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STM32G4x 2 chanel Contunious Conversion Mode ADC DMA voltage read problem

If you take a look at DMA samples you might see that DMA configuration is done before peripheral configuration. otherwise, it would not work correct. Try to configure DMA before ADC. I also advise you ...
Nima Azad's user avatar
4 votes
Accepted

Part name of this IC - "LLA#537"

Without knowing any more than what is in the post, like dimensions and surrounding circuitry; It's likely to be an Analog Devices ADP3334ACPZ, High Accuracy, Low IQ, anyCAP® Adjustable Low Dropout ...
MrGerber's user avatar
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7 votes
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Part name of this IC - Analog Devices, 8-pin, "S 6B" A 06" "C 42"

Marking "S6B" : ADG721BRM Marking "A06" : AD8629ARMZ Marking "C42" : AD7787BRMZ pictures from LCSC:
vivier's user avatar
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0 votes

Strange ADC behavior - AVR32DA32

The answer "why does slowing the clock fix it", is probably pretty simple and that behavior is very revealing of what the problem was to begin with. The other clue is that the AVR32DA32 ...
DrM's user avatar
  • 131
3 votes

How do I create a circuit to reliably calculate a range of unknown resistances?

You can do this, I've been able to calculate resistances down to the tens of milliohms. This circuit is also useful for calibration and delivering a known amount of power. The problem you have is you ...
Voltage Spike's user avatar
  • 84.6k
1 vote

How do I create a circuit to reliably calculate a range of unknown resistances?

There is a lot of circuitry in your solution with plenty of areas where errors can be introduced. A Wheatstone bridge is probably more suitable (and simpler) for what you are trying to do. It relies ...
EricEverton's user avatar
0 votes
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MAX1415 ADC not reading voltages correctly. Incorrect setup procedure?

I've resolved the issues. There was more than a multitude of things I was doing incorrectly. I'm posting my working code in the chance that anyone uses this device and is struggling as well. ...
AuFries's user avatar
  • 113
2 votes
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Is this extra cycle before the MSB a common thing with serial bit timing?

The I²S specification says about the Word Select signal: The WS line changes one clock period before the MSB is transmitted. This allows the slave transmitter to derive synchronous timing of the ...
CL.'s user avatar
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0 votes
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Impedance for a guitar pedal into an Electrosmith Daisy Seed ADC

Here is a quick summary - all you need to know (from someone who has designed and marketed guitar pedals). in general at audio frequency, we feed a low impedance into a high impedance. A ratio of 1:...
danmcb's user avatar
  • 7,287
2 votes

Wiring of INA128 instrumentation amplifier to Wheatstone bridge

If you want an INA128 to output between 0V and 5V, you'll have to supply it with something like -3V and 8V (off the top of my head), with gain >5. Look in the datasheet at the input vs. output ...
Kuba hasn't forgotten Monica's user avatar
0 votes

Sample and Hold IC specification

A sample and hold holds one value stable while you acquire it. To use your scheme, you would need to use many sample and holds, and control them with your microcontroller. The only way you're going ...
Scott Seidman's user avatar
1 vote

Wiring of INA128 instrumentation amplifier to Wheatstone bridge

Your connections and choice to tie Vref to ground seem fine to me. You don't, however, describe what you are seeing at the output beyond a vague "no change". I suggest that if the output is ...
Scott Seidman's user avatar
2 votes
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Sample and Hold IC specification

Unfortunately you have a far more serious problem than a S&H circuit. If you need 2Msps (samples per second) then you need an ADC that can encode the signal at that rate. 15Ksps is far too slow by ...
Peter Jennings's user avatar
1 vote

How to pass a pointer to multiple functions

I don't see anywhere in the code where a pointer is required. Just use a global variable. Global variables (or pointers) can already be accessed inside of functions. You don't need to pass an ...
Drew's user avatar
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0 votes

Impedance for a guitar pedal into an Electrosmith Daisy Seed ADC

and the BOSS DS-1 shocked me because it advertises 470Ohm input (what the hell) and 1kOhm output On the DS-1 website it states 1M input and 1k output impedance. Minimum recommended load is 10k. Is 3 ...
Raonoke's user avatar
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0 votes

What is the real resolution of my voltage measurement when I use only some of the range of of the ADCchannel

The question isn't what is the real resolution it's what the noise floor is. If you have one millivolt of noise then for a 30uV count you'll have ~32 bits that are noisy which is 2^5 or 5 bits that ...
Voltage Spike's user avatar
  • 84.6k
0 votes

Sigma-Delta ADC Sample/Conversion Rate to be clarified

You're mixing up "sampling frequency of the ADC" and "oversampling frequency of the modulator". Those are different things. A 1MSPS ADC will give you 1 million samples per second ...
user9876's user avatar
  • 101
0 votes

How to calculate measurement error in a voltage divider?

thanks for the video posted, it's very helpful to me. I think the partial derivative method is correct from math perspective. But I would argue it's overestimated. If the value calculated is good ...
cnMuggle's user avatar
  • 124
1 vote

What is the real resolution of my voltage measurement when I use only some of the range of of the ADCchannel

It doesn't change. If your input range is from 0 to 65535 for 0 to 2V, applying an input of 0.6V will simply give an output of (0.6/2) * 65535 = 19661. The resolution has not changed, you are simply ...
danmcb's user avatar
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