The TSL237 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.
Key Features
egration techniques. Frequency measurements provide the added benefit of averaging out random- or high-frequency variations (jitter) resulting from noise in the light signal. Resolution is limited mainly by available counter registers and allowable measurement time. Frequency measurement is well suited fo.
Full PDF Text Transcription for TSL237 (Reference)
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TSL237. For precise diagrams, and layout, please refer to the original PDF.
Technical coantmesntAsGtill valid r r D High-Resolution Conversion of Light Intensity to Frequency With No External Components D High Irradiance Responsivity . . . 2.3 kH...
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ith No External Components D High Irradiance Responsivity . . . 2.3 kHz/(mW/cm2) at λp = 524 nm D Low Dark Frequency . . . < 2 Hz at 505 C D Single-Supply Operation . . . 2.7 V to 5.5 V D Stable 200 ppm/°C Temperature Coefficient D Interfaces Directly to a Microcontroller D RoHS Compliant (−LF Package Only) TSL237 HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER TAOS052J − SEPTEMBER 2008 PACKAGE S SIDELOOKER (FRONT VIEW) PACKAGE SM SURFACE MOUNT SIDELOOKER (FRONT VIEW) 123 GND VDD OUT 123 GND VDD OUT Description The TSL237 light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter on a sin
TSL237 Datasheet
