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TSL235RSM-LF Datasheet(PDF) 1 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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TSL235RSM-LF Datasheet(HTML) 1 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
1 / 10 page TSL235R LIGHT-TO-FREQUENCY CONVERTER TAOS038E −SEPTEMBER 2007 1 The LUMENOLOGY r Company r r Copyright E 2007, TAOS Inc. www.taosinc.com D High-Resolution Conversion of Light Intensity to Frequency With No External Components D Communicates Directly With a Microcontroller D Compact Three-Leaded Clear-Plastic Package D Single-Supply Operation Down to 2.7 V D Nonlinearity Error Typically 0.2% at 100 kHz D Stable 150 ppm/°C Temperature Coefficient D Single-Supply Operation D RoHS Compliant (−LF Package Only) Description The TSL235R 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 device has been temperature compensated for the ultraviolet-to-visible light range of 320 nm to 700 nm and responds over the light range of 320 nm to 1050 nm. The TSL235R is characterized for operation over the temperature range of −25°C to 70°C and is supplied in a 3-lead clear plastic side-looker package with an integral lens. When supplied in the lead (Pb) free package, the device is RoHS compliant. Functional Block Diagram Light Current-to-Frequency Converter Photodiode Output Available Options DEVICE TA PACKAGE − LEADS PACKAGE DESIGNATOR ORDERING NUMBER TSL235R −25°C to 70°C 3-lead Sidelooker S TSL235R TSL235R −25°C to 70°C 3-lead Sidelooker—Lead (Pb) Free S TSL235R−LF TSL235R −25°C to 70°C 3-lead Surface-Mount Sidelooker—Lead (Pb) Free SM TSL235RSM−LF Terminal Functions TERMINAL TYPE DESCRIPTION NAME NO. TYPE DESCRIPTION GND 1 Power supply ground (substrate). All voltages are referenced to GND. OUT 3 O Output frequency. VDD 2 Supply voltage. r r Texas Advanced Optoelectronic Solutions Inc. 1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759 PACKAGE S SIDELOOKER (FRONT VIEW) 1 GND 2 VDD 3 OUT PACKAGE SM SURFACE MOUNT SIDELOOKER (FRONT VIEW) 1 GND 2 VDD 3 OUT |
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