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: REF3312
Could you tell me about Vout accuracy.
When thinking about the worst case of accuracy of Vout taking temperature into consideration,
I understand that it is enough to add "output voltage temperature drift" and "Thermal hysteresis" in consideration of "initial accuracy",
is it correct?
For example, if you want to calculate Vout at 80 ° C environment,
if I consider the worst case, can I calculate by adding ± 0.15% to 1.25 V plus the calculation results of "Output voltage temperature drift" and "Thermal hysteresis"?
There are many things to take into consideration when talking about absolute worst case accuracy. Errors that are guaranteed have maximum specifications, such as temperature coefficient, load regulation, and line regulation.
Other errors that have a typical specifications such as thermal hysteresis, long-term stability, and low-frequency noise can contribute to the reference accuracy as well.
In general, temperature coefficients and thermal hysteresis are known to be the largest contribution to overall reference inaccuracy.
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 Ethan T:
In reply to Yuto Sakai:
If taking Temperature Coeff. and Thermal hysteresis into consideration, then at 80C ambient, the worst case is:
Initial accuracy, 15% = ±187.5 mV
Temeperature dirft (max), (80C-25C)*30ppm/C = 1650ppm (±2.0625mV)Thermal Hysteresis (typ), 90ppm = ±.1125mV
In total: ±189.675mV
Thank you for your reply.
Please let me ask you questions.
1,I understand that "Initial accuracy" is 0.15%, but should I calculate it with 15%?
2,Is there information on the max value of "tharmal hysterisis"?
1. No, that was my mistake. Initial accuracy is 0.15% which in turn is a ±1.875mV min/max.
2. No, we do not specify a maximum value of thermal hysteresis.
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.