Photo IC diode

S9648-200SB

3

Operating circuit example

KPICC0091EC

The photo IC diode must be reverse-biased so that a positive potential is applied to the cathode.

low-pass filter.

Cutoff frequency (fc)

2

1

≈

Photodiode

for signal offset

Cathode

Anode

Vout

Reverse bias

power supply

The drawing surrounded

by the dotted line shows

a schematic diagram of

the photo IC.

Current amp

(Approx. 30000 times)

Photodiode

for signal detection

Internal protection

resistance

(Approx. 150 Ω)

Rise/fall times vs. load resistance

Directivity

0.1

1

10

100

0.01

100

10 k

1 k

100 k

Load resistance (Ω)

1 M

Rise time

Fall time

90°

80°

70°

60°

50°

40°

30°

90°

80°

70°

60°

50°

40°

30°

20°

10° 0°

10°

20°

0

20

40

60

80

100

20

40

60

80

100

Relative sensitivity (%)

(Typ. Ta=25 °C, tungsten lamp)

KPICB0077EB

KPICB0174EA