NOA1212 datasheet(4/9 Pages) ONSEMI

Part #	NOA1212

Description	Ambient Light Sensor with Dark Current Compensation

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Manufacturer	ONSEMI [ON Semiconductor]

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NOA1212

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4

TYPICAL CHARACTERISTICS

Figure 3. Spectral Response (Normalized)

Figure 4. Light Source Dependency

(Normalized to Fluorescent Light)

Figure 5. Output Current vs. Ev

Figure 6. Output Current vs. Ev

(High Gain Mode)

Figure 7. Output Current vs. Ev, 0−1000 lux

(High Gain Mode)

Figure 8. Output Current vs. Ev, 0−100 lux

(High Gain Mode)

0

0.5

1

1.5

2

Incandescent

(2850K)

Fluorescent

(2700K)

White LED

(5600K)

Fluorescent

(5000K)

Ratio

WAVELENGTH (nm)

0.5

200

300

400

500

600

700

800

900

1000

ALS

Human Eye

0.4

0.3

0.2

0.1

0

0.8

0.6

0.7

1.0

0.9

Ev (lux)

1

0.01

0.1

1

10

100

1000 10000 100000 1000000

High Gain

Medium Gain

Low Gain

0.1

0.01

0.001

0.0001

0.00001

1000

10

100

10000

VDD = 3.3 V

Ev (lux)

1

10

100

1000

10000 100000

No Load

1 kW Load

10 kW Load

100 kW Load

1000

10

100

10000

VDD = 3.3 V

Ev (lux)

500

0

200

400

600

800

1000

White LED (5600K)

400

300

200

100

0

600

Ev (lux)

50

0

20

40

60

80

100

White LED (5600K)

40

30

20

10

0

60

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