Part Number: ADS1298
I am going through the data sheet of ADS1298. I have the following queries:
1. What are the basic difference between the different members of the ADS129x series?
2. The input referred noise is 4 μVPP (150 Hz BW, G = 6).
i) What does G stand for?
ii) Considering the max voltage =5.25V. A 24 bit ADC would require an noise which is less than 5.25/(2^24) V , which is equal to 0.3μ. Please explain with the calculations involved??
iii) What is the reference volatge for the sigma delta modulator ??
In reply to Brian Pisani:
Thanks for the clarification.
I request you to kindly check the following calculations
1 LSB = Vref/(Gain*2^24)
then, 1 LSB = 5.25/(6*2^24) =0.05214 μV
But the input refered noise in the datasheet is 4 μVPP
which is >> 1LSB.
Please correct me if my understanding is wrong.
In reply to Pankaj Jha:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.