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AMI SEMICONDUCTOR

AMIS-74980X Datasheet Preview

AMIS-74980X Datasheet

Ambient Light Sensor

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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
www.DataSheet4U.com 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.




AMI SEMICONDUCTOR

AMIS-74980X Datasheet Preview

AMIS-74980X Datasheet

Ambient Light Sensor

No Preview Available !

Block Diagram
Typical Applications
• PDA and handheld displays
• Cellular phone displays
• LCD monitors
• TV screens
• Large format LED displays
Terminal Functions
• Automotive
- In-car entertainment systems (video)
- GPS displays
- Headlamps
- Rearview mirrors
- Dashboards
Analog output:
Name Pin #
GND 1
Type Description
Power supply ground. All voltages
are referenced to GND.
Data
VDD
3
2
O Current output
Supply voltage
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Operating Characteristics
Digital (SMBus or I²C) output:
Name Pin #
GND 4
CLK 5
Data
VDD
8
1
Type Description
Power supply ground. All voltages
are referenced to GND.
I
Serial clock input terminal - clock
signal for I2C or SMBus serial data
IO
Serial data IO terminal - serial IO
I2C or SMBus serial data
Supply voltage
Analog output:
Digital (SMBus or I²C) output:
Supply voltage
Operating temperature
Output current at:
Ev = 1000lux,
λp = 550nm
Dark current at:
Ev = 0lux,
Temp = 25°C
Typical
3.3V ± 10%
0 - 70°
10, 100, 250, 500,
or 1000
Units
V
C
uA
0.12 nA
Supply voltage
Operating temperature
Operating frequency
Active current
Output counts at:
Ev = 1000lux,
λp = 550nm
Output counts at:
Ev = 0lux,
Temp = 25°C
Typical
3.3V ± 10%
0 - 70°
10 - 100 or up to
400kHz (I²C)
0.35
65536
1
Contact your local sales office at www.amis.com/sales for more information.
Units
V
C
kHz
mA
counts
counts
AMI Semiconductor
www.amis.com
Devices sold by AMIS are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMIS makes no warranty, express, statutory, implied
or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMIS makes no warranty of
merchantability or fitness for any purposes. AMIS reserves the right to discontinue production and change specifications and prices at any time and without notice. AMI
Semiconductor's products are intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high
reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing by AMIS for such
applications. Copyright ©2006 AMI Semiconductor, Inc. M-20558-001, FO


Part Number AMIS-74980X
Description Ambient Light Sensor
Maker AMI SEMICONDUCTOR
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AMIS-74980X Datasheet PDF






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