ADC simultaneous measurement

[sag]

ADC1_IN1

ADC2_IN3

ADC3_IN1

As i want to measure few signals simultaneously.

can i configure by this way like ADC1, ADC2, ADC 3 

or Separate channels from same ADC1

[SofLit · Accepted solution]

Hello,

Not sure what do you mean by "to measure few signals simultaneously."!

You need to refer to the reference manual RM0440 for that:

From ADC introduction:

The modes are described in the ADC section:

ADC1 and ADC2 can work together in Dual mode in specifically in "Regular simultaneous mode":

See figure 139:

Triple mode is not available on this product.

Hope I answered your question

[sag]

Lets say i want to measure 6 ADC input simultaneously.

Then i have to use 3 channels from ADC1 and rest 3 channels from ADC2.

I am using STM32G474VET3  (G4 series)

[SofLit]

Again, "6 ADC input simultaneously." is not clear. 

The simultaneous mode is described in the RM, you can measure only two channels at time T with two ADCs.

[sag]

SIX (6) ADC input signals to be measured simultaneously.

Like ADC 1 channel input 1 to temperature measurement 

Like ADC 1 channel input 2 to current measurement 

and so on

[SofLit]

Do you mean in a sequence of 6 channels? 

Input 1 then input 2, Input 3 ...until input 6? not sampled at the same time (successively not simultaneously)?

[sag]

This is very simple question 

Input 1 then input 2, Input 3 ...until input 6 need to be measured simultaneously.

Does is possible by ADC1 and ADC 2

Input 1 then input 2, Input 3 to ADC1

Input 4 then input 5 , Input 6 to ADC2

i cant elaborate more on this

[SofLit]

"Does is possible by ADC1 and ADC 2

Input 1 then input 2, Input 3 to ADC1

Input 4 then input 5 , Input 6 to ADC2"

This is not a simultaneous conversion. It's a done successively ... and can be done by 2 ADCs in DUAL mode.

I've already shared a figure from the RM that fits your needs ..

And simultaneous conversion is something else, that's why:

"This is very simple question " -> Sorry this is not a simple question .. You need to find the right words to describe what you need ..

[sag]

How to do in simultaneous mode then,

I explained these wordings earlier too and never talk about sequential

If need to measure all 6 signals simultaneously

 i want to measure 6 ADC input simultaneously.

I can raise my question with another post if not able to get satisfactory answer by STM