
1. Re: ADC DeltaSigma range confusion
VasanthR_91 Jun 4, 2018 6:49 AM (in response to omji_289661)Hello Omar
The range can go upto 2.048( 2.044,Vdac max 1.020+1.024). Currently Vdac voltage is 1V. So the maximum value will be 2.024V. The description does not specify about that range. But it is a usable range. Input voltage range is 02.024V.
Best Regards,
VSRS 
2. Re: ADC DeltaSigma range confusion
omji_289661 Jun 4, 2018 8:20 AM (in response to VasanthR_91)Thanks Vsrs,
With these conditions, ADC with VREF=1.024 and ADC input=1.024 ADC SIGMADELTA will work like this:
With 0 at ADC+ conversion will be signed to 0.1024V
with 1.024 at ADC+ conversion will be signed to 0
And here is the confusion: if I enter at ADC+ = 2.048V , Can I expect signed result of +1.024V????? or is this out of range???
What happen if I enter 4V at ADC+ input? ADC conversion value will goes to hexadecimal value of 8000 with 16 bits of resolution?
Please help me I'm very confused. Thanks in advance.

3. Re: ADC DeltaSigma range confusion
omji_289661 Jun 4, 2018 9:24 AM (in response to VasanthR_91)Hi Again Vsrs,
So with differential mode and Vref=1.024V but with ADC input in 0 the range will be 0±1.024 so> 1.024 to 1.024 then:
with ADC+ input in 0 result conversion will be 0?
with ADC+ input in 1.024 result conversion will be 1.024?
Then how to get .1024 value conversion???? what condition produce this? a negative value????
Thanks.

4. Re: ADC DeltaSigma range confusion
EvPa_264126 Jun 4, 2018 1:50 PM (in response to omji_289661)2 of 2 people found this helpful 
5. Re: ADC DeltaSigma range confusion
omji_289661 Jun 4, 2018 4:52 PM (in response to EvPa_264126)Many thanks for your response, your schematic was very illustrative.
But what happen if Vref=1.024V with ADC input in 0 the range will be 0±1.024 so> 1.024 to 1.024 then:
with ADC+ input in 0 result conversion will be 0?
with ADC+ input in 1.024 result conversion will be 1.024?
Then how to get .1024 value conversion???? what condition produce this? a negative value????
Thanks.

6. Re: ADC DeltaSigma range confusion
EvPa_264126 Jun 5, 2018 12:50 AM (in response to omji_289661)It is better to touch once than see 100 times)))

Negative_Voltage.zip 471.8 K


7. Re: ADC DeltaSigma range confusion
omji_289661 Jun 5, 2018 8:20 AM (in response to EvPa_264126)Thanks Evgeniy, consider this question solved.

8. Re: ADC DeltaSigma range confusion
HaHE_2860291 Jun 15, 2018 5:57 AM (in response to EvPa_264126)Hey Evgeniy,
sorry my stupid question, but what is the "RunMean" component in your schematic.
Is this a filter or funktion?
can you PLEASE make a short explaination for me as super noob here...
thanks Harry
greetings from Vienna

9. Re: ADC DeltaSigma range confusion
EvPa_264126 Jun 15, 2018 12:20 PM (in response to HaHE_2860291)this Simple moving average.
double click on the component: set Range_of_Filter
Range_of_Filter determines the buffer size as a power of 2 (n = 2^Range_of_Filter)
function:
int32 RunMean_Get(int32 Sampl,int32 SIGNAL_SLOPE);
Sampl  new data
SIGNAL_SLOPE  filter reinitialization threshold ( SIGNAL_SLOPE==0  forced reinitialization )
p.s. I am pleased to remember Vienna  a very beautiful city.

RunMean.cycomp.zip 416.4 K


10. Re: ADC DeltaSigma range confusion
HaHE_2860291 Jun 15, 2018 1:53 PM (in response to EvPa_264126)thanks Evgeniy,
I ´m a little bit overcharged .... , but I will go through....
I meant, how you create the component "RunMean", with what kind of component or so...if I want to do so like you?
thanks Harry

11. Re: ADC DeltaSigma range confusion
EvPa_264126 Jun 15, 2018 2:23 PM (in response to HaHE_2860291)1 of 1 people found this helpfulyou are asking about the creation of a component?
like here: Creating New component

12. Re: ADC DeltaSigma range confusion
HaHE_2860291 Jun 15, 2018 2:30 PM (in response to EvPa_264126)omg...
heavy duty