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零晶體管IC-IC設計一個新高度

Abstract: We can apply a BiCMOS integrated circuit with only resistors and no transistors to solve adifficult design problem. The mythically perfect operational amplifier's gain and temperature coefficient aredependent on external resistor values. Maxim precision resistor arrays are manufactured together on asingle die and then automatically trimmed, to ensure close ratio matching. This guarantees that theoperational amplifier (op amp) gain and temperature coefficient are predictable and reliable, even withlarge production volumes.

標簽： IC-IC 零晶體管

上傳時間： 2014-11-30

上傳用戶：ynzfm
電阻式溫度隔離雙輸出傳送器

特點（FEATURES）精確度0.1%滿刻度（Accuracy 0.1%F.S.）多種輸入輸出選擇（Wide selection of input/output range）三線式接線自動補償線路阻抗效應（3 wire configuration automatically compensate line resistance effects）寬范圍交直流兩用電源設計（Wide input range for auxiliary power）尺寸小，穩定性高（Dimension small & High stability）

標簽： 電阻式溫度傳送器隔離

上傳時間： 2013-10-17

上傳用戶：Huge_Brother
如何保護集成FET的電源開關

Abstract: Some types of loads require more current during startup than when running. Other loads can be limited to a lower-powercurrent during startup but require a higher operating current. This article describes an application circuit that automatically adjusts apower circuit’s overcurrent protection level up or down after startup is complete.

標簽： FET 保護集成電源開關

上傳時間： 2013-10-23

上傳用戶：swaylong
基于單片機的顏色自適應識別電路

　　為解決電致變色器件的顏色變化受外界環境顏色控制的問題，設計了一種基于單片機的便攜式顏色自適應識別電路。與傳統顏色識別電路相比較，該電路利用數字式的顏色傳感器來獲取外界環境顏色，產生的數字顏色信號易于單片機進行處理。在電路中，下位機部分主要負責獲取電致變色器件變色參數及控制電致變色器件的顏色變化;而上位機部分主要負責把下位機獲取的電致變色器件變色參數進行電壓到顏色的曲線擬合，并通過藍牙通信把擬合曲線參數傳遞給下位機。結果表明，該電路能自動根據環境顏色提供-4~4 V范圍步進為0.1 V的電壓來驅動電致變色器件的顏色顯示，與傳統的顏色識別電路設計相比，識別的精度和速度都得到了明顯改善。　　Abstract: 　　In this paper， a portable adaptive circuit for color identification(PACCI) based on MCU was designed. Compared to the traditional color identification circuit， the PACCI adopts digital sensor to detect the color data from external environment and further generate digital color data， which can be processed easily by MCU. In PACCI， the slave is mainly responsible for detecting the color parameters of the corresponding elcreochromic device and further driving it. For the master， which is mainly responsible for the color curve fitting based on the parameters of the electrochromic device， and transmits the fitting parameters to the slave through the bluetooth device. The results show that the PACCI can provide the basis voltage range from -4V to 4V automatically based on the colors of external environment with step as 0.1V to drive the corresponding electrochromic device. Compared to the traditional color recognition circuit， the recognition accuracy and speed of PACCI have been improved significantly.

標簽： 單片機識別電路

上傳時間： 2013-11-09

上傳用戶：franktu
基于AT89S52單片機的多功能音樂播放器

介紹一種多功能音樂播放器，它是以AT89S52單片機為核心，并輔有一些外圍器件，采用匯編語言編寫程序，實現多功能音樂播放，歌曲自動循環播放和使用琴鍵自編曲目功能。此外，彩燈顯示歌曲節奏，按鍵跳轉到喜愛曲目，液晶顯示當前播英文曲目。并給出了系統軟硬件設計。 Abstract: It introduces a multifunctional music player,taking AT89S52 single-chip microcomputer as hardware control core and using some peripheral elements.Programmes are compiled in assembly language to act as expected.There are two functional modes in this system.One is to make the music play automatically and consecutively,the other is to compose new songs through keys.In addition,lights show the pace of music and the English names can be displayed in the liquid crystal screen.With perfect combination of hardware and software,the music player can meet many music lovers’needs for multifunctional music player.And the hardware and software of the system are given.

標簽： 89S S52 AT 89

上傳時間： 2013-11-18

上傳用戶：xiaodu1124
基于CC1110單片機公交報站系統的設計

基于CC1110單片機公交報站系統主要由CC1110單片機最小系統和WT588D語音模塊組成，提出了如何實現語音報站，通過無線通信SimpliciTI網絡協議實現公交站臺的自動播報和OLCD液晶顯示公交運行的各類信息。結果表明，該公交報站系統報站準確率99%，價格比同類產品下降了300%以上，系統組成結構簡單，提高了系統的抗干擾性和穩定性，也便于攜帶。 Abstract: The bus stop announcement system based on CC1110 MCU is composed of CC1110 MCU minimum system and WT588D voice module. How to achieve the voice announcing is put forward.The bus-stop will announce automatically and display on the OLCD by means of wireless communication SimpliciTI network protocol. As a result， the bus station stop announcement systems reported 99% accuracy rate， price of similar products declined by 300% or more， system of simple structure， improve the anti-jamming and stability of the power system， it is also portable.

標簽： 1110 CC 單片機公交報站

上傳時間： 2013-10-21

上傳用戶：baby25825
使用CCS進行DSP編程

CCStudio Platinum Edition is available in a number of ways. Existingcustomers who are up-to-date with their subscription service withTexas Instruments will receive their update automatically on a CD inthe mail. New customers who wish to purchase a copy of CCStudioPlatinum Edition can order TMDSCCSALL-1 starting May 23, 2005. A120-day Trial version will be also be available on CDROM startingJuly 11, 2005. Users may order the CDROM of the 120-day free copy

標簽： CCS DSP 編程

上傳時間： 2014-12-28

上傳用戶：gououo
Virtex-5 GTP Transceiver Wizar

The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts

標簽： Transceiver Virtex Wizar GTP

上傳時間： 2013-10-23

上傳用戶：leyesome
XAPP953-二維列序濾波器的實現

This application note describes the implementation of a two-dimensional Rank Order filter. Thereference design includes the RTL VHDL implementation of an efficient sorting algorithm. Thedesign is parameterizable for input/output precision, color standards, filter kernel size,maximum horizontal resolution, and implementation options. The rank to be selected can bemodified dynamically, and the actual horizontal resolution is picked up automatically from theinput synchronization signals. The design has a fully synchronous interface through the ce, clk,and rst ports.

標簽： XAPP 953 二維濾波器

上傳時間： 2013-12-14

上傳用戶：逗逗666
Design Safe Verilog State Machine（Synplicity）

One of the strengths of Synplify is the Finite State Machine compiler. This is a powerfulfeature that not only has the ability to automatically detect state machines in the sourcecode, and implement them with either sequential, gray, or one-hot encoding. But alsoperform a reachability analysis to determine all the states that could possibly bereached, and optimize away all states and transition logic that can not be reached.Thus, producing a highly optimal final implementation of the state machine.

標簽： Synplicity Machine Verilog Design

上傳時間： 2013-10-20

上傳用戶：蒼山觀海