Other Parts Discussed in Thread: OPT3002, OPT3004, OPT3006, OPT3007
What is the accuracy of an OPT300x part?
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.
1. Calculate the precision percentage by looking at the "Measurement output result" row of the specs table and subtracting the maximum value from the typical value then dividing the result by the typical value. This is your maximum percentage error. Listed below are the calculated measurements for some of our more popular devices:
a) OPT3001 - 10%
b) OPT3002 - 10%
c) OPT3004 - 10%
d) OPT3006 - 20%
e) OPT3007 - 20%
2. If the lux in question is not around 2k, add an additional 2% to the error to account for linearity. This percentage ranges from 40-83k lux but is closer to 2% the further from 2k lux it is. If dealing with lux values less than 40, add 5% instead of 2%.
3. If operating values are predicted to be significantly different from 25°C, take the difference between the expected temperature and 25, then multiply that value by 0.01. Add this value to the percentage you found above.
Common worst case scenario percentage: OPT3001, expected to measure from 200-20k lux, temperature at 30°C
10% + 2% + 0.01*(30-25)% = 12.05%
Worst of the worst case percentages: OPT3007, expected to measure from 0-40 lux, temperature at -40°C
20% + 5% + 0.01*(25+40)% = 25.65%
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 and
embedded processors, along with software, tools and the industry’s largest sales/support staff.