ams launches smallest available XYZ tri-stimulus sensor for True Color consumer applications
Providing digital measurements of illuminance (brightness) and chromaticity matching the CIE 1931 Standard Observer XYZ scale enabeling True Color functionalities which is the industry standard for quantifying the average humans perception of light â€“ the miniature TCS3430 may be used for functions such as display management, automatic white color balancing or color management.
OEMs which move from RGB color sensors to the new cost effective TCS3430 will be able to achieve dramatic improvements in camera and display performance, enabling users of mobile devices to enjoy:
- Adapting the display color and brightness towards warm or cool white, based on the Correlated Color Temperature (CCT) level of the environment
- High quality display calibration to provide color balancing and vidid images based on the source input
- More realistic images and almost zero color distortion from the camera, rivaling the color balancing performance of professional-grade photography equipment
The TCS3430 benefits from proprietary ams technology for fabricating interferometric optical filters directly on the wafer. The ams interferometric filters can be made with the spectral characteristics of the XYZ spectral responsivity model of the human eye. In the TCS3430, the filters provide five channels: X, Y and Z channels and two infrared channels. The IR channels are used for advanced light source detection. The Y channelâ€™s response to the green portion of the visible light spectrum provides a measure of illuminance, enabling the TCS3430 to operate as an ambient light sensor as well as a color sensor.
The TCS3430 is supplied as a packaged IC measuring 2.41mm x 1.75mm x 1.00mm. The aperture of the sensor needs to be covered by an achromatic diffuser. The TCS3430s high sensitivity and wide dynamic range mean that it can be mounted behind dark or transparent cover glass. It ope-rates from a 1.8V supply, and provides an I2C interface to a host processor.