Sharp GP2A25 Datasheet

GP2A25

GP2A25

Light Modulation, Reflection Type
Photointerrupter

■■

1.

Light modulation system impervious to external disturbing light

2. Compact and 3-pin connector output type

(Volume : 30% less than GP2A20)

3.

Long focal distance type (Optimum detecting distance : 3 to 7 mm)

4. Capable of TTL direct connection

Applications

■

1. Copiers

Outline DimensionsFeatures

φ 3.2

33

6.2

17.7

26.5

6

12

3.1

4.5

9

8

4.5

2.5

Optical center

Connector
JAPAN AMP made 175768-3

2

φ 3

(Unit : mm)

3

7.8
2

1

2. Facsimiles

3. LBPs

Internal connection diagram

Amp.
Comparator
Constant voltage circuit
Demodulator circuit

3
2

1

Sync. detector circuit
Oscillator circuit

1 V

CC

2 V

O

3 GND

* "OPIC" (Optical IC) is a trademark of the SHARP Corporation.

An OPIC consists of a light-detecting element and signal-processing circuit
integrated onto a single chip.

■

Absolute Maximum Ratings

Parameter Symbol Rating Unit

V

V
I

OL

T

T

CC

O

opr

stg

- 0.5 to+ 7
30 V
50 mA

- 10 to+ 60

- 20 to+ 80

Supply voltage
Output voltage
Output current
Operating temperature
Storage temperature

*1 Output current vs. ambient temperature : Per Fig. 1.

“ In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs,

data books, etc. Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device.”

V

Sink current

˚C

The connector should be plugged in/out at normal temperature.

˚C

*1

Remarks

-

-

(Ta=25˚C)

Electro-optical Characteristics

■

Parameter Symbol MIN. TYP. MAX.Conditions
Supply voltage
Dissipation current (I)
Dissipation current (II)
Low level output voltage
High level output voltage
Non-detecting distance

V

I

I
V
V

L
L

Detecting distance

L

t

Response time

External disturbing light illuminance

t
E

E

PHL

PLH

*1 Test Condition for Peak Pulse Value I

R= 1Ω

V

GP2A25

R

V

CC

= 1kΩ

L

V

O

GND

= 5V

CC

VCC= 5V, RL= , smoothing value

CC

*1

= 5V, peak pulse value

V

CCP

LHL

HLS

HLL

V1

V2

CC

OL

V =5V, I =16mA, at detecting time

CC OL

V =5V, R =1kΩ , at non-detecting time

CC L

OH

*2

Kodak 90% reflective paper, V =5V

*2

Kodak 90% reflective paper, V =5V

*2

Black paper, V =5V

*2

Kodak 90% reflective paper, V =5V

*2

Black paper, V =5V

*3

VCC=5V

*4

CCP

t

W

-

CC

CC

t

P

CC

CC

CC

V

I

= Vr/1Ω

CCP

(

TYP.)= 8µs

t

W

(

t

TYP.)= 130µs

P

(Vcc=5V, Ta=25˚C)

4.75 - 5.25 V

-- mA

-- mA

150

- - 0.4 V

4.5 - - V

--

27.0

-- mm

--

9.0

7.0

-

-

--

--

3 000

1 500

r

-

-

GP2A25

30

1.0

3.0

-

-

1.0

1.0

-

-

Unit

mm

mm

mm
mm
ms
ms

lx
lx

*2 Test Condition for Detecting Distance Characteristics

GP2A25

Reflective object

Detection surface

O

V

OH

Output V

V

OL

Detecting distance L

L

HLS

L

LHS

*3 Test Circuit for Response Time

Reflective object: Kodak 90% reflective paper

= 1kΩ

R

Detection surface

GP2A25

L

L

VCC= 5V
V

O

GND

t

PHL

V

out

waveform

t

PLH

*4 Test Condition for External Disturbing Light Illuminance

EV1 : At non-detecting time EV2 : At detecting time

Emission/detection surface

Light source A

Illuminance shall be that on the emission/detection surface.
Output shall not go from "H" to "L".

Light source A

L

HLL

L

LHL

With reflective object

Without reflective object

V

OH

1.5V
V

OL

PPC paper

Emission/detection surface

7mm

Illuminance shall be that on the reflective object.
Output shall not go from "L" to "H".