Datasheet > CM32181

CM32181

更新时间： 2024-11-12 01:21:31

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
16页	1002K
描述
Low Power, High Sensitivity I2C Ambient Light Sensor

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CM32181 数据手册

Serial No. 201307190009

CM32181

Low Power, High Sensitivity

I²C Ambient Light Sensor

Rev: 1.1 Revised 11^th-June-2013

Equation Chapter 1 Section 1

Description

Features

CM32181 is an advanced ambient light sensor with

I²C protocol interface and designed by the CMOS

process. It is easily operated via a simple I²C

command. The active interruption feature within the

threshold windows setting offers the benefit of

eliminating loading of the controller monitor.

• Filtron™ technology adoption :

excellent responsivity : close to real human eye

responses

• High sensitivity:

minimum detectable intensity 0.005 Lux/Bit

supports low transmittance(dark) lens design

• O-Trim™ technology adoption :

ALS output tolerance: ± 10%

• Support various Low power modes.

• Excellent temperature compensation: -40 to 85ºC

• High dynamic detection resolution

• Standard I²C protocol interface

• Interruption feature (INT) support

Programmable interrupt function with upper and

lower thresholds. Adjustable persistence to

prevent false triggers.

• Fluorescent light flicker immunity

• Software shutdown mode control

• Operation voltage from 2.5V to 3.6V

• Ambient light strength detection range over 100K

Lux

• Package: OPLGA (2.35 x 1.8 x 1.0 mm)

• Lead-free package (RoHS compliant)

CM32181 incorporates a photodiode, amplifiers and

analog circuits into a single chip. The best spectral

sensitivity is used to closely capture real human eye

responses. CM32181 has excellent temperature

compensation. Its robust refresh rate setting does not

need an external RC low pass filter. Software

shutdown mode is provided which reduces power

consumption to be less than 0.5μA. CM32181’s

operating voltage ranges from 2.5V to 3.6V and

consumes only 1uA. The maximum detective light

strength is over 167K Lux.

Block Diagram

VDD

Applications

Temperature

Sensor

• Notebook, Tablet, TV

• Mobile Phone, Smart-phone, PDA

• Automotive

SCL

Low Pass Filter

Output

buffer

with

SDA

INT

Pin Definition

I²C interface

Timing

Controller

Oscillator

ADDR

GND

OPLGA

Ground

I²C Data

Interrupt

Address Select

I²C Clock

Power

www.capellamicro.com

12 3 4 5 6 7...16

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