ADC或DAC的精度不一定优于其基准电压源.基准电压源的温度漂移会影响满量程精度, 如图12所示.表中显示了系统分辨率和在100°C的工作温度范围内保持½ LSB的误差而必需的温 度系数.例如,为了使½ LSB误差维持于12位,温度系数必须为1 ppm/°C左右.对于较小的工 作温度范围,漂移要求也较小.表中最后三栏显示...
2. Walter G. Jung, Op Amp Applications, Analog Devices, 2002, ISBN 0-916550-26-5, Also available as Op Amp Applications Handbook, Elsevier/Newnes, 2005, ISBN 0-7506-7844-5. Chapter 1.
Collection of reprints from the popular Analog Dialogue series, entitled “Ask The Applications Engineer”, from its inception in 1988 through 1996. Which ADC Architecture Is Right for Your Application?, 2005 Covers the popular ADC architectures and how to choose the correct one based on the appli...
The ability to perform this conversion between phase noise and time jitter is especially useful when using the PLL output to drive an ADC sampling clock. Once the time jitter 43、is known, its effect on the overall ADC SNR can be evaluated. The ADIsimPLL program (to be discussed shortly ...
ADC 的NPR测量采用类似方式即可,只是模拟 接收器被一个缓冲存储器和一个FFT处理器(用于执行计算)取代了,如图1B所示。有些情 况下,先用ADC把组合FDM信号转换成数字信号,然后进行传输,再在接收器端用DAC 转换回模拟信号。此时,如图1A所示模拟方法被用来测试NPR 。 在1939年的一篇文章中(参考文献1),Holbrook和...
195 ADC 需要考虑的交调失真因素 97 旋变数字转换器 204 DC 架构VI :折叠型ADC 103 电压频率转换器 209 FPGA 与ADC 数字数据输出的接口 115 运行典型高速ADC 评估板设置 216 了解SINAD 、ENOB 、SNR 、THD 、THD + N 、SFDR , 量化噪声:公式SNR = 6.02 N + 1.76 dB 的扩展推导 224 不在噪底中迷失 ...
(例如ADC或DAC)内部,接地通常保持独立,以免将数字 信号耦合至模拟电路内.图5显示了一个简单的转换器模型.将芯片焊盘连接到封装引脚 难免产生线焊电感和电阻,IC设计人员对此是无能为力的,心中清楚即可.快速变化的 数字电流在B点产生电压,且必然会通过杂散电容CSTRAY耦合至模拟电路的A点.此外,IC 封装每个引脚间约...
50 Page 4 of 4 MT-013 指南评估高速DAC性能作者:Walt Kester 简介 ADC需要FFT处理器来评估频谱纯度,DAC则不同,利用传统的模拟频谱分析仪就能直接 研究它所产生的模拟输出。DAC评估的挑战在于要产生从单音正弦波到复杂宽带CDMA信 号的各种数字输入。数字正弦波可以利用直接数字频率合成技术来产生,但更复杂的数字 ...
In terms of the core converter technology, RME are using the latest 32-bit, 768kHz PCM/DSD converters from AKM’s premium ‘Verita’ chips: a single AK5574 ADC and two AK4490 DACs. In addition to standard PCM conversion, these converters also support DSD signals using the ‘DSD over PCM...
In the following, I will separate this review into three major parts. The ADI-2 Pro is three killer devices packed into one housing: ADC, DAC, and head-amp. But for us headphone geeks, the ADC part is probably not so important. My review of the ADI-2 Pro is aimed at valuating its...