LX1973B

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 6

Automotive Light Sensor

TM

®

Copyright

© 2007

Rev. 1.3, 2008-01-11

S E NS ITIVI T Y

DARK CU RRENT VS TEMP

0

50

100

150

200

250

300

350

400

450

500

0.001

0.01

0.1

1

10

100

1000

Point Source Light (lux)

100

1000

10000

100000

20

40

60

80

100

Temperature (C)

NORMALIZED (PR E COMPRESSION)

100 LUX OUTPUT VOLTAGE

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

400

600

800

1000

Wavelength (nm)

LX1973B

Human Eye

0

1

2

3

4

5

6

02

4

6

8

10

12

14

Load Resistor (in kilo-ohms)

4.5V

5.0V

5.5V

Iout vs Temperature @ 10 lux

195

205

215

225

-40

-20

0

20

40

60

80

100

Temperature (ºC)

Iout @ 4.5V

Iout @ 5.0V

Iout @ 5.5V

Load =10k and 0µF;

Photo Step = Direct Light Input of 1 Lux to 0.01 Lux.