INFRARED LIGHT-TO-FREQUENCY CONVERTER
Technical coantmesntAsGtill valid
r TSL245R INFRARED LIGHT-TO-FREQUENCY CONVERTER
r TAOS060D − SEPTEMBER 2007
D High-...
Description
Technical coantmesntAsGtill valid
r TSL245R INFRARED LIGHT-TO-FREQUENCY CONVERTER
r TAOS060D − SEPTEMBER 2007
D High-Resolution Conversion of Light
Intensity to Frequency With No External Components
D Communicates Directly With a
Microcontroller
D Compact Three-Leaded Plastic Package D Integral Visible-Light Cutoff Filter D Single-Supply Operation . . . 2.7 V to 5.5 V D High Irradiance Responsivity . . . Typically
500 Hz/(μW/cm2) at 940 nm
D Nonlinearity Error Typically 0.2% at 100 kHz D Available in Through-Hole and Surface
Mount Three-Lead Sidelooker Packages
D Replacement for TSL245 D Lead (Pb) Free Package Option Available
PACKAGE S SIDELOOKER (FRONT VIEW)
PACKAGE SM SURFACE MOUNT
SIDELOOKER (FRONT VIEW)
123 GND VDD OUT
123 GND VDD OUT
Description The TSL245R light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter on a single monolithic CMOS integrated circuit. Output is a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance) on the photodiode. The digital output allows direct interface to a microcontroller or other logic circuitry. The TSL245R is characterized for operation over the temperature range of −25°C to 70°C and is supplied in a 3-lead plastic side-looker package with an integral visible-light cutoff filter and lens. When supplied in the lead (Pb) free package, the devices are RoHS compliant.
Functional Block Diagram
Light
Photodiode
Current-to-Frequency Converter
Ou...
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