Abstract: Transimpedance amplifiers (TIAs) are widely used to translate the current output of sensors like photodiode-to-voltagesignals, since several circuits and instruments can only accept voltage input. An operational amplifier with a feedback resistor fromoutput to the inverting input is the most straightforward implementation of such a TIA. However, even this Simple TIA circuit requirescareful trade-offs among noise gain, offset voltage, bandwidth, and stability. Clearly stability in a TIA is essential for good, reliableperformance. This application note explains the empirical calculations for assessing stability and then shows how to fine-tune theselection of the feedback phase-compensation capacitor.
標簽: Transimpedance Stabilize Amplifier Your
上傳時間: 2013-11-13
上傳用戶:daoyue
Who has never experienced oscillations issues when using an operational amplifier? Opampsare often used in a Simple voltage follower configuration. However, this is not the bestconfiguration in terms of capacitive loading and potential risk of oscillations.Capacitive loads have a big impact on the stability of operational amplifier-basedapplications. Several compensation methods exist to stabilize a standard op-amp. Thisapplication note describes the most common ones, which can be used in most cases.The general theory of each compensation method is explained, and based on this, specific
上傳時間: 2013-10-28
上傳用戶:chenbhdt
Highlights the LTC1062 as a lowpass filter in a phase lock loop. Describes how the loop's bandwidth can be increased and the VCO output jitter reduced when the LTC1062 is the loop filter. Compares it with a passive RC loop filter. Also discussed is the use of LTC1062 as Simple bandpass and bandstop filter.
上傳時間: 2013-10-24
上傳用戶:chens000
Arduino 是一塊基于開放原始代碼的Simple i/o 平臺,并且具有使用類似java,C 語言的開發環境。讓您可以快速 使用Arduino 語言與Flash 或Processing…等軟件,作出互動作品。Arduino 可以使用開發完成的電子元件例如Switch 或Sensors 或其他控制器、LED、步進電機或其他輸出裝置。Arduino 也可以獨立運作成為一個可以跟軟件溝通的平臺,例如說:flash processing Max/MSP VVVV 或其他互動軟件… Arduino 開發IDE界面基于開放原始碼原則,可以讓您免費下載使用開發出更多令人驚奇的互動作品。 什么是Roboduino? DFRduino 與Arduino 完全兼容,只是在原來的基礎上作了些改進。Arduino 的IO 使用的孔座,做互動作品需要面包板和針線搭配才能進行,而DFRduino 的IO 使用針座,使用我們的杜邦線就可以直接把各種傳感器連接到DFRduino 上。 特色描述 1. 開放原始碼的電路圖設計,程式開發界面免費下載,也可依需求自己修改!! 2. DFRduino 可使用ISP 下載線,自我將新的IC 程序燒入「bootloader」; 3. 可依據官方電路圖,簡化DFRduino 模組,完成獨立云作的微處理控制器; 4. 可簡單地與傳感器、各式各樣的電子元件連接(如:紅外線,超聲波,熱敏電阻,光敏電阻,伺服電機等); 5. 支援多樣的互動程式 如: Flash,Max/Msp,VVVV,PD,C,Processing 等; 6. 使用低價格的微處理控制器(ATMEGA168V-10PI); 7. USB 接口,不需外接電源,另外有提供9VDC 輸入接口; 8. 應用方面,利用DFRduino,突破以往只能使用滑鼠,鍵盤,CCD 等輸入的裝置的互動內容,可以更簡單地達成單人或多人游戲互動。 性能描述 1. Digital I/O 數字輸入/輸出端共 0~13。 2. Analog I/O 模擬輸入/輸出端共 0~5。 3. 支持USB 接口協議及供電(不需外接電源)。 4. 支持ISP 下載功能。 5. 支持單片機TX/RX 端子。 6. 支持USB TX/RX 端子。 7. 支持AREF 端子。 8. 支持六組PWM 端子(Pin11,Pin10,Pin9,Pin6,Pin5,Pin3)。 9. 輸入電壓:接上USB 時無須外部供電或外部5V~9V DC 輸入。 10.輸出電壓:5V DC 輸出和3.3V DC 輸出 和外部電源輸入。 11.采用Atmel Atmega168V-10PI 單片機。 12.DFRduino 大小尺寸:寬70mm X 高54mm。 Arduino開發板圖片
上傳時間: 2014-01-14
上傳用戶:909000580
Arduino,是一塊基于開放源代碼的USB接口Simple i/o接口板(包括12通道數字GPIO,4通道PWM輸出,6-8通道10bit ADC輸入通道),并且具有使用類似Java,C語言的IDE集成開發環境。 讓您可以快速使用Arduino語言與Flash或Processing…等軟件,作出互動作品。 Arduino可以使用開發完成的電子元件例如Switch或sensors或其他控制器、LED、步進馬達或其他輸出裝置。Arduino也可以獨立運作成為一個可以跟軟件溝通的接口,例如說:flash、processing、Max/MSP、VVVV 或其他互動軟件…。Arduino開發IDE接口基于開放源代碼原,可以讓您免費下載使用開發出更多令人驚艷的互動作品。 特色: 1、開放源代碼的電路圖設計,程序開發接口免費下載,也可依需求自己修改。 2、使用低價格的微處理控制器(ATMEGA8或ATmega128)??梢圆捎肬SB接口供電,不需外接電源。也可以使用外部9VDC輸入 3、Arduino支持ISP在線燒,可以將新的“bootloader”固件燒入ATmega8或ATmega128芯片。有了bootloader之后,可以通過串口或者USB to Rs232線更新固件。 4、可依據官方提供的Eagle格式PCB和SCH電路圖,簡化Arduino模組,完成獨立運作的微處理控制??珊唵蔚嘏c傳感器,各式各樣的電子元件連接(EX:紅外線,超音波,熱敏電阻,光敏電阻,伺服馬達,…等) 5、支持多種互動程序,如:Flash、Max/Msp、VVVV、PD、C、Processing……等 6、應用方面,利用Arduino,突破以往只能使用鼠標,鍵盤,CCD等輸入的裝置的互動內容,可以更簡單地達成單人或多人游戲互動。
標簽: Arduino
上傳時間: 2013-11-24
上傳用戶:bvdragon
Abstract: Nonideal cable dispersive effects can affect system performance. This application note discusses the twomain loss effects related to cables (skin-effect and dielectric losses), and presents a Simple method of modeling thecable for use in standard SPICE simulators.
上傳時間: 2014-11-18
上傳用戶:wxnumen
人人都愛易電源——轉發有禮! 活動主題:人人都愛易電源——轉發有禮! 活動時間:10月11日—28日
上傳時間: 2013-11-19
上傳用戶:Aeray
Multiple-voltage electronics systems often requirecomplex supply voltage tracking or sequencing, whichif not met, can result in system faults or even permanentfailures in the fi eld. The design diffi culties in meetingthese requirements are often compounded in distributedpowerarchitectures where point-of-load (POL) DC/DCconverters or linear regulators are scattered across PCboard space, sometimes on different board planes. Theproblem is that power supply circuitry is often the lastcircuitry to be designed into the board, and it must beshoehorned into whatever little board real estate is left.Often, a Simple, drop-in, fl exible solution is needed tomeet these requirements.
上傳時間: 2013-10-08
上傳用戶:15071087253
Easy-to-use and compact point-of-load power suppliesare necessary in systems with widely distributed, highcurrent, low voltage loads. The LTC®3415 provides acompact, Simple and versatile solution. It includes a pairof integrated complementary power MOSFETs (32mΩtop and 25mΩ bottom) and requires no external senseresistor. A complete design requires an inductor andinput/output capacitors, and that’s it. The result is a fast,constant frequency, 7A current mode DC/DC switchingregulator.
上傳時間: 2013-10-18
上傳用戶:avensy
Many complex systems—such as telecom equipment,memory modules, optical systems, networking equipment,servers and base stations—use FPGAs and otherdigital ICs that require multiple voltage rails that muststart up and shut down in a specific order, otherwise theICs can be damaged. The LTC®2924 is a Simple andcompact solution to power supply sequencing in a 16-pinSSOP package (see Figures 1 and 2).
上傳時間: 2013-10-29
上傳用戶:tonyshao