Linux: AM355x ADC voltage calculation Tool/software:Linux Hi, I am using AM355x for my project. I Need to calculate the ADC voltage from raw value. $cat /sys/bus/iio/devices/iio:device0/in_voltage2_raw 3360 How can i covert this raw value into voltage ? Currently I m us...
VDD, use the following simple formula to obtain the hex-code value corresponding to an identified input-analog-voltage level: VIN/(VDD/255)=result value="hex" code (see Editor's note). Note that you must round off the result value to a whole number before...
Thank You all, seems that it was problem in layout, I always start from myself so I thought I was doing something wrong but, there was extra Zener diode which was creating that voltage drop which was ...
我按照ADC校准流程,对ADC进行校准后,断电从新上电,发现ADC不准,整个系统电压工作在3.3V。 现象: 1)输入电压低于1V的,转换结果都是0;输入电压在3.3V,转换结果在2160左右; 2)即使换另一个通道,甚至换了另一组ADC,1)中的现象依然存在。 该现象你们是否遇到过?是否有解决方式? Solved! Go to Solutio...
On this condition, the ADC input range will be 0 to 3.84V in calculation, but I'll use it up to 3.3V input.I think the ADC resolution is worse than when used VREFH = 1.54V. Is there any other expected side effect? 3. When I create 1.54V of VREFH, is it no problem to be ...
A semiconductor integrated circuit includes a bus, a CPU connected to the bus, a DAC having a digital input thereof connected to the bus, an ADC having a digital output thereof connected to the bus, a voltage generating circuit, a first switch configured to cause an electrical coupling ...
From my calculation the amount of DMA which can be addresses by the ADC is: 32 (channels) * 8 (words per channel) * 2 (bytes per word) = 512 bytes So the starting address for the DMA buffers should be aligned to a multiple of 512 (even if you never use higher channels) ...
If you feel a post has answered your question, please click "Accept as Solution". 0Kudos In response to To be sure about the time calculation, i put a toggle pin code in half and complete callback functions. Then I snif the pin and the result is very accurate. 0...
经典：ADC与DAC-动态性能测试 ADC与DAC 衡量指标：•静态指标：DNL,INL;•动态指标：SNR,SINAD,THD,ENOB,IMD,etc.1 动态指标（1）•静态指标反映的特点有限，主要是慢速变化特性，也称之为DC传输特性，对于高速D/A,A/D来说，更需要AC传输特性来表征，反映不同频率信号的响应。•主要反映了D/A,A/D...
The SNR of the FFT calculation is a combination of several noise sources, The total harmonic distortion (THD) quantifies the which may include the ADC quantization error and the amount of distortion in the system. THD is the ratio of the ADC internal noise. Externally, the voltage reference...