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M52979F

2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT

MITSUBISHI ELECTRIC  

MITSUBISHI ICs (AV COMMON)

M52979F

2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT

TEMPERATURE SENSOR OUTPUT VOLTAGE

• Temperature conversion method based on temperature sensor

output voltage.

• Vta: Temperature sensor output voltage at Ta=25˚C

Vto: Temperature sensor output voltage at ambient temperature

Conversion formula Ambient temperature

= (Vto - Vta) / 22.14mV + 298˚K

PHOTOMETRY OUTPUT VOLTAGE

• Calculate the photometry output voltage at Ta=25˚C

• Ambient temperature: photometry output voltage at ambient

temperature Ta (˚ K) : Vo

Conversion formula Photometry output voltage at Ta=25˚C

=Vo / Ta X 298˚K

Conversion error range ± 0.4EV (-15 to 40˚C )

SENSOR FORM

47

1125

210

UNIT:µm

100

50µ

250

SPOT

150

2250

AVE

5

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