CN204633755U - A kind of couple differential signals modulus device - Google Patents
A kind of couple differential signals modulus device Download PDFInfo
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- CN204633755U CN204633755U CN201520185830.6U CN201520185830U CN204633755U CN 204633755 U CN204633755 U CN 204633755U CN 201520185830 U CN201520185830 U CN 201520185830U CN 204633755 U CN204633755 U CN 204633755U
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- amplifier
- input
- resistance
- signal
- differential signals
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Abstract
The utility model discloses a kind of couple differential signals modulus device, comprise amplifier, ADC module, resistance, input end of analog signal, described amplifier comprises the first amplifier, second amplifier, described ADC module comprises the first signal input part, secondary signal input, signal output part, described input end of analog signal is connected with the first amplifier anode input by resistance, described first amplifier negative input is connected with the second amplifier negative input, described second amplifier anode input passes through grounding through resistance, described first amplifier, the output of the second amplifier respectively with the first signal input part, secondary signal input is connected, all resistance is parallel with between the negative input of described first amplifier, the second amplifier, output.A kind of couple differential signals modulus device that the utility model provides, the design is the differential drive arrangement of a binary channels, low-power consumption, low noise, low distortion.
Description
Technical field
The utility model relates to a kind of couple differential signals modulus device, belongs to circuit engineering field.
Background technology
At present, in existing instrument and meter analog-to-digital conversion drive circuit, require that drive circuit can provide sufficient settling time and Low ESR.But often because analog input signal buffering is not enough, cause the problem such as the distortion of analog-to-digital conversion module height, noise height.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of couple differential signals modulus device.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of couple differential signals modulus device, comprise amplifier, ADC module, resistance, input end of analog signal, described amplifier comprises the first amplifier, second amplifier, described ADC module comprises the first signal input part, secondary signal input, signal output part, described input end of analog signal is connected with the first amplifier anode input by resistance, described first amplifier negative input is connected with the second amplifier negative input, described second amplifier anode input passes through grounding through resistance, described first amplifier, the output of the second amplifier respectively with the first signal input part, secondary signal input is connected, all resistance is parallel with between the negative input of described first amplifier, the second amplifier, output, resistance is parallel with between described first amplifier anode input and the second amplifier out, described first amplifier driving voltage is set to+12V, and described second amplifier driving voltage is set to-12V.
Resistance is parallel with between described first amplifier, the second amplifier negative input.
Preferably, described amplifier adopts AD8022.
Preferably, described ADC module adopts AD7266.
Preferably, the signal voltage of described input end of analog signal is set to-2.5V to+2.5V.
Beneficial effect: a kind of couple differential signals modulus device that the utility model provides, adopts double operational to analog input differential signal being coupled directly to AD7266.The design is the differential drive arrangement of a binary channels, low-power consumption, low noise, low distortion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of couple differential signals modulus device, comprise amplifier 1, ADC module 2, resistance 3, input end of analog signal 4, described amplifier comprises the first amplifier 11, second amplifier 12, described ADC module 2 comprises the first signal input part 21, secondary signal input 22, signal output part 23, described input end of analog signal 4 is connected with the first amplifier 11 electrode input end by resistance 3, described first amplifier 11 negative input is connected with the second amplifier 12 negative input, described second amplifier 12 electrode input end is by resistance 3 ground connection, described first amplifier 11, the output of the second amplifier 12 respectively with the first signal input part 21, secondary signal input 22 is connected, resistance 3 is all parallel with between the negative input of described first amplifier 11, second amplifier 12, output, resistance 3 is parallel with between described first amplifier 11 electrode input end and the second amplifier 12 output, described first amplifier 11 driving voltage is set to+12V, and described second amplifier 12 driving voltage is set to-12V.
Resistance 3 is parallel with between described first amplifier 11, second amplifier 12 negative input.
Preferably, described amplifier 1 adopts AD8022.
Preferably, described ADC module 2 adopts AD7266.
Preferably, the signal voltage of described input end of analog signal 4 is set to-2.5V to+2.5V.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. a couple differential signals modulus device, comprise amplifier, ADC module, it is characterized in that: also comprise resistance, input end of analog signal, described amplifier comprises the first amplifier, second amplifier, described ADC module comprises the first signal input part, secondary signal input, signal output part, described input end of analog signal is connected with the first amplifier anode input by resistance, described first amplifier negative input is connected with the second amplifier negative input, described second amplifier anode input passes through grounding through resistance, described first amplifier, the output of the second amplifier respectively with the first signal input part, secondary signal input is connected, all resistance is parallel with between the negative input of described first amplifier, the second amplifier, output, resistance is parallel with between described first amplifier anode input and the second amplifier out, described first amplifier driving voltage is set to+12V, and described second amplifier driving voltage is set to-12V.
2. a kind of couple differential signals modulus device according to claim 1, is characterized in that: be parallel with resistance between described first amplifier, the second amplifier negative input.
3. a kind of couple differential signals modulus device according to claim 1, is characterized in that: described amplifier adopts AD8022.
4. a kind of couple differential signals modulus device according to claim 1, is characterized in that: described ADC module adopts AD7266.
5. a kind of couple differential signals modulus device according to claim 1, is characterized in that: the signal voltage of described input end of analog signal is set to-2.5V to+2.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520185830.6U CN204633755U (en) | 2015-03-31 | 2015-03-31 | A kind of couple differential signals modulus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520185830.6U CN204633755U (en) | 2015-03-31 | 2015-03-31 | A kind of couple differential signals modulus device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633755U true CN204633755U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520185830.6U Expired - Fee Related CN204633755U (en) | 2015-03-31 | 2015-03-31 | A kind of couple differential signals modulus device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204633755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779956A (en) * | 2015-03-31 | 2015-07-15 | 苏州固基电子科技有限公司 | Differential signal coupling analog-digital device |
-
2015
- 2015-03-31 CN CN201520185830.6U patent/CN204633755U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779956A (en) * | 2015-03-31 | 2015-07-15 | 苏州固基电子科技有限公司 | Differential signal coupling analog-digital device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160331 |