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
行为级仿真是提高流水线(Pipeline)Adc设计效率的重要手段。建立精确的行为级模型是进行行为级仿真的关键。本文采用基于电路宏模型技术的运算放大器模型,构建了流水线Adc的行为级模型并进行仿真。为验证提出模型的精度,以一个7位流水线Adc为例,分别进行了电路级与行为级的仿真,并做了对比。结果表明这样构建的行为级模型能较好地反映实际电路的特性,同时仿真时间大大缩短。
上传时间: 2013-10-18
上传用户:zsjinju
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
越柬越多的应用 例如过程控制、称重等 都需要高分辨率、高集成度和低价格的Adc。 新型Σ .△转换技术恰好可以满足这些要求 然而, 很多设计者对于这种转换技术并不 分了解, 因而更愿意选用传统的逐次比较Adc Σ.A转换器中的模拟部分非常简单(类似j 个Ibit Adc), 而数字部分要复杂得多, 按照功能町划分为数字滤波和抽取单元 由于更接近r 个数字器件,Σ △Adc的制造成本非常低廉.
标签: Adc
上传时间: 2013-10-24
上传用户:han_zh
将模拟信号转换为数字信号后再进行处理,是当前信号处理普遍使用的方法,模数转换器(Adc)就是将模拟信号转换为数字信号的器件,所以计算其有效转换位数对系统性能评估就显得尤为重要。文中结合项目工程实践,讨论了Adc有效转换位数的两种测试方法:噪声测试法和信噪比测试法,并对两种方法进行了仿真与分析。
上传时间: 2013-12-17
上传用户:1184599859
交调失真(IMD)是用于衡量放大器、增益模块、混频器和其他射频元件线性度的一项常用指标。二阶和三阶交调截点(IP2和IP3)是这些规格参数的品质因素,以其为基础可以计算不同信号幅度下的失真积。虽然射频工程师们非常熟悉这些规格参数,但当将其用于Adc时往往会产生一些困惑。本教程首先在Adc的框架下对交调失真进行定义,然后指出将IP2和IP3的定义应用于Adc时必须采取的一些预防措施。
上传时间: 2014-01-07
上传用户:归海惜雪
High input impedance and a wide input range are twohighly desirable features in a precision analog-to-digitalconverter, and the LTC®2449 delta-sigma Adc has both.With just a few external components, the LTC2449 formsan exceptional measurement system with very high inputimpedance and an input range that extends 300mV beyondthe supply rails.
上传时间: 2013-11-02
上传用户:ywcftc277
The 14-bit LTC2351-14 is a 1.5Msps, low power SARAdc with six simultaneously sampled differential inputchannels. It operates from a single 3V supply and featuressix independent sample-and-hold amplifi ers and a singleAdc. The single Adc with multiple S/HAs enables excellentrange match (1mV) between channels and channel-tochannelskew (200ps).
上传时间: 2014-12-23
上传用户:天诚24
Many 8-bit and 16-bit microcontrollers feature 10-bitinternal Adcs. A few include 12-bit Adcs, but these oftenhave poor or nonexistent AC specifi cations, and certainlylack the performance to meet the needs of an increasingnumber of applications. The LTC®2366 and its slowerspeed versions offer a high performance alternative, asshown in the AC specifi cations in Table 1. Compare theseguaranteed specifi cations with the Adc built into yourcurrent microcontroller.
上传时间: 2013-10-26
上传用户:jackandlee
The STM32F10xxx microcontroller family embeds up to three advanced 12-bit Adcs (depending on the device) with a conversion time down to 1 μs. A self-calibration feature is provided to enhance Adc accuracy versus environmental condition changes.
上传时间: 2014-12-23
上传用户:eastimage