1. I am using ADS1248, 24 bit delta sigma adc.
2. I have attached a datasheet page explains rms & pp noise for different PGA & sampling rates
3. What does it signify.
e.g with PGA = 128 & SPS = 2000 , uRMS = 1uV & uPP = 6.48uV.
Does that mean my actual signal if less than 6.48uV than it can embed in noise & data sampled is not correct?
And data samples should always be greater than 6.48uV for correct sampling.
(considering only internal noise at this time)
4. I have noticed that even if for SPS = 2000 , for PGA = 1 there is more noise than PGA = 128.
But ENOB are more for PGA = 1 rather than PGA = 128?
Shouldn't it be other way around?
5. Is there any AN or reference data where i can understand all parameters of typical delta sigma adc
2. I have attached a datasheet page explains rms & pp noise for different PGA & sampling rates
3. What does it signify.
e.g with PGA = 128 & SPS = 2000 , uRMS = 1uV & uPP = 6.48uV.
Does that mean my actual signal if less than 6.48uV than it can embed in noise & data sampled is not correct?
And data samples should always be greater than 6.48uV for correct sampling.
(considering only internal noise at this time)
4. I have noticed that even if for SPS = 2000 , for PGA = 1 there is more noise than PGA = 128.
But ENOB are more for PGA = 1 rather than PGA = 128?
Shouldn't it be other way around?
5. Is there any AN or reference data where i can understand all parameters of typical delta sigma adc
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