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Hi,
EN is used in the data interface ... as shown in the timing diagram
DISP is used enable/disable (energy saving) the display .. as the text says
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I´m sure there are more detailed datasheets/documents.
Klaus
Hi,
Dana, I´ve seen you several times to recommend these SOCs.
I´ve zero experience with them. (indeed I´m a bit curious)
Can you give a short information how they compare in analog performance (OPAMPs) as well as ADC performance (noise / ENOB, drift...)
Best when you could compare to the...
Hi,
just to clarify: with AC excitation you are able to measure frequencies down to DC. This is not the same as AC coupling i.e. HighPassFiltering.
DAC as offset correction will work, also a digital pot. The digital pots may be "non volatile" thus may be factory calibrated. No need for...
Hi,
I still think the sensor internal offset generates a high sensor AC (modulation) signal, in a way that the true signal of interest is much smaller.
But for sure the modulated exctitation will remove side effects, like thermocouple offset.
So I see a benefit in AC excitation ... but still...
with 3.75V output at U1A ... due to the 1k/1.5k resistive divider .... I expect 2.25V at the ADC input .. which should be fine.
But everthing has it´s limits .... thus my task for the OP to write the table ....
So we - and in best case the OP - can find out if there is a cricuit problem, a...
Hi,
You need to differentiate beween "capacitors for the voltage regulators" and "capacitors for the ADC"
The benefit of using a MUX would be that you can use Dana`s approach of post#10.
But you can not do this with this ADC. Here we have a delta sigma ADC that needs continous operation and...
Hi,
I recommend to use a simulation tool.
****
Please craete a table where we can clearly see the problem:
R_t | expected_U1A_out | measured_U1A_out | expected V_ISO_POS | measured V_ISO_POS | expected_ADC_value | measured ADC_Value
The table should include "good" values as well as "bad"...
Very true.
What I wonder is: .. If I personally have an idea about modifying a circuit .... it´s my idea. So it´s me, who should have a reason for this modification. I do this because I want to achieve a goal. And I should have a description or in best case a value for this goal.
But I...
in another phase shifter?
Isn´t it like:
I want to bake a chocolate cake.
But in another cake receipe they used pineapple.
Why should I care about the other cake receipe?
Or did I misunderstand something?
Klaus
Hi,
you may find documents showing equivalent types.
Often there are no 100% equivalent types.
So from these documents, I may get an idea, but in either case I cross check the according datsheets .. especially for the values that are important for my application.
Example:
Let´s say they give...
Hi,
you have 604,800 seconds in one week. or 0.6 million.
if you now have 15 seconds per week this will equal to 15/0.6 = 25 (ppm)
(Indeed I expected you to do this simple math .. and compare the value with the XTAL datasheet)
We don`t have the datasheet to compare with. .. Regarding initial...
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