure below, mimic channel is more comparatively speaking, circuit more complicated, and precision is high not as digital circuit.
Utility model content
The utility model object is that the defect existed for prior art provides a kind of digitizing isolated amplifier.
The utility model for achieving the above object, adopt following technical scheme: a kind of digitizing isolated amplifier, comprise AD650 voltage-frequency converter part, its output terminal is connected with ADuM5240 digital isolator, the output terminal of described ADuM5240 digital isolator is connected with STM32 monolithic counter, the output terminal of described STM32 monolithic counter is connected with STM32 single-chip microcomputer D/A converter, and the output terminal of described STM32 single-chip microcomputer D/A converter is connected with post-amplifier; Wherein, described AD650 voltage-frequency converter part changes the analog voltage signal of input into frequency signal, high_voltage isolation is carried out again by described ADuM5240 digital isolator, then deliver to described STM32 monolithic counter to count, the corresponding corresponding voltage of the numerical value obtained, converts analog signal output to finally by STM32 single-chip microcomputer D/A converter and amplifies to described post-amplifier.
The beneficial effects of the utility model: the utility model uses device few, and volume is little, lightweight, and reliability is high, and the life-span is long, and particularly suitable is to volume, weight, occasion that reliability requirement is high.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the function of the present utility model.
Embodiment
Shown in Fig. 1, relate to a kind of digitizing isolated amplifier, comprise AD650 voltage-frequency converter part 1, its output terminal is connected with ADuM5240 digital isolator 2, the output terminal of described ADuM5240 digital isolator 2 is connected with STM32 monolithic counter 3, the output terminal of described STM32 monolithic counter 3 is connected with STM32 single-chip microcomputer D/A converter 4, and the output terminal of described STM32 single-chip microcomputer D/A converter 4 is connected with post-amplifier 5; Wherein, described AD650 voltage-frequency converter part 1 changes the analog voltage signal of input into frequency signal, high_voltage isolation is carried out again by described ADuM5240 digital isolator 2, then deliver to described STM32 monolithic counter 3 to count, the corresponding corresponding voltage of the numerical value obtained, converts analog signal output to finally by STM32 single-chip microcomputer D/A converter 4 and amplifies to described post-amplifier 5.The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. a digitizing isolated amplifier, it is characterized in that, comprise AD650 voltage-frequency converter part, its output terminal is connected with ADuM5240 digital isolator, the output terminal of described ADuM5240 digital isolator is connected with STM32 monolithic counter, the output terminal of described STM32 monolithic counter is connected with STM32 single-chip microcomputer D/A converter, and the output terminal of described STM32 single-chip microcomputer D/A converter is connected with post-amplifier; Wherein, described AD650 voltage-frequency converter part changes the analog voltage signal of input into frequency signal, high_voltage isolation is carried out again by described ADuM5240 digital isolator, then deliver to described STM32 monolithic counter to count, the corresponding corresponding voltage of the numerical value obtained, converts analog signal output to finally by STM32 single-chip microcomputer D/A converter and amplifies to described post-amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288258.6U CN204613667U (en) | 2015-05-06 | 2015-05-06 | A kind of digitizing isolated amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288258.6U CN204613667U (en) | 2015-05-06 | 2015-05-06 | A kind of digitizing isolated amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204613667U true CN204613667U (en) | 2015-09-02 |
Family
ID=53966208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520288258.6U Expired - Fee Related CN204613667U (en) | 2015-05-06 | 2015-05-06 | A kind of digitizing isolated amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204613667U (en) |
-
2015
- 2015-05-06 CN CN201520288258.6U patent/CN204613667U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20190506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |