Light-to-Frequency Converter offers output enable option.

Press Release Summary:




Housed in 8-pin, SOIC surface mount package, Model TSL238 measures range of light levels from bright sunlight to dim moonlight. Output enable pin provides option of feeding output of multiple devices into single microprocessor input port by enabling one TSL238 device at a time. RoHS-compliant converter has wide dynamic range of over 90 dB at room temperature, is temperature compensated for UV-to-visible light range of 320-700 nm, and responds over light range of 320-1,050 nm.



Original Press Release:



TAOS, Inc. Announces Light-to-Frequency Converter That Combines Ultra-Low Light Level Measurement with Surface Mount Packaging Benefits



Latest TAOS Light-to-Frequency Converter Provides Output Enable Option That Allows Data from Multiple Sensors to be Fed Directly to a Single Microprocessor Port

December 12, 2005 (Plano, TX) -- Designers can now measure extremely low levels of light in low-profile applications that require surface mount packages with the new light-to-frequency converter from Texas Advanced Optoelectronic Solutions(R), Inc. (TAOS). Packaged in an 8-pin SOIC surface mount package, the TSL238 High-Sensitivity Light-to-Frequency Converter can accurately measure a broad dynamic range of light levels from bright sunlight to dim moonlight. The TSL238 does not require an external analog-to-digital converter because its output is a waveform whose frequency is directly proportional to the light intensity, thereby enabling the device to interface directly to a microprocessor. This latest TAOS light-to-frequency converter also has an output enable pin that provides the designer with the option of feeding the output of multiple devices into a single microprocessor input port by enabling one TSL238 device at a time.

The TSL238 High-Sensitivity Light-to-Frequency Converter is especially well-suited for medical applications measuring low-levels of fluorescent, reflective and transmissive light such as that found in pulse oximetry systems, printer applications such as media detection, appliance applications such as turbidity sensing in dishwashers and automotive applications such as rain sensors and sunload sensors.

"The TSL238 High-Sensitivity Light-to-Frequency Converter is the most sensitive light sensor TAOS has ever put into a surface mount package," said Ray King, TAOS, Inc. market specialist. "At TAOS, we have discovered that there are many different types of low-profile applications in key markets -- medical electronics. automotive electronics, printers and appliance electronics -- that need light sensors which can measure a very broad range of light levels while providing the benefits of surface mount packaging at the same time. This latest member of our Light-to-Frequency Converter product portfolio is designed to do just that."

The lead-free and RoHS compliant TSL238 has a wide dynamic range of over 90 dB at room temperature and features an extended temperature range of -25°C to 70°C. It 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 TSL238 High-Sensitivity Light-to-Frequency Converter in an 8-pin SOIC surface mount package is available from TAOS, Inc. and its authorized distributors. The TSL238 has a suggested resale price of $1.72 in 1,000-piece quantities.

About TAOS, Inc. (Texas Advanced Optoelectronic Solutions)
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) is based in Plano, TX. Established in 1998, the company develops, manufacturers and markets leadership integrated optoelectronic products. These devices combine precision mixed-signal functionality and photo-dectors on the same integrated circuit to produce advanced products with performance and cost advantages over conventional solutions. TAOS optoelectronic products include:

Light-to-Digital Converters (TSL2550, TSL2560, TSL2561, TSL2562, TSL2563)
Light-to-Frequency Converters (TSL230R, TSL230RD, TSL235R, TSL237, TSL238, TSL245R)
Light-to-Voltage Converters (TSL12, TSL12T, TSL13, TSL13T, TSL14, TSL250R, TSL250RD, TSL251R, TSL251RD, TSL252R, TSL253R, TSL254R, TSL257, TSL257T, TSL260R, TSL260RD, TSL261R, TSL261RD, TSL262R, TSL267)
Color Sensors (TCS230, TSLR257, TSLG257, TSLB257)
Color Reflective Sensors ((TRS1722, TRS1755, TRS1766)
CMOS Linear Sensor Arrays (TSL201R, TSLW201R, TSL202R, TSL208R, TSL210, TSL1401R, TSL1401CS, TSLW1401R, TSL1402R, TSL1406R, TSL1410R, TSL1412, TSL2014, TSL3301)
Custom and Semi-Custom Optoelectronic Devices and Assemblies
More information can be found at www.taosinc.com or by phone at 972-673-0759.

Trademarks
Texas Advanced Optoelectronic Solutions is a registered trademark of Texas Advanced Optoelectronic Solutions, Inc. (TAOS) of Plano, TX.

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