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LPC2119 Demo - stdio with newlib and analog to digital conversion
標(biāo)簽： conversion digital newlib analog
上傳時(shí)間： 2013-12-23
上傳用戶：咔樂(lè)塢
vlsi custom microelectronics digital analog and mixed signal
標(biāo)簽： microelectronics digital custom analog
上傳時(shí)間： 2017-04-22
上傳用戶：cmc_68289287
analog to digital conversion applications of microcontroller
標(biāo)簽： microcontroller applications conversion digital
上傳時(shí)間： 2014-11-24
上傳用戶：鳳臨西北
Description of TLC1549C, TLC1549I, TLC1549M 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL
標(biāo)簽： 1549 TLC ANALOG-TO-DIGITAL Description
上傳時(shí)間： 2017-08-04
上傳用戶：sardinescn
Implementing quadrature modulation and demodulation of analog signals in digital signal processing, using MATLAB
標(biāo)簽： Implementing demodulation quadrature modulation
上傳時(shí)間： 2013-12-20
上傳用戶：gmh1314
Analog and digital electronic ebook . Good example for mixed signal .
標(biāo)簽： electronic digital example Analog
上傳時(shí)間： 2014-01-08
上傳用戶：fandeshun
Digital Up Converter (DUC) v1.4 Converter,Digital,DUC,Up,v1
標(biāo)簽： Converter Digital DUC Up v1
上傳時(shí)間： 2018-05-08
上傳用戶：gnifengyu
Abstract: This tutorial discusses methods for digitally adjusting the output voltage of a DC-DC converter. The digital adjustmentmethods are with a digital-to-analog converter (DAC), a trim pot (digital potentiometer), and PWM output of a microprocessor.Each method is assessed and several DACs and digital potentiometers presented.
標(biāo)簽： DCDC 數(shù)控 便攜產(chǎn)品 中的應(yīng)用
上傳時(shí)間： 2013-11-20
上傳用戶：zycidjl
Differential Nonlinearity: Ideally, any two adjacent digitalcodes correspond to output analog voltages that are exactlyone LSB apart. Differential non-linearity is a measure of theworst case deviation from the ideal 1 LSB step. For example,a DAC with a 1.5 LSB output change for a 1 LSB digital codechange exhibits 1⁄2 LSB differential non-linearity. Differentialnon-linearity may be expressed in fractional bits or as a percentageof full scale. A differential non-linearity greater than1 LSB will lead to a non-monotonic transfer function in aDAC.Gain Error (Full Scale Error): The difference between theoutput voltage (or current) with full scale input code and theideal voltage (or current) that should exist with a full scale inputcode.Gain Temperature Coefficient (Full Scale TemperatureCoefficient): Change in gain error divided by change in temperature.Usually expressed in parts per million per degreeCelsius (ppm/°C).Integral Nonlinearity (Linearity Error): Worst case deviationfrom the line between the endpoints (zero and full scale).Can be expressed as a percentage of full scale or in fractionof an LSB.LSB (Lease-Significant Bit): In a binary coded system thisis the bit that carries the smallest value or weight. Its value isthe full scale voltage (or current) divided by 2n, where n is theresolution of the converter.Monotonicity: A monotonic function has a slope whose signdoes not change. A monotonic DAC has an output thatchanges in the same direction (or remains constant) for eachincrease in the input code. the converse is true for decreasing codes.
標(biāo)簽： Converters Defini DAC
上傳時(shí)間： 2013-10-30
上傳用戶：stvnash
設(shè)計(jì)了一種基于PIC16C71單片機(jī)的數(shù)字水溫配制閥。該配制閥采用NTC熱敏電阻作溫度傳感器，與固定電阻組成簡(jiǎn)單分壓電路作為水溫測(cè)量電路，利用PIC16C71單片機(jī)內(nèi)置的8位A/D轉(zhuǎn)換器把熱敏電阻上的模擬電壓轉(zhuǎn)換為數(shù)字量，PIC16C71單片機(jī)控制直流電機(jī)驅(qū)動(dòng)混水閥調(diào)節(jié)冷熱水的混合比例實(shí)現(xiàn)水溫調(diào)節(jié)。給出了控制電路圖，對(duì)水溫測(cè)量電路的參數(shù)選擇和測(cè)溫精度作了詳細(xì)討論。實(shí)驗(yàn)和分析表明，選用阻值較大的NTC熱敏電阻和分壓電阻可較好地解決熱敏電阻因功耗較大造成的熱擊穿問(wèn)題。 Abstract: A digital valve for controlling water temperature based on PIC16C71 was presented in this paper.A bleeder circuit which consisted of a NTC thermistor as temperature sensor and a fixed resistance was designed as water temperature measuring circuit.The analog voltage on the thermistor was converted into digital signal by a 8-bit A/D converter embedded in PIC16C71. Based on the digital signal， the MCU PIC16C71 drived the valve by a DC motor to adjust the water temperature through adjusting the proportion of hot water and cold water.The circuit diagram of controller was given，the principle，the component parameters and the accuracy of measuring temperatures were also dissertated in detail. It was found by experiment and analysis that thermal breakdown of thermistor caused by high power could be solved by selecting thermistor and fixed resistance with high impedance value.
上傳時(shí)間： 2013-11-08
上傳用戶：Yue Zhong
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