SFH7771 datasheet(9/30 Pages) OSRAM

9 / 30 page

Version 1.1

SFH 7771

22.04.2016

Characteristics (Ta = 25°C)



Parameter

Symbol

Value

Unit

min.

typ.

max.

Ambient Light Sensors: ALS_VIS and ALS_IR diode

Wavelength of max. sensitivity for ALS_VIS



Smax

520

Spectral range of sensitivity (10% of S

max) of

ALS VIS

S10%

380

950

Wavelength of max. sensitivity of ALS_IR

Smax

880

Spectral range of sensitivity (10% of S

max) of

ALS IR

S10%

800

1070

Illuminance measurement range is

programmable

(MODE_CONTROL (0x41) = 0x0A or 0x0B)

0.001

43000

ALS_VIS sensor output

(1000lx; white LED; V

DD = 2.5V)

(MODE_CONTROL (0x41) = 0x08)

(ALS_PS_CONTROL (0x42): Gain = X1)

ALS

VIS_out

1275

1500

1725

counts

ALS_IR sensor output

(324µW/cm²; IRED 850 nm; V

DD = 2.5V)

(MODE_CONTROL (0x41) = 0x08)

(ALS_PS_CONTROL (0x42): Gain = X1)

ALS

IR_out

516

608

700

counts

ALS_VIS sensor output at darkness

(MODE_CONTROL (0x41) = 0x08)

(ALS_PS_CONTROL (0x42): Gain = X1)

ALS

VIS_out

2counts

ALS_IR sensor output at darkness

(MODE_CONTROL (0x41) = 0x08)

(ALS_PS_CONTROL (0x42): Gain = X1)

ALS

IR_out

2counts

Resolution of the digital output signal based on

gain settings for ALS_VIS:

MODE_CONTROL (0x41) = 0x08



int ALS = 100ms

Gain X1

Gain X2

Gain X 64

Gain X 128



High sensitive mode:

MODE_CONTROL (0x41) = 0x0A



int ALS = 400ms

Gain X 128

ALS

VIS_out



0.68

0.34

0.01

0.005



0.001

lx/count

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