CN203761367U - Multi-channel isolating device with signal isolating function - Google Patents
Multi-channel isolating device with signal isolating function Download PDFInfo
- Publication number
- CN203761367U CN203761367U CN201420156895.3U CN201420156895U CN203761367U CN 203761367 U CN203761367 U CN 203761367U CN 201420156895 U CN201420156895 U CN 201420156895U CN 203761367 U CN203761367 U CN 203761367U
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- CN
- China
- Prior art keywords
- resistance
- isolating
- variable gain
- gain amplifier
- isolator
- 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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Abstract
The utility model discloses a multi-channel isolating device with a signal isolating function. The multi-channel isolating device with the signal isolating function comprises a digital control gain amplifying circuit and an isolating circuit, wherein the digital control gain amplifying circuit comprises a variable gain amplifier (U1), an isolating power source (5V) and an isolating ground (GND); the variable gain amplifier (U1) is connected with the isolating power source (5V) and the isolating ground (GND); the variable gain amplifier (U1) is connected with the isolating ground (GND) through a first resistor (R1) and a second resistor (R2); an isolating circuit consists of a four-channel digital isolator (U2); and the four-channel digital isolator (U2) is electrically connected with the variable gain amplifier (U1). By using the multi-channel isolating device, a magneto-electricity isolation effect is achieved. Control signals are completely isolated from the multi-channel isolating device; any influences caused by a preceding circuit are avoided; and the multi-channel isolating device is powered by the isolating power source, so that a signal output is completely isolated from a signal input electrically.
Description
Technical field
The utility model relates to a kind of signal isolating device, is specifically related to a kind of multichannel spacer assembly for signal isolation.
Background technology
No matter be at computer or other electronic equipment now, realizing various functions is all by the acquisition and processing to signal, when on many signals collecting transmission, be easy to be subject to circuit self and the mutual impact of collection signal, will cause error in data like this, cause the misjudgment of processing mode; People mainly make signal avoid being subject to the impact of various irrelevant factors by Signal Isolation Technology at present, existing signal isolation is all to carry out practical function with optical coupling technology mostly, but the linear isolation bandwidth of photoelectric coupling, only in the scope of several megahertzes, just cannot meet for the signal of high request in actual applications.
Summary of the invention
For addressing the above problem, the utility model proposes a kind of use between input that electromagnetic isolation makes signal and output and arrive isolation, there is the multichannel spacer assembly for signal isolation of the advantages such as frequency bandwidth is wide simultaneously.
Multichannel spacer assembly for signal isolation of the present utility model, comprises digital control gain amplifying circuit and buffer circuit; Described digital control gain amplifying circuit comprises variable gain amplifier (U1), insulating power supply (5V) and (GND) isolator; (GND's described variable gain amplifier (U1)) is connected with isolator with insulating power supply (5V); By the first resistance (R1), (GND's described variable gain amplifier (U1)) is connected with isolator with the second resistance (R2); Described variable gain amplifier (U1) is connected with the biasing circuit consisting of the 5th resistance (R5) and the 3rd resistance (R3); (GND's described the 5th resistance (R5)) is connected with isolator with insulating power supply (5V) respectively with the 3rd resistance (R3); Described variable gain amplifier (U1) is also connected with the 4th resistance (R4); Described buffer circuit consists of four-way digital isolator (U2); Described four-way digital isolator (U2) and variable gain amplifier (U1) Electricity Federation.
Further, described variable gain amplifier (U1) is LMH6518 type variable gain amplifier.
Further, described four-way digital isolator (U2) is ADUM4400 type four-way digital isolator.
Further, the resistance of described the first resistance (R1), the second resistance (R2), the 3rd resistance (R3) and the 5th resistance (R5) is 1k Ω.
Further, the resistance of described the 4th resistance (R4) is 100 Ω.
The utility model compared with prior art, it has following beneficial effect: a kind of use between input that electromagnetic isolation makes signal and output of the present utility model arrives isolation, has the multichannel spacer assembly for signal isolation of the advantages such as frequency bandwidth is wide simultaneously; The utility model adopts magnetoelectricity isolation, and control signal and the utility model are isolated completely, has avoided any impact of being brought by front stage circuits, powers by insulating power supply simultaneously, makes the output of signal reach electrical equipment completely with input and isolates.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
In figure: U1, variable gain amplifier; 5V, insulating power supply; GND, isolator; R1, the first resistance; R2, the second resistance; R5, the 5th resistance; R4, the 4th resistance; R3, the 3rd resistance; U2, four-way digital isolator.
Embodiment
A kind of multichannel spacer assembly for signal isolation as shown in Figure 1, comprises digital control gain amplifying circuit and buffer circuit; Described digital control gain amplifying circuit comprises variable gain amplifier (U1), insulating power supply (5V) and (GND) isolator; (GND's described variable gain amplifier (U1)) is connected with isolator with insulating power supply (5V); By the first resistance (R1), (GND's described variable gain amplifier (U1)) is connected with isolator with the second resistance (R2); Described variable gain amplifier (U1) is connected with the biasing circuit consisting of the 5th resistance (R5) and the 3rd resistance (R3); (GND's described the 5th resistance (R5)) is connected with isolator with insulating power supply (5V) respectively with the 3rd resistance (R3); Described variable gain amplifier (U1) is also connected with the 4th resistance (R4); Described buffer circuit consists of four-way digital isolator (U2); Described four-way digital isolator (U2) and variable gain amplifier (U1) Electricity Federation.
Wherein, described variable gain amplifier (U1) is LMH6518 type variable gain amplifier; Described four-way digital isolator (U2) is ADUM4400 type four-way digital isolator; The resistance of described the first resistance (R1), the second resistance (R2), the 3rd resistance (R3) and the 5th resistance (R5) is 1k Ω; The resistance of described the 4th resistance (R4) is 100 Ω.
A kind of use between input that electromagnetic isolation makes signal and output of the present utility model arrives isolation, has the multichannel spacer assembly for signal isolation of the advantages such as frequency bandwidth is wide simultaneously; The utility model adopts magnetoelectricity isolation, and control signal and the utility model are isolated completely, has avoided any impact of being brought by front stage circuits, powers by insulating power supply simultaneously, makes the output of signal reach electrical equipment completely with input and isolates.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection range of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (5)
1. for a multichannel spacer assembly for signal isolation, it is characterized in that: comprise digital control gain amplifying circuit and buffer circuit; Described digital control gain amplifying circuit comprises variable gain amplifier (U1), insulating power supply (5V) and (GND) isolator; (GND's described variable gain amplifier (U1)) is connected with isolator with insulating power supply (5V); By the first resistance (R1), (GND's described variable gain amplifier (U1)) is connected with isolator with the second resistance (R2); Described variable gain amplifier (U1) is connected with the biasing circuit consisting of the 5th resistance (R5) and the 3rd resistance (R3); (GND's described the 5th resistance (R5)) is connected with isolator with insulating power supply (5V) respectively with the 3rd resistance (R3); Described variable gain amplifier (U1) is also connected with the 4th resistance (R4); Described buffer circuit consists of four-way digital isolator (U2); Described four-way digital isolator (U2) and variable gain amplifier (U1) Electricity Federation.
2. the multichannel spacer assembly for signal isolation according to claim 1, is characterized in that: described variable gain amplifier (U1) is LMH6518 type variable gain amplifier.
3. the multichannel spacer assembly for signal isolation according to claim 1, is characterized in that: described four-way digital isolator (U2) is ADUM4400 type four-way digital isolator.
4. the multichannel spacer assembly for signal isolation according to claim 1, is characterized in that: the resistance of described the first resistance (R1), the second resistance (R2), the 3rd resistance (R3) and the 5th resistance (R5) is 1k Ω.
5. the multichannel spacer assembly for signal isolation according to claim 1, is characterized in that: the resistance of described the 4th resistance (R4) is 100 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156895.3U CN203761367U (en) | 2014-04-02 | 2014-04-02 | Multi-channel isolating device with signal isolating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156895.3U CN203761367U (en) | 2014-04-02 | 2014-04-02 | Multi-channel isolating device with signal isolating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761367U true CN203761367U (en) | 2014-08-06 |
Family
ID=51256597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420156895.3U Expired - Fee Related CN203761367U (en) | 2014-04-02 | 2014-04-02 | Multi-channel isolating device with signal isolating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761367U (en) |
-
2014
- 2014-04-02 CN CN201420156895.3U patent/CN203761367U/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: 20140806 Termination date: 20170402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |