Part Number: TMP006
I'm currently working on a project where a TMP006 will be used to read temperatures that should be 0.5°C accurate whithin the range of -10°C to +10°C.
As I understood from sbou142.pdf, I'm supposed to find a set of constants (A1, A2, B0, B1, B2 and C) so that when I calculate this:
I'll end up with the object temperature in Kelvin, correct ?
For now I have two questions:
1 - Is the Tref mentioned on equations (3) and (4) of the referred document always 25°C regardless of any measurement condition ?
I've made tests changing the environmental conditions and used an external probe to measure the object temperature. Ended up with a table containing sensor data for 7 different Tdie temperatures for a -5°C object, 6 Tdie temperatures for a +10°C object and 6 Tdie temperatures for a +25°C object, a total of 19 points with an average of 30 samples per point.
2 - Is there any algorithm, software, standard excel spreadsheet, website, or anything you recommend so I can calculate the constants ?
Best regards
Alex
Temperatura da Cápsula °C |
Temperatura do Chip °C |
Leitura do IR | IR reading |
-5,5 | 5,019 | -354,5 | -355 |
-6,6 | 14,509 | -2043 | -2043 |
-5,2 | 10,002 | -1887,6 | -1888 |
-4,6 | 19,023 | -2552,8 | -2553 |
-3,7 | 25,002 | -3806,3 | -3806 |
-4,6 | 25,012 | -3598,9 | -3599 |
-3,2 | 40,048 | -6572 | -6572 |
8,8 | 5,015 | 1118,6 | 1119 |
10,3 | 24,509 | -2866,7 | -2867 |
9,7 | 33,096 | -4363,2 | -4363 |
10,3 | 38,002 | -5036,7 | -5037 |
8,5 | 40,136 | -5244,2 | -5244 |
9 | 25 | -2469,5 | -2470 |
24,8 | 40,138 | -5313,2 | -5313 |
24,8 | 35,063 | -3210,1 | -3210 |
24,8 | 25,003 | -1647,3 | -1647 |
24,7 | 30,015 | -1954,6 | -1955 |
24,5 | 19,783 | -1497 | -1497 |
24,5 | 15,005 | -876,6 | -877 |