CN204633756U - A kind of 4 passage low distortion analog-to-digital conversion drive units - Google Patents
A kind of 4 passage low distortion analog-to-digital conversion drive units Download PDFInfo
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- CN204633756U CN204633756U CN201520264556.1U CN201520264556U CN204633756U CN 204633756 U CN204633756 U CN 204633756U CN 201520264556 U CN201520264556 U CN 201520264556U CN 204633756 U CN204633756 U CN 204633756U
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- voltage
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- analog
- digital conversion
- low distortion
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Abstract
The utility model discloses a kind of 4 passage low distortion analog-to-digital conversion drive units, comprise amplifier, ADC module, reference voltage source, power supply input, described amplifier comprises signal input part, negative input, amplification output, drives positive voltage terminal, drives negative voltage side, described ADC module comprises input end of analog signal, driving voltage end, digital signal output end, described reference voltage source comprises voltage input end, voltage output end.The one 4 passage low distortion analog-to-digital conversion drive unit that the utility model provides, adopts ultra-low-distortion, ultra-low noise duplicate supply operational amplifier AD8599 and superhigh precision bandgap voltage reference AD780, can guarantee that AD7991 has given play to 4 passage analog-to-digital conversion effects.
Description
Technical field
The utility model relates to a kind of 4 passage low distortion analog-to-digital conversion drive units, belongs to circuit engineering field.
Background technology
At present, existing multichannel analog to digital conversion circuit flexibility is not enough, cannot realize the rapid Design of circuit between single channel and multichannel.And multichannel is long for settling time, the signal of high impedance and harmonic distortion cannot be processed.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of 4 passage low distortion analog-to-digital conversion drive units.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of 4 passage low distortion analog-to-digital conversion drive units, comprise amplifier, ADC module, reference voltage source, power supply inputs, described amplifier comprises signal input part, negative input, amplify output, drive positive voltage terminal, drive negative voltage side, described ADC module comprises input end of analog signal, driving voltage end, digital signal output end, described reference voltage source comprises voltage input end, voltage output end, described amplification output is connected with input end of analog signal, negative input is connected with amplification output, described driving positive voltage terminal is connected with power supply input, negative voltage side is driven to be connected with power supply input, described voltage input end is connected with power supply input, and voltage output end is connected with input end of analog signal, described driving voltage end is connected with power supply input.
Described input end of analog signal is set to 4 passages.
Also comprise decoupling capacitor, between described voltage output end and input end of analog signal, be parallel with decoupling capacitor.
Preferably, described amplifier adopts AD8599.
Preferably, described ADC module adopts AD7991.
Preferably, described reference voltage source adopts AD780.
Beneficial effect: the one 4 passage low distortion analog-to-digital conversion drive unit that the utility model provides, adopt ultra-low-distortion, ultra-low noise duplicate supply operational amplifier AD8599 and superhigh precision bandgap voltage reference AD780, can guarantee that AD7991 has given play to 4 passage analog-to-digital conversion effects.
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 4 passage low distortion analog-to-digital conversion drive units, comprise amplifier 1, ADC module 2, reference voltage source 3, power supply input 4, described amplifier 1 comprises signal input part 11, negative input 12, amplify output 13, drive positive voltage terminal 14, drive negative voltage side 15, described ADC module 2 comprises input end of analog signal 21, driving voltage end 22, digital signal output end 23, described reference voltage source 3 comprises voltage input end 31, voltage output end 32, described amplification output 13 is connected with input end of analog signal 21, negative input 12 is connected with amplification output 13, described driving positive voltage terminal 14 and power supply input 4 and are connected, drive negative voltage side 15 to input 4 with power supply to be connected, described voltage input end 31 and power supply input 4 and are connected, and voltage output end 32 is connected with input end of analog signal 21, described driving voltage end 22 and power supply input 4 and are connected.
Described input end of analog signal 21 is set to 4 passages.
Also comprise decoupling capacitor 5, between described voltage output end 32 and input end of analog signal 21, be parallel with decoupling capacitor 5.
Preferably, described amplifier 1 adopts AD8599.
Preferably, described ADC module 2 adopts AD7991.
Preferably, described reference voltage source 3 adopts AD780.
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 (6)
1. a passage low distortion analog-to-digital conversion drive unit, comprise amplifier, ADC module, it is characterized in that: also comprise reference voltage source, power supply inputs, described amplifier comprises signal input part, negative input, amplify output, drive positive voltage terminal, drive negative voltage side, described ADC module comprises input end of analog signal, driving voltage end, digital signal output end, described reference voltage source comprises voltage input end, voltage output end, described amplification output is connected with input end of analog signal, negative input is connected with amplification output, described driving positive voltage terminal is connected with power supply input, negative voltage side is driven to be connected with power supply input, described voltage input end is connected with power supply input, and voltage output end is connected with input end of analog signal, described driving voltage end is connected with power supply input.
2. a kind of 4 passage low distortion analog-to-digital conversion drive units according to claim 1, is characterized in that: described input end of analog signal is set to 4 passages.
3. a kind of 4 passage low distortion analog-to-digital conversion drive units according to claim 1, is characterized in that: described amplifier adopts AD8599.
4. a kind of 4 passage low distortion analog-to-digital conversion drive units according to claim 1, is characterized in that: described ADC module adopts AD7991.
5. a kind of 4 passage low distortion analog-to-digital conversion drive units according to claim 1, is characterized in that: described reference voltage source adopts AD780.
6. a kind of 4 passage low distortion analog-to-digital conversion drive units according to claim 1, is characterized in that: also comprise decoupling capacitor, are parallel with decoupling capacitor between described voltage output end and input end of analog signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264556.1U CN204633756U (en) | 2015-04-29 | 2015-04-29 | A kind of 4 passage low distortion analog-to-digital conversion drive units |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264556.1U CN204633756U (en) | 2015-04-29 | 2015-04-29 | A kind of 4 passage low distortion analog-to-digital conversion drive units |
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| Publication Number | Publication Date |
|---|---|
| CN204633756U true CN204633756U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520264556.1U Expired - Fee Related CN204633756U (en) | 2015-04-29 | 2015-04-29 | A kind of 4 passage low distortion analog-to-digital conversion drive units |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852737A (en) * | 2015-04-29 | 2015-08-19 | 苏州固基电子科技有限公司 | 4-channel low-distortion analog-to-digital conversion driving device |
-
2015
- 2015-04-29 CN CN201520264556.1U patent/CN204633756U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852737A (en) * | 2015-04-29 | 2015-08-19 | 苏州固基电子科技有限公司 | 4-channel low-distortion analog-to-digital conversion driving 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 |
Granted publication date: 20150909 Termination date: 20160429 |