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TSL230RD Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 15 page TSL230RD, TSL230ARD, TSL230BRD PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS TAOS054P − OCTOBER 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 Programmable Sensitivity and Full-Scale Output Frequency D Communicates Directly With a Microcontroller D High Irradiance Responsivity . . . 790 Hz/(mW/cm2) Typical at 640 nm D Single-Supply Operation . . . 2.7 V to 5.5 V D Power-Down Feature ...5 mA Typical D Nonlinearity Error Typically 0.2% at 100 kHz D Stable 200 ppm/°C Temperature Coefficient D Low-Profile Lead (Pb) Free and RoHS Compliant Surface-Mount Package Description The TSL230RD, TSL230ARD, and TSL230BRD programmable light-to-frequency converters combine a configurable silicon photodiode and a current-to-frequency converter on single monolithic CMOS integrated circuit. The output can be either a pulse train or a square wave (50% duty cycle) with frequency directly proportional to light intensity. Device sensitivity is selectable in three ranges, providing two decades of adjustment. The full-scale output frequency can be scaled by one of four preset values. All inputs and the output are TTL compatible, allowing direct two-way communication with a microcontroller for programming and output interface. The output enable (OE) places the output in the high-impedance state for multiple-unit sharing of a microcontroller input line. The devices are available with absolute output frequency tolerances of ±10% (TSL230BRD), ±15% (TSL230ARD), and ±20% (TSL230RD). They have been temperature compensated for the ultraviolet-to-visible light range of 320 nm to 700 nm and respond over the light range of 320 nm to 1050 nm. The devices are characterized over the temperature range of −25°C to 70°C. Functional Block Diagram Light Current-to-Frequency Converter Photodiode Array S0 S1 S2 S3 OE Output r r Texas Advanced Optoelectronic Solutions Inc. 1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759 8 S3 7 S2 6 OUT 5 VDD PACKAGE D 8-LEAD SOIC (TOP VIEW) S0 1 S1 2 OE 3 GND 4 |
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