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Multi-Channel

  • IGBT圖解

    le flows through MOS channel while Ih flows across PNP transistor Ih= a/(1-a) le, IE-le+lh=1/(1-a)' le Since IGBT has a long base PNP, a is mainly determined by ar si0 2ar= 1/cosh(1/La), La: ambipolar diff length a-0.5 (typical value)p MOSFET channel current (saturation), le=U"Cox"W(2"Lch)"(Vc-Vth)le Thus, saturated collector current Ic, sat=1/(1-a)"le=-1/(1-a)"UCox"W/(2Lch)"(Vo-Vth)2Also, transconductance gm, gm= 1/(1-a)"u' Cox W/Lch*(Vo-Vth)Turn-On1. Inversion layer is formed when Vge>Vth2. Apply positive collector bias, +Vce3. Electrons flow from N+ emitter to N-drift layer providing the base current for the PNP transistor4. Since J1 is forward blased, hole carriers are injected from the collector (acts as an emitter).5. Injected hole carriers exceed the doping level of N-drift region (conductivity modulation). Turn-Off1. Remove gate bias (discharge gate)2. Cut off electron current (base current, le, of pnp transistor)

    標簽: igbt

    上傳時間: 2022-06-20

    上傳用戶:wangshoupeng199

  • 激光雷達測距新方法研究

    無掃描激光雷達測距成像技術和其他測距系統相比具有可對動態物體清晰成像,功耗低,體積小,成本低廉的優點。無論在軍事上,還是在民用上都有非常重要的地位,是激光需達的重點研究方向。本論文介紹了四種基于不同原理的無掃描激光雷達方案。其中基于脈沖增益調制法的無掃描激光雷達具有很強的創造性,該方案使用脈沖光源,脈沖光源發出脈沖光照射目標物體,經物體反射后由功能光接收器MCP(Micro Channel Plate)接收,對MCP施加線性增益調制,在MCP輸出端形成新的光場,由CCD(Charge Couple Device)接收.CCD輸出的圖像經圖像處理后得到二維圖像信息。該方案對背景光干擾不敏感,可成像距離遠,具有很大的研究價值。本文設計了一套模擬系統來驗證基于脈沖調制法的無掃描激光雷達測距方案的可行性,由于光電倍增管PMr(Photoelectric electron-multiplier tube)在功能上和MCP具有最大的相似性,所以模擬系統中功能光接收器采用光電倍增管。系統由激光驅動模塊、PMT驅動模塊、時序控制模塊、采樣接收模塊四個部分組成。我們利用自行研制的模擬系統進行了大量的模擬實驗,經過對實驗結果分析發現該模擬系統的測量距離可達到1千米,測量誤差在15米以內,表明了該方案是確實可行的。論文最后對誤差來源進行了分析,并對整個項目進行了總結和展望。

    標簽: 激光雷達 測距

    上傳時間: 2022-06-22

    上傳用戶:slq1234567890

  • EMMC5.1標準datasheet,存儲器標準手冊

    eMMC (Embedded Multi Media Card)是MMC協會訂立、主要針對手機或平板電腦等產品的內嵌式存儲器標準規格。eMMC在封裝中集成了一個控制器,提供標準接口并管理閃存,使得手機廠商就能專注于產品開發的其它部分,并縮短向市場推出產品的時間。MMC的應用是對存儲容量有較高要求的消費電子產品。2011年已大量生產的一些熱門產品,如Palm Pre、Amazon Kindle II和Flip MinoHD,都采用了eMMC。為了確認這些產品究竟使用了何種存儲器,iSuppli利用拆機分析業務對它們進行了拆解,發現eMMC身在其中。附件為介紹EMMC5.1標準的數據手冊.

    標簽: emmc 存儲器

    上傳時間: 2022-06-27

    上傳用戶:

  • pcie處理層協議中文詳解

    pcie(PCI-Express)處理層協議中文詳解處理層協議(transaction Layer specification)◆TLP概況。◆尋址定位和路由導向。◆i/o,.memory,configuration,message request、completion 詳解。◆請求和響應處理機制。◆virtual channel(ve)Mechanism虛擬通道機制。◆data integrity 數據完整性。一.TLP概況處理層(transaction Layer specification)是請求和響應信息形成的基礎。包括四種地址空間,三種處理類型,從下圖可以看出在transaction Layer中形成的包的基本概括。一類是對io口和memory的讀寫包(TLPS:transaction Layers packages),另一類是對配置寄存器的讀寫設置包,還有一類是信息包,描述通信狀態,作為事件的信號告知用戶。對memory的讀寫包分為讀請求包和響應包、寫請求包(不需要存儲器的響應包)。而io類型的讀寫請求都需要返回I/O口的響應包,

    標簽: pcie

    上傳時間: 2022-06-30

    上傳用戶:

  • 基于ICL8038等構成的函數發生器電路

    摘要:本系統以ICL8038集成塊為核心器件,制作一種函數信號發生器,制作成本較低。適合學生學習電子技術測量使用。ICL8038是一種具有多種波形輸出的精密振蕩集成電路,只需要個別的外部元件就能產生從0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脈沖信號。輸出波形的頻率和占空比還可以由電流或電阻控制。另外由于該芯片具有調制信號輸入端,所以可以用來對低頻信號進行頻率調制。關鍵詞:函數信號發生器頻率調制Abstract:The system ICL8038 integrated block as the core device,producing a kind of function signal generator,producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits,a separate external components only need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave,triangle wave,square wave pulse signal,etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition,as the chip has a modulated signal input terminal,it can be used to low-frequency signal is frequency modulation.

    標簽: icl8038 函數發生器 電路

    上傳時間: 2022-07-04

    上傳用戶:zhanglei193

  • MT2625 datasheet v1.2

    MT2625 DatasheetVersion: 1.2Release date: 31 January 2018NB-IoT transceiver? Compliant with 3GPP R13/R14 NB-IoT standard? Supports DL 200kHz bandwidth/UL single tone and multi-tone? Supported RF bands: B1/B2/B3/B5/B8/B11/B12/B13/B17/B18/B19/B20/B21/B25/B26/B28/B31/B66/B70/B71? Supports PSM and eDRX modeMicrocontroller subsystem? ARM? Cortex?-M4 with FPU and MPU? 14 DMA channels? One RTC timer, one 64-bit and five 32-bit general purpose timers? Development support: SWD, JTAG? Crypto engineo AES 128, 192, 256 bitso DES, 3DESo MD5, SHA-1, 224, 256, 384, 512? True random number generator? JTAG password protection

    標簽: MT2625

    上傳時間: 2022-07-04

    上傳用戶:

  • 激光測距芯片基于STM32的開發工具介紹與演示

    ? VL53L1X OverView? VL53L1X Software Package? Default and FAST mode? Ultra light driver.? VL53L1X GUI? VL53L1X Multi sensor design? STM32 FW: Import, Compile, Run, Debug…? What is Xtalk?? Cover Window and ID design? How about Human and object reflectance at 940 nm ?

    標簽: 激光測距芯片 stm32

    上傳時間: 2022-07-17

    上傳用戶:bluedrops

  • MT7628 Datasheet

    Overview The MT7628 router-on-a-chip includes an 802.11n MAC and baseband,a 2.4 GHz radio and FEM,a 575/580MHz MIPS? 24K% CPU core,a 5-port 10/100 fast ethernet switch. The MT7628 includes everything needed to build an AP router from a single chip. The embedded high performance CPU can process advanced applications effortlessly, such as routing, security and VolP. The MT7628 also includes a selection of interfaces to support a variety of applications, such as a USB port for accessing external storage.Features· Embedded MIPS24KEc(575/580 MHz) with 64KBl-Cache and 32 KB D-Cache·2T2R 2.4 GHz with 300 Mbps PHY data rate· Legacy 802.11b/g and HT 802.11n modes·20/40 MHz channel bandwidth· Reverse Data Grant(RDG)· Maximal Ratio Combining(MRC)· Space Time Block Coding(STBC)· MCM 8 Mbytes DDR1 KGD(MT7628KN)

    標簽: mt7628

    上傳時間: 2022-07-18

    上傳用戶:

  • AD5410、AD5420 datasheet

    Single-Channel,  Serial Input, 4 mA to20 mA, Current Source DAC, HART Connectivity

    標簽: AD5410 AD5420

    上傳時間: 2022-07-24

    上傳用戶:

  • MT7628手冊(英文版)

    The following table covers the main features offered by the MT7628KN and MT7628AN. Overall, the MT7628KN supports the requirements of an entry level AP/router, while the more advanced MT7628AN supports a number of interfaces together with a large maximum RAM capacity.Features· Embedded MIPS24KEc (575/580 MHz) with 64KBl-Cache and 32KB D-Cache·2T2R 2.4GHz with 300 Mbps PHY data rate· Legacy 802.11b/g and HT 802.11n modes·20/40 MHz channel bandwidth· Reverse Data Grant(RDG)· Maximal Ratio Combining(MRC)· Space Time Block Coding(STBC)· MCM 8 Mbytes DDR1 KGD(MT7628KN)·16-bit DDR1/2 up to 128/256 Mbytes(MT7628AN/KN)· SPI/SD-XC/eMMC·x1 USB 2.0 Host,x1 Ple Root Complex·5-port 10/100 FE PHY

    標簽: mt7628

    上傳時間: 2022-07-25

    上傳用戶:

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