digital-to-analog circuit 中文意思是什麼
digital-to-analog circuit
解釋
數字模電路-
The hardware mainly consists of three parts : signal pre - amplifying and conditioning circuit is used to amplifying the microseismic signals which have detected, signal processing and target identifying circuit based on singlechip is used to convert the analog signals which have been amplified to digital signals and go through signal analysis, processing to identify the moving target, the sending and receiving setting is used to send the identifying result to the decision - making and he can take relevant action according to the result
硬體主要由三部分組成：信號調理電路對檢測到的微弱地震動信號進行放大；基於單片機的信號分析與目標識別電路將放大后的模擬信號進行a d轉換，進一步將得出的數字信號分析、處理，實現目標識別；識別結果發射與接收裝置將識別結果發射給決策者，由其根據接收結果採取相應的措施。 -
The dac consists of analog circuit blocks and digital circuit blocks, so it is a mixed signal circuit. because the digital part is simple comparatively, we use the same method as analog part to design it
採用模塊化的設計方式實現數據快速轉換，主要包括電流源矩陣模塊、鎖存模塊、譯碼模塊、帶隙基準電壓源模塊及電流開關網路等電路模塊。 -
Tms320vc549 is used as the core circuit, tle2064 amplifies the signals, tlc320ac02 converts the analog signal to the digital signal ( a / d ), tms320vc549 trains and recognizes the speech signals, and the circuit of lcd displays the result
整個系統以tms320vc549為核心電路進行設計， tle2064進行放大， tlc320ac02進行a d轉換， tmcs30vc549進行訓練和識別語音信號，由lcd顯示結果。 -
The design of high - voltage circuit based on pwm technology is briefly described. the closed - loop current control theory using analog instruments is fully discussed, followed which is that using digital instruments. it is an important part that the hardware and software design of the single chip - two arms and two chips - two arms current control circuits with a new chip applicable to digital current control system
簡單介紹了基於開關電源技術的高壓電路設計；詳細講述了模擬穩流電源的閉環穩流原理，並在此基礎上討論了利用數字電路實現穩流的原理及可能性；選擇出適合數字穩流系統的新型晶元，完成了單片雙路穩流系統、雙片雙路穩流系統的軟硬體設計；給出了一種簡單易實現的比例?積分控製程序。 -
Digital to analog converter, analog integrated filter, bandgap reference and high drive capability operational amplifier are indispensability basic circuit of communication system
數模轉換器、模擬集成濾波器、基準電壓源和高驅動能力運放等電路是通信系統中不可缺少的基本電路。 -
Thirdly, the range switch circuit and filter circuit are designed in the analog input channel. to realize the safe high speed acquisition, the interface circuits are separated from the function circuits, and the isolation power with high performance and digital isolator is used to restrain the common mode disturb and noise of the input
3 .模擬輸入通道設計有量程切換電路和濾波電路，並且採用了屏蔽、浮置技術和磁耦隔離技術，使用了高性能的隔離電源和磁電耦合器，有效地抑制了輸入信號的共模干擾和噪聲，實現了安全、高速的數據採集。 -
Finally, according to the mosfet ' s parameter degradation due to hot - carrier effects and different application environment of mos devices on analog and digital circuits, the circuit structures for hot - carrier immunity are proposed for digital applications by adding a schottky diode in series with the drain of the nmosfet suffered heavily from hot - carrier degradation.,
即在受熱載流子退化效應較嚴重的n mosfet漏極串聯一肖特基二極體的新型cmos數字電路結構和串聯一工作于線性區的常開n mosfet的mos模擬電路結構。經spice及電路可靠性模擬軟體bert2 -
Tms320c5402dsp was used in the design to replace six scm those was used in the automatic biochemical analyzer now and to control system, cpld epm7128 offer logic circuit to the system. a 16 - bits high - speed a / d conversion device a / d976a replaced a / d574 to complete digital - analog conversion
本系統設計中採用一片高性能的dsp （數字信號處理器） tms320c5402代替了目前生產的全自動生化分析儀的六個單片機完成系統控制，用可編程邏輯器件epm7128提供所需的邏輯信號，採用16位高速a d轉換器ad976a取代以往的ad574完成模數轉換。 -
The main works are as follows : 1 ) we made the mathematics model of mixed - signal circuits based on the des theory to make the circuit states discrete. so we can unite the digital part and the analog part of the circuit to research the testability and the fault detection
本文所做主要工作如下： 1 、本文利用des理論對數模混合電路進行數學建模，將電路狀態離散化，從而將電路的數字部分和模擬部分統一起來進行故障診斷和可測性分析。 -
For the purpose of testing the function of extended ports, digital - to - analog conversion and analog - to - digital conversion, an auxiliary experiment board is made, it includes analog signal outputs, switch signal outputs, led circuit, eight - segment nixie tubes and a digital - to - analog conversion circuit
為了驗證擴展口、 a d轉換和d a功能，還自己製作一個包括8路模擬量輸入、開關量輸入、 8路led 、 4個數碼管和d a轉換電路輔助電路板。 -
At the time of researching the principle of parallel - to - serial convert and digital - to - analog convert, this article analyzes characteristics of the high speed circuit, the problem of the circuit and the resolvent of the problem
本文在研究高速數據復接與d a轉換基本原理的同時，分析了高速電路的特點、存在的問題以及解決措施。 -
Nowadays, there are two kinds of implementation methods of chaotic signal generator. one kind is realized by analog line and it is very sensitive to circuit inherent parameters as well as signal recycled error, so it is relatively difficult to realize actually, the other kind is realized by digital line and it can generate well real - time discrete array, so it is more suitable for the application in communication
目前混沌信號發生器的實現方法有兩種:一種是由模擬電路實現，它對固有參數及信號再生的誤差很敏感，實際實現較困難;另一種是由數字電路實現，它產生的離散時間混沌序列實時性好，更適合在通信中應用。 -
In view of numerous digital and analog signals need to be processed, and the difficulty of real - time processing of multi channel 400 hz ac signal, vhdl ( vhsic hardware description language ) is applied to design the digital circuit, which is successfully realized in field programmable gates array ic - xc2s100
針對i o模塊中需要處理的數字量和模擬量較多的事實，以及多路400hz信號的實時處理較為繁重的現狀，作者採用了現場可編程門陣列（ fpga ）加以解決。 -
According to the project of the interfacing experimental apparatus, the hardware circuit of the control system with 89c51 single - chip microcomputer has been designed, which include the circuit from analog signal to digital signals and the circuit from digital signals to analog signals, the drive circuit of the electromagnetism ~ valve and servo - valve, the communication interface circuit between the single - chip microcomputer and pc and so on
對針對接實驗裝置的方案，設計了基於89c51單片機的控制系統硬體電路，其中包括a d轉換電路、 d a轉換電路、伺服閥驅動電路、電磁閥驅動電路、 pc機與單片機之間通訊的介面電路等，並完成了控制系統硬體電路的調試。 -
Dba design is to design the most part of circuit with digital arithmetic, leaving behind a few analog circuit
數字化模擬技術也就是利用數字演算法將大部分電路設計放在數字一邊，只留一小部分模擬電路。 -
Since this type of converter has little requirement for the digital parts and its digital structure is relative simple, the whole design approach of the converter is the same with the design flow of the analog circuit that is to draw schematics and layout manually, edit the drc lvs files to verify the layout and check its performance by means of post - simulation
由於本設計對數字電路部分的性能要求較寬松，而且電路結構相對簡單，所以採用和模擬電路設計一致的設計方法，即：使用原理圖輸入設計，全定製編輯版圖，對版圖進行drc ， lvs以及后模擬驗證。使用的是cadence中的一系列cad工具。 -
As a result, it is necessary to add a digital interface to trng which is realized by analog circuit
因此就需要為以模擬電路為核心的真隨機數發生器添加數字介面，以符合規定的總線協議標準。 -
In digital circuits the output state is determined by the input signals in as directa manner as the output voltage of an analog circuit is related to the input signal
在數字線路中，輸出狀態是由輸入信號決定的，就像這類線路的輸出電壓是與輸入信號有關的一樣直接。 -
High definition digital to analog converter and high performance analog integrated filter among a practical system of communication, during the research work, we gain a lot of new high performance circuits of digital to analog converter and analog integrated filters with enhancement of high characteristics and realization of new structure circuit, which have been successfully applied in communication integrated circuits, and receives better practical application effect
本文緊跟國際學術研究熱點，結合一實際通信系統中包括有上述基本單元電路，將對數模轉換器、濾波器以及基準源電路的研究重點放在了其高性能指標的提高以及新結構電路的實現上，得到了一系列高性能特性的數模轉換器、濾波器和基準電壓源電路。 -
The output circuit of feedback control signal by using a high resolution 16 bit digital to analog converters ( 16 bit dac ) which is kennel of chip dac703j, the data communication interface between microcomputer and computer by using the circuit of the ttl and rs - 232 voltage transform with the chip max232, are also designed
採用了dac703j晶元為主的高解析度16位d a轉換電路，設計了反饋控制信號輸出電路，採用max3232晶元為主的ttl電平與rs - 232電平轉換電路，設計了單片機與上級計算機數據通訊介面。
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