S-5470A21I-M5T1U Datasheet, PDF (14/24 Pages) Seiko Instruments Inc – ULTRA-LOW CURRENT CONSUMPTION

ULTRA-LOW CURRENT CONSUMPTION NORMALLY-OFF FAINT SIGNAL DETECTION IC
S-5470 Series
Rev.1.3_01
2. Photocurrent level difference detector
If the difference in the photocurrent generated by the two PDs or the two LEDs exceeds a certain value, the output
signal inverts.
VDD
INP
INM
S-5470
Series
OUT
VSS
D1
D2
0.1 μF
V_OUT
Figure 22 Example Photocurrent Level Difference Detector (CMOS Output Product)
VDD
INP
INM
S-5470
Series
OUT
VSS
D1
D2
R
100 kΩ
V_OUT
0.1 μF
Figure 23 Example Photocurrent Level Difference 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.
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