IS455

CRT

47

Ω

CRT

L E D

Voltage regulator

Adjustment detector

Main detector

DP1

DP2

660nm

Time t

Test Circuit For Frequency

0

0

1

2

3

510

10

10

10

0

10

20

30

40

50

60

60

50

40

30

20

10

0

-10

-20

CIE standard light source A

Vo = 0

CIE standard

CIE standard light source A

PSRR= 20 log

100lx

10lx

0lx

10k

Ω

3.3k

Ω

3.3k

Ω

10k

Ω

1

2

2

1

Fig. 8 Supply Current vs. Supply Voltage

Threshold illuminance Ev (lx )

Fig. 9 Supply Current vs.

Vcc = 5V

light source A

Fig.10 Frequency

Frequency f (Hz )

*

5V

GND

Vcc= 5+

sin2

π ft (V)

Frequency ( 2 ) f ( Hz )

Fig.11 Supply Voltage Rejection Ratio

vs. Ripple Frequency ( 1 )

Fig.12 Supply Voltage Rejection Ratio vs.

Ripple Frequency ( 2 )

Frequency

( 1) f ( Hz )

Threshold Illuminance

1

1

1

1

Vcc= 5+

sin 2

π ft (V)

Ev = 1 000lx

Ev= 1 000lx

q Please refer to the chapter “ Precautions for Use.”