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Tiny integrated color sensor is unveiled
Apr 26, 2005 4:01 PM 

Agilent Technologies Inc. has announced what is said to be the industry's smallest CMOS color sensor at 5 mm x 5 mm x 1 mm. It is the HDJD-S722-QR999 color sensor and it can detect the presence of a color and measure precise color information across the full color spectrum.

"This sensor's accuracy and reliability is unmatched in the industry," said Lee Soo Ghee, vice president and general manager for the Optoelectronic Products Division in Agilent's Semiconductor Products Group.

The color sensor converts colored light into proportional RGB voltage outputs. The photodiodes convert the RGB light components into photocurrents, and the transimpedance amplifiers then convert the photocurrent to analog voltages. The voltage output of each channel (R, G and B) increases linearly with increasing light intensity. Also the gain of each channel can be independently set.

The sensor integrates color filters, photodiode arrays, amplifiers and gain selection in a single, compact package. The HDJD-S722-QR999 color sensor operates from a single 5 V power source, with operation over a –40 ºC to +85 ºC temperature range. It is housed in a quad flat no leads (QFN) lead-free package.


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