Abstract: This design idea explains how to implement an 8-bit analog-to-digital CONVERTER (ADC), using a microcontroller
上传时间： 2013-10-30
上传用户：爱死爱死
Abstract: The DS4830 optical microcontroller's analog-to-digital CONVERTER (ADC) offset can change with temperature and gainselection. However, the DS4830 allows users to measure the ADC internal offset. The measured ADC offset is added to the ADCoffset register to nullify the offset error. This application note demonstrates the DS4830's ADC internal offset calibration in theapplication program.
上传时间： 2014-12-23
上传用户：萍水相逢
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.
上传时间： 2013-11-20
上传用户：zycidjl
The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC CONVERTER to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC CONVERTER (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an input supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and span a range wide enough to account for resistance, potentiometer and DCDCCONVERTER tolerances (27.6V to 36.7V).
上传时间： 2014-12-23
上传用户：781354052
This paper presents a space vector modulation(SVM)-based switching strategy for a three-level neutral point clamped (NPC) CONVERTER that is adapted as a STATCOM.
上传时间： 2013-10-20
上传用户：zyt
The LTC®1966 is a true RMS-to-DC CONVERTER that uses aDS computational technique to make it dramatically simplerto use, significantly more accurate, lower in powerconsumption and more flexible than conventional logantilogRMS-to-DC CONVERTERs. The LTC1966 RMS-to-DCCONVERTER has an input signal range from 5mVRMS to1.5VRMS (a 50dB dynamic range with a single 5V supplyrail) and a 3dB bandwidth of 800kHz with signal crestfactors up to four.
上传时间： 2013-10-12
上传用户：qilin
This application note describes a Linear Technology "Half-Flash" A/D CONVERTER, the LTC1099, being connected to a 256 element line scan photodiode array. This technology adapts itself to handheld (i.e., low power) bar code readers, as well as high resolution automated machine inspection applications..
上传时间： 2013-11-21
上传用户：lchjng
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.
标签： CONVERTERs Defini DAC
上传时间： 2013-10-30
上传用户：stvnash
1.2MHz 2A Synchronous Step-Down CONVERTER
上传时间： 2013-11-01
上传用户：qingzhuhu
返驰式(Flyback) 电源供应器是交换式电源设计供应器(Switch Power Supply，SPS)的一种，为工业界常用之电路架构，其特点如下表所示，图一所示为返驰式转换器(Flyback CONVERTER)电路。 一般设计SPS需要一些保护来提高系统设备之稳定安全，尤其是输出过电压保护极为重要，这个输出过电压保护目的是防止电气设备上的元件之绝缘遭受过电压的破坏。一般过电压的测试方法是将回授Open让系统呈现段回路状况，导致一次侧能量无限制提供给二次测来达到输出过电压现象。
上传时间： 2013-11-06
上传用户：haoxiyizhong
