BH1750FVI(2009) Ver la hoja de datos (PDF) - ROHM Semiconductor

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Fabricante

BH1750FVI
(Rev.:2009)

Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC

ROHM Semiconductor 

BH1750FVI

Technical Note

●Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V, Ta = 25℃, unless otherwise noted )

Parameter

Symbol

Min.

Typ.

Max.

Supply Current

Icc1

－

120

190

Units Conditions

µA Ev = 100 lx ※1

Powerdown Current

Icc2

－

0.01

1.0

µA No input Light

Peak Wave Length

λp

－

560

－

nm

Measurement Accuracy

Dark ( 0 lx ) Sensor out

S/A

0.96

1.2

1.44

times

Sensor out / Actual lx

EV = 1000 lx ※1, ※2

S0

0

0

3

count H-Resolution Mode ※3

H-Resolution Mode Resolution

rHR

－

1

－

lx

L-Resolution Mode Resolution

rLR

－

4

－

lx

H-Resolution Mode Measurement

Time

tHR

－

120

180

ms

L-Resolution Mode Measurement

Time

tLR

－

16

24

ms

Incandescent / Fluorescent Sensor

out ratio

rIF

－

1

－

times EV = 1000 lx

ADDR Input ‘H’ Voltage

VAH

0.7 * VCC

－

－

V

ADDR Input ‘L’ Voltage

VAL

－

－

0.3 * VCC

V

DVI Input ‘L’ Voltage

VDVL

－

－

0.4

V

SCL, SDA Input ‘H’ Voltage 1

VIH1

0.7 * DVI

－

－

V DVI ≧ 1.8V

SCL, SDA Input ‘H’ Voltage 2

VIH2

1.26

－

－

V 1.65V ≦ DVI ＜1.8V

SCL, SDA Input ‘L’ Voltage 1

VIL1

－

－

0.3 * DVI

V DVI ≧ 1.8V

SCL, SDA Input ‘L’ Voltage 2

VIL2

－

－

DVI – 1.26 V 1.65V ≦ DVI ＜ 1.8V

SCL, SDA, ADDR Input ‘H’ Current

IIH

－

－

10

µA

SCL, SDA, ADDR Input ‘L’ Current

IIL

－

－

10

µA

I2C SCL Clock Frequency

fSCL

－

－

400

kHz

I2C Bus Free Time

tBUF

1.3

－

I2C Hold Time ( repeated ) START

Condition

tHDSTA

0.6

－

I2C Set up time for a Repeated

START Condition

tSUSTA

0.6

－

－

µs

－

µs

－

µs

I2C Set up time for a Repeated STOP

Condition

tSUSTD

0.6

－

－

µs

I2C Data Hold Time

tHDDAT

0

－

0.9

µs

I2C Data Setup Time

tSUDAT

100

－

－

ns

I2C ‘L’ Period of the SCL Clock

tLOW

1.3

－

－

µs

I2C ‘H’ Period of the SCL Clock

tHIGH

0.6

－

－

µs

I2C SDA Output ‘L’ Voltage

VOL

0

－

0.4

V IOL = 3 mA

※1 White LED is used as optical source.

※2 Measurement Accuracy typical value is possible to change '1' by "Measurement result adjustment function".

※3 Use H-resolution mode or H-resolution mode2 if dark data ( less than 10 lx ) is need.

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© 2009 ROHM Co., Ltd. All rights reserved.

2/17

2009.04- Rev.B

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