Si1145/46/47-M01 PROXIMITY/UV/AMBIENT LIGHT SENSOR MODULE WITH 2 I C INTERFACE Features Pin Assignments Integrated infrared proximity detector Accurate lux measurements with IR Proximity detection adjustable from correction algorithm under 1 cm to over 50 cm Industry s lowest power consumption Si114x-M01 Three independent LED drivers 1.71 to 3.6 V supply voltage 15 current settings from 5.6 mA to 9 A average current (LED pulsed 360 mA for each LED driver 25.6 s every 800 ms at 180 mA DNC 1 10 LEDA 25.6 s LED driver pulse width plus 3 A Si1145/46/47-M01 50 cm proximity range with single supply) SDA 2 9 LED1 pulse (<3 klx) < 500 nA standby current 15 cm proximity range with single Internal and external wake support SCL 3 8 GND pulse (>3 klx) Built-in voltage supply monitor and VDD 4 7 LED3/CVDD Operates at up to 128 klx (direct power-on reset controller sunlight) 25.6 s LED on time keeps total INT 5 6 LED2/CVDD High reflectance sensitivity power consumption duty cycle low 2 without compromising performance < 1 W/cm or noise immunity High EMI immunity without shielded IR LED integrated inside the module packaging 2 Integrated UV index sensor I C Serial communications Integrated ambient light sensor Up to 3.4 Mbps data rate 100 mlx resolution possible, Slave mode hardware address allowing operation under dark glass decoding (0x60) 1 to 128 klx dynamic range possible Small-outline 10-lead across two ADC range settings 4.9x2.85x1.2 mm QFN Temperature Range 40 to +85 C Applications Handsets Portable consumer electronics Heart rate monitoring Touchless switches Pulse oximetry Touchless sliders Wearables Consumer electronics E-book readers Display backlighting control Notebooks/Netbooks Description The Si1145/46/47-M01 is a low-power, reflectance-based, proximity, UV Index and ambient light module with integrated single IR LED, two additional LED driver 2 outputs, I C digital interface, and programmable-event interrupt output. This touchless sensor module includes an analog-to-digital converter, integrated high- sensitivity visible and infrared photodiodes, digital signal processor, and three integrated infrared LED drivers with fifteen selectable drive levels. The Si1145/46/47- M01 offers excellent performance under a wide dynamic range and a variety of light sources including direct sunlight. The Si1145/46/47-M01 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 Si1145/46/47-M01 is capable of supporting multiple-axis proximity motion detection. The Si1145/46/47-M01 devices are provided in a 10-lead 4.9x2.85x1.2 mm QFN package and are capable of operation from 1.71 to 3.6 V over the 40 to +85 C temperature range. Rev. 1.0 11/14 Copyright 2014 by Silicon Laboratories Si1145/46/47-M01 Not Recommended for New DesignsSi1145/46/47-M01 Functional Block Diagram Si114x-M01 Si114x Proximity/Ambient Light Sensor IC VDD LED1 Regulator LEDA LED1 LED Temp A Drivers Filter LED3 ADC Note2 LED3 M LED2 Note1 U LED2 Visible X Digital Sequencer & Control Logic Infrared INT SCL Registers Oscillator 2 I C GND SDA Notes: 1. Si1146-M01 and Si1147-M01 only. Must be tied to V with Si1145-M01. DD 2. Si1147-M01 only. Must be tied to V with Si1145-M01 and Si1146-M01. DD Figure 1. Si114x-M01 Sensor Module 3.3 V 30 Ohm 5%, 1/16 W Si1145-M01 Host SDA LEDA SDA LED1 SCL LED1 SCL VDD LED3 LED3 INT LED2 LED2 22 F, 20%, >6 V INT 0.1 uF GND Figure 2. Si1145-M01 Module Basic Application Schematic for 1 LED 2 Rev. 1.0 Not Recommended for New Designs Si1145