SI1142 datasheet(1/66 Pages) SILABS

部品番号	SI1142

部品情報	PROXIMITY/AMBIENT LIGHT SENSOR IC WITH I2C INTERFACE

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Preliminary Rev. 0.5 1/11

Si1141/42/43

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Si1141/42/43

P ROXI MITY/A MBIEN T L IGHT S ENSOR IC WI T H I 2C I NTE R FACE

Features

Applications

Description

The Si1141/42/43 is a low-power, reflectance-based, infrared proximity and ambient

light sensor with I2C digital interface and programmable-event interrupt output. This

touchless sensor IC includes an analog-to-digital converter, integrated high-

sensitivity visible and infrared photodiodes, digital signal processor, and one, two, or

three integrated infrared LED drivers with fifteen selectable drive levels. The Si1141/

42/43 offers excellent performance under a wide dynamic range and a variety of light

sources including direct sunlight. The Si1141/42/43 can also work under dark glass

covers. The photodiode response and associated digital conversion circuitry provide

excellent immunity to artificial light flicker noise and natural light flutter noise. With

two or more LEDs, the Si1142/43 is capable of supporting multiple-axis proximity

motion detection. The Si1141/42/43 devices are provided in a 10-lead 2x2 mm QFN

package and are capable of operation from 1.8 to 3.6 V over the –40 to +85 °C

temperature range.

 QuickSense™ integrated infrared

proximity detector



Proximity detection adjustable from

under 1 cm to over 1 m



Three independent LED drivers



15 current settings from 5.6 mA to

360 mA for each LED driver



25.6 µs LED driver pulse width



500 mm proximity range with single

pulse (<2.5 klx)



150 mm proximity range with single

pulse (>2.5 klx)



Operates at up to 128 klx (direct

sunlight)



Minimum reflectance sensitivity

< 1 µW/cm2



High EMI immunity without shielded

packaging

 QuickSense™ integrated ambient

light sensor



10 mlx resolution possible, allowing

operation under dark glass



1 to 128 klx dynamic range possible

across two ADC range settings



17-bit resolution



Accurate lux measurements

possible with IR correction

algorithm



25.6 µs measurement cycle keeps

total power consumption duty cycle

low without compromising

performance or noise immunity

 Industry's lowest power consumption



1.8 to 3.6 V supply voltage



9 µA average current (LED pulsed

25.6 µs every 800 ms at 180 mA

plus 3 µA Si114x supply)



< 500 nA standby current



Internal and external wake support



Built-in voltage supply monitor and

power-on reset controller

 Serial communications



Up to 3.4 Mbps data rate



Slave mode hardware address

decoding

 Small-outline 10-lead 2x2 mm QFN

 Temperature Range



–40 to +85 °C

 Handsets

 E-book readers

 Notebooks/Netbooks

 Portable consumer electronics

 Audio products

 Security panels

 Tamper detection circuits

 Dispensers

 Valve controls

 Smoke detectors

 Touchless switches

 Touchless sliders

 Occupancy sensors

 Consumer electronics

 Industrial automation

 Display backlighting control

 Photo-interrupters

Pin Assignments

LED1

VDD

SCL

GND

INT

2

3

4

9

8

7

6

QFN-10

LED3

LED2

SDA

1

DNC

10

5

NC

同様の部品番号 - SI1142

メーカー	部品番号	データシート	部品情報
Silicon Laboratories	SI1142-A11-GMR	1Mb / 77P	PROXIMITY/AMBIENT LIGHT SENSOR IC WITH I 2C INTERFACE Rev. 1.42 3/21
	SI1142-M01-GMR	1Mb / 79P	PROXIMITY/AMBIENT LIGHT SENSOR MODULE WITH I2C INTERFAC Rev. 1.1 12/14
	SI1142-M01-GMR	1Mb / 79P	PROXIMITY/AMBIENT LIGHT SENSOR MODULE WITH I2C INTERFACE Rev. 1.1 12/14

More results

同様の説明 - SI1142

メーカー	部品番号	データシート	部品情報
Silicon Laboratories	SI1153-AB9X-GMR	918Kb / 61P	Proximity/Ambient Light Sensor IC with I2C Interface Rev. 1.3
	SI115X	1Mb / 65P	Proximity/Ambient Light Sensor IC with I2C Interface Rev. 1.4
	SI1153	1Mb / 58P	Proximity/Ambient Light Sensor IC with IC Interface
	SI1143-M01-GMR	1Mb / 79P	PROXIMITY/AMBIENT LIGHT SENSOR MODULE WITH I2C INTERFACE Rev. 1.1 12/14
Everlight Electronics C...	EAAPMST3923A3	726Kb / 23P	Ambient Light Sensor and Proximity Sensor with I2C Interface
Everlight Electronics C...	EAAPMST3923A2	836Kb / 20P	Ambient Light Sensor and Proximity Sensor with I2C Interface
Silicon Laboratories	SI1141-A11-GM	1Mb / 77P	PROXIMITY/AMBIENT LIGHT SENSOR IC WITH I 2C INTERFACE Rev. 1.42 3/21
ON Semiconductor	NOA1302	226Kb / 9P	Ambient Light Sensor with I2C Interface August, 2009 ??Rev. 1
ON Semiconductor	LV0104CS	225Kb / 9P	Ambient Light Sensor, I2C Interface April 2015- Rev. 2
AMIC Technology	ASR8601	40Kb / 1P	Ambient Light Sensor with I2C digital interface