AMIS-749803 Datasheet, PDF (1/15 Pages) AMI SEMICONDUCTOR – (I2C) Ambient Light Sensor

AMIS–749803: (I²C) Ambient Light Sensor
Data Sheet
1.0 General Description
The AMIS-74980x is a wide dynamic range family of ambient light sensors (ALS) with an analog or digital output. There are several
versions of the ALS with analog output; one with 10uA 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-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.
This data sheet provides details of the DC characteristics, AC characteristics and programming information of AMIS-749803 (I²C) ALS.
2.0 Key Features
• Senses ambient light and provides an output count proportional to the ambient light
• Human eye type of spectral response
• Standard CMOS process technology
• Low power consumption
• Linear response over the full operating range
• Senses intensity of ambient light from ~0lux to well over 100,000lux
• Built-in programmable integration times of 400ms, 200ms and 100ms
• Does not require any external components
• Built-in 16-bit ADC
• I²C serial port communication
o Standard mode – 100kHz
o Fast mode – 400kHz
• Provides comfortable levels of display depending on the viewing environment
Saves display power in applications such as:
• Cell phone
• PDA
• MP3 player
• GPS
• Video recorder
3.0 Pin Out
Table 1: Pin Out
Pin Name
I2CCLK
I2CDATA
VDD
VSS
Pin No.
3
4
5
1
I, O or IO
I
IO
I
I
Function
This is the external I2C clock
that is provided by the I2C
master
This bi-directional data signal
is used for communication
between this device and the
I2C master
This pin is the power pin
This pin is the GND pin
Comments
AMI Semiconductor – July 2006, M-20599-001
1
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