Video/Images

The using of AD7124-4

hehe — Mon, 21 Mar 2022 05:46:50 GMT

Hi,

I want to use AD7124-4 to measure the RT100 ,and I have a question on using AD7124-4 as fig1 which was marked by the red and what's the stand for.

fig 1

Thanks a lot!

About the over-range error of ad7172-2

Xqy — Tue, 04 Jan 2022 01:54:12 GMT

Hello,

We have a circuit board designed based on AD7172-2 for wide-range measurement.

According to the data sheet of AD7172-2，the output result of the ADC should be 0xFFFFFF when an over-range error occurs.

But we can’t get this value in the test.

What could be the cause?

Thankyou!

Does the ad5522 support multiple channels to output different pulse signals at the same time?

yangfan2010 — Tue, 07 Dec 2021 10:08:14 GMT

I want the four channels of ad5522 to output different pulse signals at the same time. How do I make this function?

On the use of ad9694

jackc — Wed, 16 Jun 2021 02:17:21 GMT

In order to better use ad9694, a small demo board was made according to ad9694-500ebz. But the bottom noise of the board was about-98dbc (without analog clock and empty mining). In the same case, the bottom noise of ADI ad9694-500ebz board was about-115dbc. The power supply voltage is checked to be consistent with the voltage of ad9694-500ebz (the power noise is about 50mV). What is the reason why the bottom noise of the board ad9694 made by ourselves is so high?

找不到“从VDK迁移到μC/OS-III™︎”视频对应的讲解幻灯片和示例代码

chenxuezong509@126.com — Thu, 13 May 2021 03:10:31 GMT

在网站https://www.analog.com/cn/education/education-library/videos/2748975031001.html中点击视频下方的连接“从中文技术论坛下载讲解幻灯片和示例代码”找不到对应的下载地址。

AD8226 offset voltage

nidhi.shetty@iwavesystems.com — Tue, 25 Feb 2020 14:34:55 GMT

I've selected AD8226 in my design for self diagnosis of 0-20mA current loop.

I simulated AD8226 for sensing a constant current 1mA across 40E resistor. Below is the result for same.

Below are the parameters set. +Vs=30V , -Vs=-6V G=1 Sense resistor=40E current flowing=1mA Observing output voltage of 40.78933mV(Fig 1 and 2) but Vout=I*R = 1mA*40 = 40mV

Again I simulated AD8226 for sensing a constant current 20mA across 40E resistor. Below is the result for same.

Below are the parameters set. +Vs=30V , -Vs=-6V G=1 Sense resistor=40E current flowing=20mA Observing output voltage of 800.7578mV(Fig. 3 and 4) but Vout=I*R = 20mA*40 = 800mV

It is observed that nearly 0.7mV is additionally added to output, which is 700uV, But in the datasheet it is mentioned that 50uV is the input offset voltage. As gain is 1 output offset also should be 50uV.

Please let me know if I'm missing out anything.

Thanks and Regards

Nidhi P Shetty

the sample frequency is not same as the input signal.

niqilulu — Fri, 16 Aug 2019 02:57:30 GMT

hi,

recently ,we brought an AD9278-50EBZ Evaluation Board and an HSC-ADC-EVALCZ board, after we follow "AD9278_79_eEVB_User_Guide", there is some errors as following.

we power the two boards using original distribution 6V power adapter for each board, then we use an signal synthesizer to generate a 1MHz, Vpp = 6V sin wave input to CH_A, when we run the FFT routine，finally, the frequency of the signal with the highest energy on the graph is 0.7MHz； also we test the 5MHz sine wave input, the analytical results is 3.8MHz, the 10MHz sine wave input, analytical results show the most highest energy signal is around 7.6MHz.

we read the UG again and again , still cannot result the problem,so can you help us.

the sample frequency is not same as the input signal.

niqilulu — Fri, 16 Aug 2019 02:57:18 GMT

hi,

recently ,we brought an AD9278-50EBZ Evaluation Board and an HSC-ADC-EVALCZ board, after we follow "AD9278_79_eEVB_User_Guide", there is some errors as following.

we read the UG again and again , still cannot result the problem,so can you help us.

AD9849 H signal level

XHe324 — Tue, 25 Jun 2019 16:05:10 GMT

Dear ADI Technical Support Center:

Hello!

I used your company's AD9849 chip in the subject experiment and encountered related technical problems in the experiment.

My project uses your company's AD9849 CCD driver chip with Sony's ICX697FKW CCD image sensor. At present, a board PCB has been proofed to achieve the initial driving of the signal, but the H signal level standard is not met in use.

The H1 signal provided by the AD9849 chip is 0V/5V (DVDD1 is already available for 5V).

However, the H signal level standard required by the ICX697FKW chip is -3V/3V.

At present, the system can be used normally on other 0V/5V standard CCD systems, but this level requires different chips to work normally.

I want to find a solution from your company so that the level meets the requirements.

Best wishes!