LV0104CS datasheet(6/9 Pages) ONSEMI

Part #	LV0104CS

Description	Ambient Light Sensor, I2C Interface

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Manufacturer	ONSEMI [ON Semiconductor]

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LV0104CS

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6

Bits D5 to D0

Description

ADJD

ADJ4

ADJ3

ADJ2

ADJ1

ADJ0

0

1

66.7%

·

0

1

0

1

0

95.2%

·

1

0

1

0

108.3%

·

1

0

1

150%

66.7% to150% (ADJ5 to ADJ0=000001=66.7%, ADJ5 to ADJ0 = 100001 = 150%)

 Decreasing Sensitivity (ADJ5=0)

Sn=16*ADJ4 + 8*ADJ3 + 4*ADJ2 + 2*ADJ1 + ADJ0

S=2*Sn / (2*Sn+1)

(Example) ADJ5 to ADJ0 = 001010, Sn=8+2=10, S=20/21=0.952. The sensitivity is 95.2%

 Increasing Sensitivity (ADJ5=1)

Sn =16*ADJ4 + 8*ADJ3 + 4*ADJ2 + 2*ADJ1 + ADJ0

S=(2*Sn+1) / 2*Sn

(Example) ADJ5 to ADJ0=100110, Sn=4+2=6, S=13/12=1.083. The sensitivity is 108.3%.

(4) Read data

Measurement result is registered to ADC channel data registers (DH,DL) in below format.

D15

D14

D13

D12

D11

D10

D9

D8

DH (Data Higher byte)

DH7(2

15)

DH6(2

14)

DH5(2

13)

DH4(2

12)

DH3(2

11)

DH2(2

10)

DH1(2

9)

DH0(2

8)

D7

D6

D5

D4

D3

D2

D1

D0

DL (Data Lower byte)

DL7(2

7)

DL6(2

6)

DL5(2

5)

DL4(2

4)

DL3(2

3)

DL2(2

2)

DL1(2

1)

DL0(2

0)

 Lux calculation

(Example)

DH = “0010_0100” (DH5, DH2 = 1)

DL = “1000_0001” (DL7, DL0 = 1)

2

13(8192) + 210(1024) + 27(128) + 20(1) = 9345[lx]

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