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: DAC37J84
Please tell me about the linearity characteristics of DAC3xJ84.
1. As the input level to the DAC decreases, the linear characteristic deteriorates at a level lower than -60dBFS. Is this performance within the assumption as a device?
2. If it is normal, why is it due to the INL and DNL characteristics of the device?
3. If the above "2." is correct, please refer to the data sheet DNL=±4LSB, INL=±6LSB, When expressing as the linearity error (dB) of the analog output, I would like to teach you how to convert it.
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.
Just to clarify, are you referring to the spur performance of the DAC as the power of the fundamental decreases? A -1dBFS signal uses most of the available codes (2^16), and has good linearity. When the signal is small, only a small amount of codes are used, and this causes linearity to degrade. Please see the below graphic from the datasheet. Notice that the smaller signal (-12dBFS) has worse performance.
This performance degradation is not driven by INL and DNL error, but happens since only a portion of the available codes are being used.
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.