VD6283TX datasheet(40/59 Pages) STMICROELECTRONICS

40 / 59 page

8.2

Channel sensitivity

Unless otherwise stated: Tamb = 25 °C, typical supply (VDD) voltage = 1.8 V, and EXTIME = 50 ms. ST performs

a light calibration of every part in production, with individual adjustment of counts into the product memory. A

calibration factor is stored in the VD6283 OTP memory and calibrated data can be retrieved through the software

driver.

Table 17. Clear channel

Parameter

Conditions

Min.

Typ.

Max.

Unit

Clear channel,

irradiance responsivity

before calibration

White LED (CCT = 4000 K)

16-bit ADC readout

AGAIN = 5x

49.9

62.3

74.8

Counts/(µW/cm²)

Clear channel,

irradiance responsivity

after calibration

56.1

62.3

68.6

Table 18. Visible channel

Parameter

Conditions

Min.

Typ.

Max.

Unit

Visible channel,

irradiance responsivity

before calibration

White LED (CCT = 4000 K)

16-bit ADC readout

AGAIN = 10x

39.7

49.7

59.6

Counts/(µW/cm²)

Visible channel,

irradiance responsivity

after calibration

44.7

49.7

54.6

Table 19. Red channel

Parameter

Conditions

Min.

Typ.

Max.

Unit

Red channel,

irradiance responsivity

before calibration

White LED (CCT = 4000 K)

16-bit ADC readout

AGAIN = 10x

11.7

14.6

17.5

Counts/(µW/cm²)

Red channel,

irradiance responsivity

after calibration

13.1

14.6

16.0

Table 20. Green channel

Parameter

Conditions

Min.

Typ.

Max.

Unit

Green channel,

irradiance responsivity

before calibration

White LED (CCT = 4000 K)

16-bit ADC readout

AGAIN = 10x

23.6

29.5

35.4

Counts/(µW/cm²)

Green channel,

irradiance responsivity

after calibration

26.5

29.5

32.4

VD6283TX

Channel sensitivity

DS13735 - Rev 1

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