AMIS-74980X Datasheet, PDF (1/2 Pages) AMI SEMICONDUCTOR – Ambient Light Sensor

AMI Semiconductor
AMIS-74980x Ambient Light Sensor
Key Features
• Small, integrated solution
• Approximates human eye response
• Reports multi-level ambient light intensity
• Flexible design
- Large dynamic range
- User programmable integration time
- Analog output options
- Digital output options (16-bits): SMBus, I²C
• Programmable - based on application
• Low power design
• Flicker filtering (fluorescent 50Hz - 60Hz)
• Standard CMOS process technology
• Single, two or tri-color (second generation) diode sensors
for different accuracies
Product Description
The AMIS-74980x is a wide dynamic range light sensor
with an analog or digital output. There are several
versions of the analog output; one with 1uA current
output at 1000lux all the way to 1mA at 1000lux. The
digital output version has a built-in 16-bit ADC with a 2-
Application Information
The AMIS-74980x is primarily used in ambient light
detection applications, such as a displays back control,
where adjustments are made to display brightness or
contrast based on the brightness of the ambient light, as
perceived by the human eye. Conventional SI detectors
Spectral Responses
wire SMBus or I²C digital interface. The sensor employs
AMI Semiconductor's proprietary CMOS image sensing
technology which provides low noise and high dynamic
range output signals and a light response similar to the
response of the human eye.
respond too strongly to infrared light - a large
component of incandescent lighting - preventing natural
human eye response. The AMIS-74980x effectively filters
infrared light through proprietary techniques providing
human eye response.