介紹了廣泛應用于各種電流模式電路的第二代電流控制電流傳輸器原件的跨導線性環特性和端口特性,以及其基本組成共源共柵電流鏡,并提出了基于共源共柵電流鏡的新型COMS電流傳輸器。在此基礎上,設計了基于電流控制電流傳輸器的電流模式積分電路,并利用Hspice軟件進行輸入為正弦波和方波時的輸出波形的仿真驗證。
上傳時間: 2013-10-22
上傳用戶:wtrl
Abstract: Mechanical misalignment and scaling factors lead to a mismatch between the values coming from a touchscreen panel (as translated by a touch screen controller) and the display (typically an LCD) on which the touch screenpanel is mounted. This tutorial discusses how to calibrate the touch screen panel to match the display.
上傳時間: 2013-10-21
上傳用戶:euroford
With more and more multi-frequency clocks being used in today's chips, especially in the communications field, it is often necessary to switch the source of a clock line while the chip is running.
上傳時間: 2013-10-10
上傳用戶:1214209695
Abstract: A perfect voltage reference produces a stable voltage independent of any external factors. Real-world voltagereferences, of course, are subject to errors caused by many external factors. One causeof these major errors istemperature. Without care, it is easy to operate a voltage reference outside its operating temperature range. Thisapplication note describes how references respond to temperature changes, and how self-heating can cause a voltagereference to operate outside its recommended temperature range. Once understood, this knowledge can then be used toavoid making this design error.
上傳時間: 2013-11-08
上傳用戶:xianglee
Abstract: Specifications such as noise, effective number of bits (ENOB), effective resolution, and noise-free resolution inlarge part define how accurate an ADC really is. Consequently, understanding the performance metrics related to noise isone of the most difficult aspects of transitioning from a SAR to a delta-sigma ADC. With the current demand for higherresolution, designers must develop a better understanding of ADC noise, ENOB, effective resolution, and signal-to-noiseratio (SNR). This application note helps that understanding.
上傳時間: 2013-10-16
上傳用戶:x18010875091
Abstract: The MAX9930–MAX9933 family of RF controllers and detector can be used in a wide variety of applications. Anideal application is cable television (CATV) over fiber, where either a RF controller or a RF detector controls the gain of atransimpedance amplifier (TIA). This application note shows how the MAX9930 (RF controller) can be used as either theRF controller or detector.
上傳時間: 2013-10-11
上傳用戶:Pzj
如果明智地選擇時鐘,一份簡單的抖動規范幾乎是不夠的。而重要的是,你要知道時鐘噪聲的帶寬和頻譜形狀,才能在采樣過程中適當地將它們考慮進去。很多系統設計師對數據轉換器時鐘的相位噪聲和抖動要求規定得不夠高,幾皮秒的時鐘抖動很快就轉換成信號路徑上的數分貝損耗。
上傳時間: 2014-12-23
上傳用戶:dreamboy36
時鐘抖動時域分析(下):
上傳時間: 2013-11-18
上傳用戶:rocketrevenge
所有MEMS麥克風都具有全向拾音響應,也就是能夠均等地響應來自四面八方的聲音。多個麥克風可以配置成陣列,形成定向響應或波束場型。經過設計,波束成形麥克風陣列可以對來自一個或多個特定方向的聲音更敏感。麥克風波束成形是一個豐富而復雜的課題。本應用筆記僅討論基本概念和陣列配置,包括寬邊求和陣列和差分端射陣列,內容涵蓋設計考慮、空間和頻率響應以及差分陣列配置的優缺點。
上傳時間: 2013-10-17
上傳用戶:chenlong
Abstract: This application note presents an overview of the operational characteristics of accurate I²C real-time clocks (RTCs),including the DS3231, DS3231M, and DS3232. It focuses on general application guidelines that facilitate use of device resources forpower management, I²C communication circuit configurations, and I²C characteristics relative to device power-up sequences andinitializations. Additional discussions on decoupling are provided to support developing strategies for mitigating power-supply pushingof device frequency.
上傳時間: 2013-11-23
上傳用戶:WMC_geophy