CN104852737A - 4-channel low-distortion analog-to-digital conversion driving device - Google Patents
4-channel low-distortion analog-to-digital conversion driving device Download PDFInfo
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- CN104852737A CN104852737A CN201510207926.2A CN201510207926A CN104852737A CN 104852737 A CN104852737 A CN 104852737A CN 201510207926 A CN201510207926 A CN 201510207926A CN 104852737 A CN104852737 A CN 104852737A
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Abstract
The invention discloses a 4-channel low-distortion analog-to-digital conversion driving device, which comprises an amplifier, an ADC module, a reference voltage source and a power input, wherein the amplifier comprises a signal input end, a negative electrode input end, an amplifying output end, a driving positive voltage end and a driving negative voltage end; the ADC module comprises an analog signal input end, a driving voltage end and a digital signal output end; and the reference voltage source comprises a voltage input end and an voltage output end. The 4-channel low-distortion analog-to-digital conversion driving device provided by the invention adopts a double-power-supply operational amplifier AD8599 with ultralow distortion and ultralow noise and a bandgap reference voltage source AD780 with ultrahigh precision, and can ensure that an AD7991 exerts a 4-channel analog-to-digital conversion effect.
Description
Technical field
The present invention relates to a kind of 4 passage low distortion analog-to-digital conversion drive units, belong 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.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention 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 used in the present invention 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: a kind of 4 passage low distortion analog-to-digital conversion drive units provided by the invention, 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 invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention 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 the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
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 |
|---|---|---|---|
| CN201510207926.2A CN104852737A (en) | 2015-04-29 | 2015-04-29 | 4-channel low-distortion analog-to-digital conversion driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207926.2A CN104852737A (en) | 2015-04-29 | 2015-04-29 | 4-channel low-distortion analog-to-digital conversion driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104852737A true CN104852737A (en) | 2015-08-19 |
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|---|---|---|---|
| CN201510207926.2A Pending CN104852737A (en) | 2015-04-29 | 2015-04-29 | 4-channel low-distortion analog-to-digital conversion driving device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001890A1 (en) * | 2008-07-04 | 2010-01-07 | St-Ericsson Sa | High speed voltage following device for analog-to-digital conversion system |
| CN102340137A (en) * | 2010-07-16 | 2012-02-01 | Ls产电株式会社 | Apparatus for protecting analog input module from overvoltage |
| CN103634008A (en) * | 2013-11-29 | 2014-03-12 | 深圳市虹远通信有限责任公司 | Multi-channel signal collecting device and collecting method |
| CN204633756U (en) * | 2015-04-29 | 2015-09-09 | 苏州固基电子科技有限公司 | A kind of 4 passage low distortion analog-to-digital conversion drive units |
-
2015
- 2015-04-29 CN CN201510207926.2A patent/CN104852737A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001890A1 (en) * | 2008-07-04 | 2010-01-07 | St-Ericsson Sa | High speed voltage following device for analog-to-digital conversion system |
| CN102340137A (en) * | 2010-07-16 | 2012-02-01 | Ls产电株式会社 | Apparatus for protecting analog input module from overvoltage |
| CN103634008A (en) * | 2013-11-29 | 2014-03-12 | 深圳市虹远通信有限责任公司 | Multi-channel signal collecting device and collecting method |
| CN204633756U (en) * | 2015-04-29 | 2015-09-09 | 苏州固基电子科技有限公司 | A kind of 4 passage low distortion analog-to-digital conversion drive units |
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Application publication date: 20150819 |