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TAOS RGB color sensor has digital-compatible interface

Posted: 10 Feb 2003 ?? ?Print Version ?Bookmark and Share

Keywords:taos? texas advanced optoelectronic solutions? tcs230? rgb color sensor? color light converter?

Texas Advanced Optoelectronic Solutions (TAOS) Inc. has announced the availability of what it claims to be the industry's first RGB color sensor with a digital-compatible interface.

The TCS230 programmable color light-to-frequency converter integrates red, green, and blue filters on a single die and enables at least 10 bits of resolution per color channel without the need for ADCs.

Available in an 8-pin SOIC surface-mount package, the device is suited for use in colorimeter measurement applications such as color printers, medical diagnostics, computer color monitor calibration, process controls, and color matching applications with paints, textiles, cosmetics, and printed materials.

The sensor achieves its full RGB color sensing through a 64 photodiode grid which consists of red, green, blue, and a clear photodiode for overall intensity information. The photodiodes are interdigitated to minimize the effect of non-uniformity of incident irradiance. All 16 photodiodes of the same color are connected in parallel and the color selected for use by the TCS230 during operation is dynamically selectable via two programming pins.

The device is capable of responding to light over a 250,000-to-1 dynamic range, with a typical output frequency range of 2Hz to 500kHz. In addition, with two other programming pins, the user may select output scaling factors of 100, 20, or 2 percent, or a power-down mode.

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