精密转换器专区

该专区内容有关精密转换器专区的讨论和常见问题解答。发帖前请阅读 Analog Devices EngineerZone 行为准则。

by ccovoid
精密转换器专区

Latest 29 days ago by asking
102 2 1
Not Answered
AD5522 0
Not Answered

我在用AD5522生成正弦波的时候，能产生正常的正弦波信号，但是在读取端，引脚MEASOUTX读取不到任何数据，示波器观察发现该引脚基本是一条直线。这时什么情况啊？如果我用AD5522产生一个方波信号的话，都能正常工作，是AD5522不支持正弦波信号吗？

ad5522 Device Power Supply (DPS) & Parametric Measurement Units (PMU) ATE Specialty Amplifiers

102 2 1
by adstest
精密转换器专区

Latest 1 month ago by adstest
202 5 0
Not Answered
求助AD5781在Config为0x12时设置DAC寄存器511以下会复位 0
Not Answered

AD5781使用FPGA控制，实际测试了很多数据，SPI的读写没问题。硬件上，正参考输入 5V，负参考输入0V。电路图参考datasheet中的电路，仅将VREFNF对应运放的同相输入端接地。测试过程如下： config寄存器配置为0x12，读回为0x12 1.设置 DAC寄存器512 ~ 最大值的DA值，拉低ladcn再释放后，输出正常变化，读回数据匹配正常 2.设置 DAC寄存器 0~ 511 ,拉低ladcn再释放后，读回DAC寄存器值，为0， config寄存器复位成0x06...

202 5 0
by fujiannormaluniversity
精密转换器专区

Latest 1 month ago by mashimaro
129 1 0
Not Answered
LTC2672不同通道的输入寄存器AB的使用 0
Not Answered

工程师您好！我想请问下LTC2672不同通道的输入寄存器AB能否使用不同方式选择？例如通道0不使用输入寄存器切换功能，或者使用SPI命令来控制输入寄存器的选择，而通道1使用TGP引脚来控制使用输入寄存器选择。感谢答复！

Datasheet/Specs ltc2672 Current Source-Sink D/A Converters Precision D/A Converters

129 1 0
by photoop
精密转换器专区

Latest 1 month ago by mashimaro
224 1 0
Not Answered
AD7928BRUZ AD采样批量出现异常低值 0
Not Answered

AD7928BRUZ模拟信号采样，模拟信号电压范围0-2.5v，只用通道0采集数据，用来采集一个64个像素的点阵，一秒钟采集125次，采样率8000次/秒。采集的异常原始数据如下，即值小于3000均有可能为异常采集值：示波器观测的波形，不应该采集到那么低的值，示波器波形如下所示：图2：时序细节图3 64个像素的点阵模拟信号和AD7928BRUZ的片选信号的时序模拟信号的峰值均在片选信号的峰值，意味AD7928BRUZ均在模拟信号达到峰值时采集。我观测了半个小时的数据...

Precision A/D Converters

224 1 0
by Lipyu
精密转换器专区

Latest 1 month ago by mashimaro
215 1 1
Answered
AD7606传递函数疑问ࡧ +1
Answered

Datasheet中描述, AD7606 ADC传递函数为 ±10V CODE =(Vin/10V) × 32,768 × REF/2.5V, 但是, Datasheet中又说, AD7606内置一个基准电压缓冲, 缓冲配置为将REF电压放大至约4.5V. 我的应用中,配置为使用内部2.5V基准电压. 那么,我这里计算ADC采样结果时, REF值是要代入4.5V还是代入2.5V计算呢? 回复请@给 ynie509@QQ.com 谢谢!

ad7606 hardware Simultaneous Sampling A/D Converters Precision A/D Converters

215 1 1
by Frankieshang
精密转换器专区

Latest 1 month ago by Frankieshang
106 0 1
Answered
AD6676 Evaluation software 0
Answered

HI, I can't download AD6676 evaluation software by below link: ftp://ftp:analog.com/pub/HSC_ADC_Apps/AD6676_Demo_Package/ There's no any download option and no reponse clicked the files. Is this link current or false? Can someone offer current...

software ad6676 AD6676 Evaluation software High Speed A/D Converters >10 MSPS IF/RF Receivers Show More

106 0 1
by JimHuang
精密转换器专区

Latest 1 month ago by JimHuang
142 2 0
Answered
AD7689调试问题请教 0
Answered

我们用这个 ADC 的时候，发现 CNV 拉高阶段，对应通道的输入口会被拉低，就第一个图里面的绿色波形。导致采集值低于实际值。模拟量信号给到 ADC 输入通道之前加了一级电压跟随器，理论上输出阻抗应该很小的。

ad7689bcpz

142 2 0
by qqazsdfg
精密转换器专区

Latest 1 month ago by FrankZhang
123 1 0
Answered
使用nxp的rt1176单片机的spi外设读取 AD7768的数据dout时，读不出数据，请指导一下 0
Answered

我的读取流程如下： 1 首先在板子整体初始化阶段，完成spi外设的初始化，代码如下所示，一次传输32bit，cs信号低有效，从机模式设置为 mode1 将drdy连接到spi的cs引脚，同时也连接到另外一个gpio上，使能这个gpio的中断 lpspi_3_slave_cfg.bitsPerFrame = 32; lpspi_3_slave_cfg.cpol = kLPSPI_ClockPolarityActiveHigh; //lpspi_3_slave_cfg.cpol = kLPSPI_ClockPolarityActiveLow;...

adc adc芯片 Simultaneous Sampling A/D Converters ad7768 Precision A/D Converters Show More

123 1 0
by yanghan
精密转换器专区

Latest 1 month ago by qqazsdfg
591 2 0
Not Answered
关于AD7768与STM32F407进行数据通信 0
Not Answered

我再做一个任务，需要使用STM32F407对AD7768的数据进行读取，当然我们的AD采集速率要求不高，只需要2K。我使用GPIO来模拟SPI对AD7768的寄存器进行配置读取，使用硬件SPI1来进行数据通信，我们采用所有数据都在DOUT0上输出的模式。然后使用DRDY信息来进行数据中断触发。下图为中断回调函数，在中断中读取所有数据。但是目前存在问题：SPI1读取到的数据不完整，整体数据在字节上出现偏移

software Simultaneous Sampling A/D Converters ad7768 Precision A/D Converters

591 2 0
by Hangsay
精密转换器专区

Latest 2 months ago by Hangsay
150 2 0
Answered
项目（电容传感器）-深圳 0
Answered

产品要加一个触控的模块，计划用电容传感器做开发。有类似产品的可以探讨下具体性能指标

150 2 0

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AD5522 0
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求助AD5781在Config为0x12时设置DAC寄存器511以下会复位 0
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LTC2672不同通道的输入寄存器AB的使用 0
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AD7928BRUZ AD采样批量出现异常低值 0
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AD7606传递函数疑问ࡧ +1
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Answered
AD6676 Evaluation software 0
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Answered
AD7689调试问题请教 0
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Answered
使用nxp的rt1176单片机的spi外设读取 AD7768的数据dout时，读不出数据，请指导一下 0
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关于AD7768与STM32F407进行数据通信 0
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项目（电容传感器）-深圳 0
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AD6676 Evaluation software 0
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使用nxp的rt1176单片机的spi外设读取 AD7768的数据dout时，读不出数据，请指导一下 0
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AD7689调试问题请教 0
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AD7124测量毫伏级别电压漂移问题 0
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The differences between AD4190-4 and AD4195-4 0
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ADC芯片电源供电要求（AD7689） +1
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AD7604-4串行SPI读值为0，4个通道一次读取，64个clk脉冲时firstdata输出16个脉冲 +1
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AD421在有仿真器的条件下同样的程序输出电流正常，移除仿真器设备供电，设置电流永远大于20毫安 +1
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AD9122输出方波 0
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精密转换器专区

Not Answered AD5522 0 Not Answered

Not Answered 求助AD5781在Config为0x12时设置DAC寄存器511以下会复位 0 Not Answered

Not Answered LTC2672不同通道的输入寄存器AB的使用 0 Not Answered

Not Answered AD7928BRUZ AD采样批量出现异常低值 0 Not Answered

Answered AD7606传递函数疑问ࡧ +1 Answered

Answered AD6676 Evaluation software 0 Answered

Answered AD7689调试问题请教 0 Answered

Answered 使用nxp的rt1176单片机的spi外设 读取 AD7768的数据dout时，读不出数据，请指导一下 0 Answered

Not Answered 关于AD7768与STM32F407进行数据通信 0 Not Answered

Answered 项目（电容传感器）-深圳 0 Answered

Answered AD6676 Evaluation software 0 Answered

Answered 使用nxp的rt1176单片机的spi外设 读取 AD7768的数据dout时，读不出数据，请指导一下 0 Answered

Answered AD7689调试问题请教 0 Answered

Answered 项目（电容传感器）-深圳 0 Answered

Answered AD7124测量毫伏级别电压漂移问题 0 Answered

Answered The differences between AD4190-4 and AD4195-4 0 Answered

Answered ADC芯片电源供电要求（AD7689） +1 Answered

Answered AD7604-4串行SPI读值为0，4个通道一次读取，64个clk脉冲时firstdata输出16个脉冲 +1 Answered

Answered AD421在有仿真器的条件下同样的程序输出电流正常，移除仿真器设备供电，设置电流永远大于20毫安 +1 Answered

Answered AD9122输出方波 0 Answered

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AD5522 0
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Not Answered
求助AD5781在Config为0x12时设置DAC寄存器511以下会复位 0
Not Answered

Not Answered
LTC2672不同通道的输入寄存器AB的使用 0
Not Answered

Not Answered
AD7928BRUZ AD采样批量出现异常低值 0
Not Answered

Answered
AD7606传递函数疑问ࡧ +1
Answered

Answered
AD6676 Evaluation software 0
Answered

Answered
AD7689调试问题请教 0
Answered

Answered
使用nxp的rt1176单片机的spi外设读取 AD7768的数据dout时，读不出数据，请指导一下 0
Answered

Not Answered
关于AD7768与STM32F407进行数据通信 0
Not Answered

Answered
项目（电容传感器）-深圳 0
Answered

Answered
AD6676 Evaluation software 0
Answered

Answered
使用nxp的rt1176单片机的spi外设读取 AD7768的数据dout时，读不出数据，请指导一下 0
Answered

Answered
AD7689调试问题请教 0
Answered

Answered
项目（电容传感器）-深圳 0
Answered

Answered
AD7124测量毫伏级别电压漂移问题 0
Answered

Answered
The differences between AD4190-4 and AD4195-4 0
Answered

Answered
ADC芯片电源供电要求（AD7689） +1
Answered

Answered
AD7604-4串行SPI读值为0，4个通道一次读取，64个clk脉冲时firstdata输出16个脉冲 +1
Answered

Answered
AD421在有仿真器的条件下同样的程序输出电流正常，移除仿真器设备供电，设置电流永远大于20毫安 +1
Answered

Answered
AD9122输出方波 0
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