CN204539606U - A kind of high-speed digital video camera circuit board - Google Patents
A kind of high-speed digital video camera circuit board Download PDFInfo
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- CN204539606U CN204539606U CN201420835930.4U CN201420835930U CN204539606U CN 204539606 U CN204539606 U CN 204539606U CN 201420835930 U CN201420835930 U CN 201420835930U CN 204539606 U CN204539606 U CN 204539606U
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Abstract
The utility model proposes a kind of high-speed digital video camera circuit board, according to the contact between electronic component circuit function and each functional module thereof, disposable plates is divided into analog circuit area, digital circuit district, clock circuit district, analog electrical source region and digital power district, each working region physical isolation, by rational deployment power circuit and ground wire, reduce the impact of interference on analog circuit, reduce digital circuit to the impact of analog circuit.Adopt the method for isolation and large area ground connection to reduce crosstalk, optimize signal routing, handle clock line, holding wire and ground wire well, by Signal Integrity Design, ensure high-speed digital circuit performance.This high-speed digital video camera circuit board can take into account analog circuit and digital circuit, improves the performance of high speed analog circuit and high-speed digital circuit, in the practical application of high-speed digital video camera circuit design, achieve good result.
Description
Technical field
The utility model relates to field of circuit boards, particularly relates to high-speed digital video camera circuit board.
Background technology
Along with the development of electronic technology, circuit board operating clock rate improves constantly, and the high-speed interface between device and device gets more and more, and speed has reached GHz level.Need digital-to-analogue/analog-to-digital conversion due to signal transacting, plate often exists high-speed digital circuit and high frequency analog circuits simultaneously.When board clock speed is higher, the mutual interference existed between various high speed device is very large on circuit impact, and the place and route of circuit must follow certain principle.Analog circuit is large to the sensitivity of noise, and any small interference all can affect the quality of signal, and in high-speed digital video camera circuit board, high-speed digital signal and Switching Power Supply are a kind of noise sources of analog signal.Because interference source major part is by ground wire, power line and electromagnetic interference produce, and the noise jamming that ground wire causes is maximum, so in high-speed digital video camera circuit board, to ground wire, the design of power line and HW High Way is just extremely important.In the placement-and-routing of high-speed digital circuit, then emphasis considers signal integrity, realizes high speed data transfer.
In order to ensure circuit performance, in high-speed digital video camera board design, particular/special requirement is had to ground wire, power transmission line and HW High Way, the noise coupling between isolation analogy and digital circuit must be taken into full account, the electromagnetic interference that Switching Power Supply is brought to analog circuit, which increases the complexity of place and route during design.In traditional high-speed digital video camera board design, between functional module, physical isolation is inadequate, be separated with digitally not yet in effect in analog, Power Management Design does not fully take into account the feature of analog circuit and digital circuit, cause on ground wire and power line and produce interference source, directly affect the service behaviour of analog circuit.
Summary of the invention
The purpose of this utility model is to propose a kind of high-speed digital video camera circuit board, pass through zoning, disposable plates is divided into analog circuit area, digital circuit district, clock circuit district, analog electrical source region and digital power district, particular design is carried out to the ground wire of circuit board and power line, reduce interference source to the impact of analog circuit, improve analog circuit performance, by Signal Integrity Design, ensure the electrical property of high-speed digital circuit.
For achieving the above object, the technical scheme that the utility model high speed digital signal processing circuit plate adopts is, electronic devices and components are according to the contact between circuit function and each functional module thereof, be distributed in the different operating region of high-speed digital video camera circuit board, pass through zoning, disposable plates is divided into analog circuit area, digital circuit district, clock circuit district, analog electrical source region and digital power district, isolation design is carried out to the ground wire of circuit board and power line, by stratum segmentation isolation in analog and digitally, reduce grounding interference to the impact of analog circuit, improve analog circuit performance, Signal Integrity Design is adopted to digital circuit, ensure the electrical property of high-speed digital circuit.
The beneficial effects of the utility model are, by rational deployment analog circuit, digital circuit and power circuit, reduce Interference from the power supply wire to the impact of analog circuit, this high-speed digital video camera circuit board can take into account analog circuit and digital circuit, reduce ground wire and Interference from the power supply wire, improve the performance of high speed analog circuit and high-speed digital circuit, in the practical application of high-speed digital video camera circuit design, achieve good result.
Accompanying drawing explanation
Fig. 1 is high-speed digital video camera circuit board figure.
Fig. 2 is high-speed digital video camera circuit board stratum segmentation figure.
1. analog circuit region, 2. digital circuitry regions, 3. clock circuit region, 4. digital power region, 5. analog power region in figure, 6. stratum segmentation.
Embodiment
In order to can clearer understanding technology contents of the present utility model, describe in detail especially exemplified by following examples.
High-speed digital video camera circuit board as shown in Figure 1, on plate, each circuit and device are distributed in zones of different according to its function, electrical characteristic and architectural characteristic, analog circuit and digital circuit are separately, analog circuit ground and digital circuit Ground Split, each circuit and device uniform layout, whole circuit board is divided into analog circuit region (1), digital circuitry regions (2), clock circuit region (3), digital power region (4) and analog power region (5).
Analog circuit region (1) comprises high-speed ADC and high-speed DAC, realize digital-to-analogue and analog-to-digital conversion, analog power region (5) provides power supply for analog circuit region (1), these two regions, away from digital circuitry regions (2), prevent digital signal to the interference of analog signal.Digital circuit district (2) and digital power region (4) layout are together, clock circuit region (3) in the middle of analog circuit region (1) and digital circuitry regions (2), for it provides high-speed clock signal.Digital power region (4) provides high stable voltage and big current, by it near high power device, and will away from analog circuit region, in order to avoid cause signal contamination.Digital circuitry regions (2) adopts the method for isolation and large area ground connection to reduce crosstalk, improves circuit performance.
As shown in Figure 2, interference between analog input, output signal can be reduced in stratum segmentation (6), reduce digital signal to the interference of analog signal, by stratum segmentation (6), effectively can reduce and be coupled to noise in analog circuit and electric source disturbance, reduce noise and electric source disturbance to the impact of analog circuit service behaviour.
By above-mentioned series of measures, this high-speed digital video camera circuit board can take into account analog circuit region and digital circuitry regions, reduce ground wire and Interference from the power supply wire, the larger circuit characteristic improving high-speed digital signal processing card, achieves good effect in actual applications.
Claims (2)
1. a high-speed digital video camera circuit board, it is characterized in that: pass through zoning, disposable plates is divided into analog circuit area, digital circuit district, clock circuit district, analog electrical source region and digital power district, isolation design is carried out to the ground wire of circuit board and power line, isolated in analog by stratum segmentation and digitally, reduce grounding interference to the impact of analog circuit, improve analog circuit performance, Signal Integrity Design is adopted to digital circuit, ensures the electrical property of high-speed digital circuit.
2. high-speed digital video camera circuit board according to claim 1, is characterized in that: physical isolation between regional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420835930.4U CN204539606U (en) | 2014-12-26 | 2014-12-26 | A kind of high-speed digital video camera circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420835930.4U CN204539606U (en) | 2014-12-26 | 2014-12-26 | A kind of high-speed digital video camera circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204539606U true CN204539606U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420835930.4U Expired - Fee Related CN204539606U (en) | 2014-12-26 | 2014-12-26 | A kind of high-speed digital video camera circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204539606U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024873A (en) * | 2016-02-01 | 2017-08-08 | 联发科技股份有限公司 | Integrated circuit, electronic equipment and data transmission method |
| CN107484344A (en) * | 2017-08-30 | 2017-12-15 | 中国航空无线电电子研究所 | PCB layout methods based on acp chip PIN |
| CN109688693A (en) * | 2018-12-26 | 2019-04-26 | 广州中海达卫星导航技术股份有限公司 | A kind of pcb board, pcb board and data radio station based on data radio station |
| CN110545618A (en) * | 2019-08-19 | 2019-12-06 | 闻泰通讯股份有限公司 | Circuit board structure |
| CN111885823A (en) * | 2020-07-31 | 2020-11-03 | 上海卫星工程研究所 | Double-super-satellite platform magnetic suspension PCB ground wire connecting system |
| CN111901981A (en) * | 2020-08-07 | 2020-11-06 | 安徽华东光电技术研究所有限公司 | Manufacturing method of photoelectric conversion module |
| CN114627744A (en) * | 2022-03-18 | 2022-06-14 | 深圳市天辰防务通信技术有限公司 | Console simulation device |
-
2014
- 2014-12-26 CN CN201420835930.4U patent/CN204539606U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024873A (en) * | 2016-02-01 | 2017-08-08 | 联发科技股份有限公司 | Integrated circuit, electronic equipment and data transmission method |
| CN107024873B (en) * | 2016-02-01 | 2019-02-05 | 联发科技股份有限公司 | Integrated circuit, electronic equipment and data transmission method |
| CN107484344A (en) * | 2017-08-30 | 2017-12-15 | 中国航空无线电电子研究所 | PCB layout methods based on acp chip PIN |
| CN107484344B (en) * | 2017-08-30 | 2019-10-01 | 中国航空无线电电子研究所 | PCB layout method based on core chips PIN foot |
| CN109688693A (en) * | 2018-12-26 | 2019-04-26 | 广州中海达卫星导航技术股份有限公司 | A kind of pcb board, pcb board and data radio station based on data radio station |
| CN109688693B (en) * | 2018-12-26 | 2021-08-10 | 广州中海达卫星导航技术股份有限公司 | PCB, PCB based on data transmission radio station and data transmission radio station |
| CN110545618A (en) * | 2019-08-19 | 2019-12-06 | 闻泰通讯股份有限公司 | Circuit board structure |
| CN110545618B (en) * | 2019-08-19 | 2023-09-19 | 闻泰通讯股份有限公司 | Circuit board structure |
| CN111885823A (en) * | 2020-07-31 | 2020-11-03 | 上海卫星工程研究所 | Double-super-satellite platform magnetic suspension PCB ground wire connecting system |
| CN111885823B (en) * | 2020-07-31 | 2021-06-11 | 上海卫星工程研究所 | Double-super-satellite platform magnetic suspension PCB ground wire connecting system |
| CN111901981A (en) * | 2020-08-07 | 2020-11-06 | 安徽华东光电技术研究所有限公司 | Manufacturing method of photoelectric conversion module |
| CN114627744A (en) * | 2022-03-18 | 2022-06-14 | 深圳市天辰防务通信技术有限公司 | Console simulation 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: 20150805 Termination date: 20191226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |