SBOS993A December 2021 – December 2022 OPT4001
PRODUCTION DATA
The OPT4001 device's effective resolution is dependent on both the conversion time setting and the full-scale light range. Although the LSB resolution of the linear ADC_CODES doesn’t change, the effective or useful resolution of the device is dependent on the conversion time setting and the full-scale range as per the table below. In conversion times where the effective resolution is lower, the LSBs are padded with 0.
CONVERSION_TIME register | Conversion Time | MANTESSA effective bits | EXPONENT | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Full-scale lux | 328 | 655 | 1310 | 2621 | 5243 | 10486 | 20972 | 41943 | 83886 | |||
Effective Resolution in lux | ||||||||||||
0 | 600us | 9 | 640 m | 1.28 | 2.56 | 5.12 | 10.24 | 20.48 | 40.96 | 81.92 | 163.84 | |
1 | 1 ms | 10 | 320 m | 640 m | 1.28 | 2.56 | 5.12 | 10.24 | 20.48 | 40.96 | 81.92 | |
2 | 1.8 ms | 11 | 160 m | 320 m | 640 m | 1.28 | 2.56 | 5.12 | 10.24 | 20.48 | 40.98 | |
3 | 3.4 ms | 12 | 80 m | 160 m | 320 m | 640 m | 1.28 | 2.56 | 5.12 | 10.24 | 20.48 | |
4 | 6.5 ms | 13 | 40 m | 80 m | 160 m | 320 m | 640 m | 1.28 | 2.56 | 5.12 | 10.24 | |
5 | 12.7 ms | 14 | 20 m | 40 m | 80 m | 160 m | 320 m | 640 m | 1.28 | 2.56 | 5.12 | |
6 | 25 ms | 15 | 10 m | 20 m | 40 m | 80 m | 160 m | 320 m | 640 m | 1.28 | 2.56 | |
7 | 50 ms | 16 | 5 m | 10 m | 20 m | 40 m | 80 m | 160 m | 320 m | 640 m | 1.28 | |
8 | 100 ms | 17 | 2.5 m | 5 m | 10 m | 20 m | 40 m | 80 m | 160 m | 320 m | 640 m | |
9 | 200 ms | 18 | 1.25 m | 2.5 m | 5 m | 10 m | 20 m | 40 m | 80 m | 160 m | 320 m | |
10 | 400 ms | 19 | 0.625 m | 1.25 m | 2.5 m | 5 m | 10 m | 20 m | 40 m | 80 m | 160 m | |
11 | 800 ms | 20 | 0.3125 m | 0.625 m | 1.25 m | 2.5 m | 5 m | 10 m | 20 m | 40 m | 80 m |
CONVERSION_TIME register | Conversion Time | MANTESSA effective bits | EXPONENT | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Full-scale lux | 459 | 918 | 1835 | 3670 | 7340 | 14680 | 29360 | 58720 | 117441 | |||
Effective Resolution in lux | ||||||||||||
0 | 600 us | 9 | 896 m | 1.792 | 3.584 | 7.168 | 14.336 | 28.672 | 47.344 | 114.688 | 229.376 | |
1 | 1 ms | 10 | 448 m | 896 m | 1.792 | 3.584 | 7.168 | 14.336 | 28.672 | 47.344 | 114.688 | |
2 | 1.8 ms | 11 | 224 m | 448 m | 896 m | 1.792 | 3.584 | 7.168 | 14.336 | 28.672 | 47.344 | |
3 | 3.4 ms | 12 | 112 m | 224 m | 448 m | 896 m | 1.792 | 3.584 | 7.168 | 14.336 | 28.672 | |
4 | 6.5 ms | 13 | 56 m | 112 m | 224 m | 448 m | 896 m | 1.792 | 3.584 | 7.168 | 14.336 | |
5 | 12.7 ms | 14 | 28 m | 56 m | 112 m | 224 m | 448 m | 896 m | 1.792 | 3.584 | 7.168 | |
6 | 25 ms | 15 | 14 m | 28 m | 56 m | 112 m | 224 m | 448 m | 896 m | 1.792 | 3.584 | |
7 | 50 ms | 16 | 7 m | 14 m | 28 m | 56 m | 112 m | 224 m | 448 m | 896 m | 1.792 | |
8 | 100 ms | 17 | 3.5 m | 7 m | 14 m | 28 m | 56 m | 112 m | 224 m | 448 m | 896 m | |
9 | 200 ms | 18 | 1.75 m | 3.5m | 7 m | 14 m | 28 m | 56 m | 112 m | 224 m | 448 m | |
10 | 400 ms | 19 | 0.875 m | 1.75m | 3.5 m | 7 m | 14 m | 28 m | 56 m | 112 m | 224 m | |
11 | 800 ms | 20 | 0.4375 m | 0.875 m | 1.75 m | 3.5 m | 7 m | 14 m | 28 m | 56 m | 112 m |