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Light-to-frequency converter photo IC

S9705-01DT

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Converts light intensity to frequency of output pulse

The S9705-01DT is a photo IC that combines a photodiode and a current-to-frequency converter on a CMOS chip. Output is a square wave (50 % duty ratio) with frequency directly proportional to light intensity incident on the photodiode. The CMOS level digital output allows direct connection to a microcontroller or other logic circuitry. The S9705-01DT has wide dynamic range and light intensity can be easily measured when used with a digital counter.


Features
-Converts light intensity to frequency
-Wide dynamic range: 5 orders of magnitude
-Excellent linearity
-Output timing reset function
-Digital output for direct interface to microcontroller
-4-pin plastic package

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Specifications

Package material Plastic
Package type Surface mount type
Output Digital
Supply voltage 2.7 to 5.5 V
Spectral response range 320 to 1000 nm
Peak sensitivity wavelength 620 nm
Output frequency 40 kHz
Operating temperature -40 to +85 deg.C
Storage temperature -40 to +100 deg.C
Feature CMOS level digital output

Spectral response

k_s9705_series_sr_xx.jpg

Dimensional outline (unit: mm)

KPICA0063

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