GP2U05

Internal Block Diagram

(Note) Signal GND : GND of circuit system

Frame GND : Connect to the case (conductive resin).

The signal GND is not connected to the frame GND in the case

Fig. 1 Output Voltage vs. Dust Concentration

Fig. 2 Output Voltage vs. Supply Voltage

Fig. 3 Output Voltage vs. Ambient Temperature

Detection window

Dust

Detector

circuit

Emitter

circuit

Amp.

circuit

Amp.

circuit

Peak hold

circuit

Drive

circuit

Sensitivity adjustment

Vcc

LED drive terminal

Output terminal (Vo)

Signal GND

Frame GND

5

3

2

1

4

Supply voltage Vcc (V)

0.5

1

1.5

2.5

3

3.5

4

4.5

10

11

12

13

14

15

No-dust state

State with reflective object inserted from

sensor outside and output voltage set to

Vo=3.5V (at Vcc=12V)(equivalent to

Ambient temperature Ta (˚C )

0.5

1

1.5

2.5

3

3.5

- 10

0

10

20

30

40

50

60

State with reflective object inserted from

sensor outside and output voltage set to

Vo=3.6V (at Ta=25˚C)(equivalent to

No-dust state

Dust concentration (mg/m )

3

12

10

8

6

4

2

0

0.2

0.4

0.6

0.8

1.0

Conditions :

Per Electro-optical

Characteristics

s