電源/新能源
提供權威的電源和新能源設計及電源管理資訊，內容有醫療/工業電源、LED驅動、數字電源、電池技術、太陽能光伏等電源技術方案，包括電源測試/仿真/認證、便攜電源、電動車/新能源、AC-DC與DC-DC轉換、基準/監控/保護電路等專業領域。
DS1870采用外接電阻時的調節范圍/分辨率
摘要：DS1870用于射頻(RF)功率放大器偏置控制，如果不接外部電阻，采用5V基準，其偏置電壓范圍為3V至5V。本應用筆記旨在展示如何利用外接電阻達到適當的范圍和分辨率。可以利用...
利用DS4303為LDMOS RF功率放大器提供偏置
摘要：LDMOS RF功率放大器因其極高的性價比在GSM和CDMA基站市場占據了主導地位。使用LDMOS放大器時，保證高性能的一個關鍵因素是補償柵極偏置電壓，以在溫度變化時保持恒定的靜態...
2009-04-28 標簽：放大器 1046
數字可調電壓基準源-Digitally Adjustable
A digitally adjustable voltage reference is useful in many applications. For instance, it can be used to finely tune the reference voltage when absolute accuracy is required or to adjust the reference voltage to match the full-scale voltag...
在便攜式應用中數字調整的DC-DC轉換器輸出電壓
There are many portable applications that optimize circuit performance by adjusting the output voltage of a DC-DC converter. For instance, many microprocessors can operate at a low voltage to save power, and then operate at a high voltage ...
2009-04-28 標簽：轉換器 1667
利用數字電位器的調節降壓DC-DC轉換器設計-Using D
Abstract: This application note describes how to use a digital potentiometer to generate an adjustable voltage supply using a MAX1776 step-down DC-DC converter. A reference design using the DS3903 is shown that features the ability to prod...
2009-04-28 標簽： 2461
利用DS1841對數電阻優化雪崩光電二極管(APD)的偏置范
摘要：本文闡述了如何使用DS1841對數電位器調節APD偏置電路的輸出范圍。為了使調節過程更簡單，本文還提供了電子數據表。 APD偏置電路DS1841可受溫度控制的...
2009-04-28 標簽：電阻 857
Inexpensive Peak Detector Feat
Abstract: This circuit, which uses a digital potentiometer (pot) and a comparator, features droopless operation that is not normally associated with peak detectors that have traditionally used rectifiers and sample-and-holds (S/H). ...
數模轉換器應用-Force/Sense DAC Applic
Abstract: This article discusses application circuits for Maxim force/sense digital-to-analog converters (DACs). Applications include: selectable fixed-gain DAC, programmable gain DAC, photodiode bias control, amperometric sensor control, ...
2009-04-28 標簽：轉換器 1842
利用數字電位器實現按鍵保持控制
摘要：許多裝置需要一個用戶接口來調整溫度、背光強度和電源電壓等，這個用戶接口需要能夠避免按鍵調整中的誤操作。若在這些裝置中使用一個數字電位器，設計人員可以通過...
2009-04-28 標簽：電位器 847
半導體數字電位器：常見問題
Abstract: This application note answers frequently asked questions for Dallas Semiconductor digital potentiometers. How do I set up the DS1267 in stacked configuration?Connect the H0 terminal to the L1 terminal...
2009-04-28 標簽： 897
求戴維等效電路的EPOT基于偏置電阻網絡
Additional Information: EPOT Applications: Offset Adjustment in Op-Amp Circuits To model the network shown below in Figure 1 as the Thevenin equivalent shown below in Figure 2, find the Thevenin Voltage (Vth) and the Thevenin Resis...
2009-04-28 標簽：EPOT 1066
Creating Non-Linear Transfer F
Abstract: Linear digital potentiometers (pots) can be used in non-linear applications such as adjusting volume control in audio applications. This article discusses how to create a "pseudo-logarithmic" taper digital pot by simply adding a ...
2009-04-28 標簽：電位器 749
控制變壓電源使用DS1809-Controlling a V
Abstract: Semiconductor topic: Many linear and switched-mode power supplies and voltage regulators use a resistor network as feedback into the regulator to adjust the voltage output. This is typically done either by varying the values of t...
2009-04-28 標簽：電源 1232
2-Wire Controlled Digital DIP
Abstract: The DS3904 contains three digitally controlled nonvolatile (NV) variable resistors. It has the capability of placing each of the variable resistors into a high-impedance state. Using this feature, it is possible to create a 2-wir...
2009-04-28 標簽：Switch 1364
External Resistor Minimizes Di
Abstract: This article discusses how to improve linearity (due to loading of the wiper) and mid-range frequency response of a digital potentiometer in VCO control applications by adding a single external resistor between H and W. ...
2009-04-28 標簽：Resistor 1645
怎樣將數字電位器的帶寬從10倍提高到100倍
摘要：本文介紹了一種簡單電路，能夠將數字電位器的帶寬從10倍提高到100倍。利用這一方法，數字電位器可以用于視頻帶寬的高頻應用。 數字電位器(digital pot或digipot)...
2009-04-28 標簽： 1182
利用數字電位器實現電壓-電阻轉換
摘要：利用一對相同的數字電位器構建電壓-電阻轉換方案。 在工業控制和偏置調節電路中有時需要將電壓轉換成電阻，這一過程在具體實施時有一定的難度。圖1所示...
構建DS1803/DS1805數字電位器的按鍵控制器
摘要：本應用筆記介紹了一種通過幾個按鍵和一個微控制器控制數字電位器DS1803或DS1805阻值的簡易方法。 概述本應用筆記介紹了一種使用幾個按鍵和一個微控...
2009-04-28 標簽： 3528
區分數字電位器的性能
摘要：數字電位器(digipot)能夠在各種應用中為模擬電路提供便利的電阻、電壓和電流的數字控制與調節。該應用筆記介紹了數字電位器的基本功能，說明了如何改進數字電位器以提...
2009-04-28 標簽：電位器 985
DS1845/DS1855溫度系數分析-DS1845/DS1
Abstract: The temperature characteristics of digital potentiometers differ from those of traditional mechanical potentiometers. The effects of temperature on the absolute resistance of the potentiometer must be taken into consideration whe...
接口數控端口和電阻激光驅動器-Interfacing Dig
Abstract: This application brief describes the two topologies used to bias optical laser drivers (open loop and closed loop) and demonstrates examples using the DS1847 digital potentiometer and the MAX3273 laser driver. A laser module desi...
2009-04-28 標簽：驅動器 1258
如何解釋DS1854，DS1857和DS1858溫度和電壓讀
Abstract: The DS1854, DS1857, and DS1858 monitor VCC, ambient temperature, and external analog inputs. This application note explains how to interpret the values stored in the Main Device SRAM and translate them into temperature and voltag...
再生的DS1847/DS1848電阻校準常數-Regener
Abstract: The purpose of this application note is to show how the DS1847/48 digital resistor calibration constants can be regenerated. This application note assumes that the reader is familiar with the Programming the Lookup Table section ...
A Quick-Start Guide to DS1862
Abstract: This application note explains packet-error checking (PEC) as it applies to the DS1862 laser-control and digital-diagnostics IC. The DS1862 incorporates a CRC-8 byte and several other special bytes to improve the reliability of t...
2009-04-28 標簽：DS1862 1079
DS1863存儲器速查指南
摘要：DS1863突發模式PON控制器集成了監測電路，可用于配置報警、預警、查找表及其它功能。為了實現這些編程功能，需要一個大容量的映射寄存器，本應用筆記介紹了寄存器圖的...
2009-04-28 標簽：DS1863 532
DS1865速查指南
摘要：DS1865突發模式PON控制器內置監測電路，可用于配置報警、預警、查找表以及應用筆記4052 (DS1863存儲器速查指南)中的其他詳細功能。為實現這些編程功能，需要一個大容量的映...
2009-04-28 標簽：DS1865 982
DS3984/DS3988變壓器匝數比的選擇
摘要：DS3984和DS3988是多通道的冷陰極熒光燈(CCFL)控制器。使用DS3984和DS3988優化系統設計時，關鍵參數是變壓器匝數比的選擇。本應用筆記介紹了變壓器匝數比因不同的CCFL燈管和直流...
2009-04-28 標簽：變壓器 1180
DS3906電阻計算器
摘要：DS3906含有三個具有偽對數響應的可變電阻。當DS3906的內部電阻與外部電阻并聯使用時，可獲得小步長的線性響應。本應用筆記以及相關電子數據表用實例展示了通過并聯外部...
如何將DS1864的電流DAC轉換成電壓DAC
摘要：本文介紹了如何利用一個標準器件，將DS1864 SFP激光控制器/監測器中的電流DAC轉換成電壓輸出。 電流DACDS1864包含兩個8位吸電流DAC，可選擇1.5mA或0.5mA滿量...
2009-04-28 標簽：dac 2706
編輯推薦廠商產品技術軟件/工具OS/語言教程專題
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