Vishay VEML high-accuracy ambient light sensor
The VEML6030 is a very high sensitivity, high accuracy ambient light sensor in a miniature transparent 2 mm by 2 mm package. It includes a highly sensitive photodiode, low-noise amplifier, 16-bit A/D converter, and supports an easy-to-use I
2C bus communication interface and additional interrupt feature. The ambient light read-out is available as a digital value, and the built-in photodiode response is near that of the human eye. The 16-bit dynamic range for ambient light detection is 0 lx to ~140 klx, with resolution down to 0.0042 lx/counts.
Beside100 Hz and 120 Hz flicker noise rejection and a low temperature coefficient, the device consumes just 0.5 μA in shutdown mode. In addition, another four power-saving modes are available that allow operating current to be reduced down to just 2 μA. The device operates within a temperature range of -25 °C to +85 °C.
The VEML6030’s very high sensitivity of just 0.0042 lx allows the sensor to be placed behind very dark cover glasses that will dramatically reduce the total light reaching it. The sensor will also work behind clear cover glass, because even very high illumination - such as direct sunlight - will not saturate the device and read-outs up to 140 klx are possible.
Block Diagram
Features
Package type: surface-mount
Integrated modules: ambient light sensor (ALS)
Supply voltage range VDD : 2.5 V to 3.6 V
Communication via I2C interface
I2C bus H-level range: 1.7 V to 3.6 V
Floor life: 72 h, MSL 4, according to J-STD-020
Low stand by current consumption: typ. 0.5 μA
Applications
Ambient light sensor for mobile devices (e.g. smart phones, touch phones, PDA, GPS) for backlight dimming
Ambient light sensor for industrial on- / off-lighting operation
Optical switch for consumer, computing, and industrial devices and displays
Automotive electronic applications (intelligent cockpit/electronic rearview mirrors/instrument dimming, etc.)
Ordering Info.
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Product ordering: Mr. Cheng Email: roger.cheng@icchain.com |
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Technical support: Mr. Xu Email: xujf@icchain.com |