ULTRA-LOW CURRENT CONSUMPTION PHOTOCURRENT DETECTION IC

S-5470 Series

Seiko Instruments Inc.

13

Application Circuits

1.

Certain photocurrent level detector

If PD or LED exceeds a certain value, the output signal inverts.

VDD

OUT

VSS

S-5470

Series

INP

INM

0.1

μF

D1

Figure 20

Example Certain Photocurrent Level Detector (CMOS Output Product)

VDD

OUT

VSS

S-5470

Series

INP

INM

0.1

μF

R

100 k

Ω

D1

Figure 21

Example Certain Photocurrent Level Detector (Nch Open-drain Output Product)

Caution

The above connection diagram and constant will not guarantee successful operation. Perform

thorough evaluation using the actual application to set the constant.