This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: ADS9224R
Why the FSR is different between fIN=2kHz and fIN=100kHz according to the datasheet?
Thanks and best regards, Charles Chen Applications Engineer | LED Drivers
Check out these helpful resources
LED Drivers ICs | LED Drivers Reference designs | LED Driver Basics Training series
Thank you for your post.
What you're referring to is the amplitude of the input test signal. The full-scale range of the ADC is not dependent on the input frequency and is always equal to +/- 4.096V when VREF = 2.5 V.
For testing purposes, we often limit the input amplitude to -0.5 dBFS. This is commonly done as an industry standard to avoid unwanted non-linearities that come from operating at or above the ADC supplies. At higher frequencies, these non-linearities can be more exaggerated even when the amplitude is less than the supply. As expected, there is a noticeable drop-off in noise and linearity performance between 100 kHz and 1 MHz.
Applications Engineer | Precision ADCs
Are you working on a bio-potential application? Check out these helpful resources: ADS129x BIOFAQ | ECG Online Training
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Ryan Andrews:
Thanks for your answer.
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. 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.