IS471F datasheet(2/4 Pages) SHARP

Part #	IS471F

Description	OPIC Light Detector with Built-in Signal Processing Circuit for Light Modulation System

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IS471F

*5 Defined as Eep that causes the output to go“ Low to High” (or“ High to Low” ).

s Electro-optical Characteristics

( V

CC

= 5V, Ta= 25˚C)

Parameter

Symbol

Conditions

Operating supply voltage

V CC

Supply current

ICC

VO, GL out terminals shall be opened.

Output

V OL

IOL= 16mA, E VP

VD

=0*3

V OH

EVD=EVP =0*3

IOS

EVP =EVD=0*3

IGL

V GL= 1.2V

tp

tW

E ePLH

EeD=0

*3

Light emitting

E ePHL

Hysteresis

E ePLH /E ePHL

Response

time

t PHL

t PLH

*7 External disturbing light illuminance

E VDX

*3 EeP represents illuminance of signal light in sync with the low level timing of output at GLout terminal.

Fig.1

Fig.2

Fig.3

*4 Pulse cycle (t P), pulse width (t W) are defined as shown in Fig. 2.

E eD represents illuminance of DC light. For detail, see Fig. 1.

EVP represents illuminance of signal light in sync with the low level timing of output at GLout terminal.

EVD represents illuminance of DC light. Note that the light source is CIE standard light source A.

shown in Fig. 3

(Note ) Fig. 1 shows the output waveform at GL out

Fig. 3.

0

Time

Output waveform

Ee

EeD

EeP

at GL out terminal

5V

0V

IS471F

GND

280

Ω

5V

0.33

µF

tW

tP

VCC

VO

GLout

Light source: Infrared light emitting diode (

λ p= 940nm )

GL

output

MIN.

TYP.

MAX.

Unit

4.5

-

16

V

-

3.5

7.0

mA

-

0.15

0.35

V

4.97

-

V

0.25

0.5

1.0

mA

40

55

70

mA

70

130

220

µ s

4.4

8

13.7

µ s

-

0.4

2.66

-

0.7

2.8

0.45

0.65

0.95

-

400

670

µ s

-

400

670

µ s

2000

7500

-

Low level output voltage

High level output voltage

Output short circuit current

Low level output current

diode (

λ p= 940nm )*6

µ W/mm2

terminal with IS471F connected as shown in

The waveform shown in Fig. 2 is the output voltage waveform at GLout terminal with IS471F connected as

*5 “ Low

→High ” threshold irradiance

*5 “ High

→Low ” threshold irradiance

Eep= 7.5

µ W/mm 2, *3λ p= 940nm

*4Pulse cycle

*4Pulse width

*6

“ High

→Low”

propagation delay time

“ Low

→High”

propagation dealy time

1

2

4

3

= 500lx, E

lx

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