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Si1146-M01 Dataheets PDF



Part Number Si1146-M01
Manufacturers Silicon Laboratories
Logo Silicon Laboratories
Description PROXIMITY/UV/AMBIENT LIGHT SENSOR MODULE
Datasheet Si1146-M01 DatasheetSi1146-M01 Datasheet (PDF)

Si1145/46/47-M01 PROXIMITY/UV/AMBIENT LIGHT SENSOR MODULE WITH I2C INTERFACE Features  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 Three independent LED drivers 1.71 to 3.6 V supply voltage 15 current settings from 5.6 mA to 9 µA average current (LED pulsed 360 mA for each LED driver 25.6 µs every 800 ms at 180 mA 25.6 µs.

  Si1146-M01   Si1146-M01


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Si1145/46/47-M01 PROXIMITY/UV/AMBIENT LIGHT SENSOR MODULE WITH I2C INTERFACE Features  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 Three independent LED drivers 1.71 to 3.6 V supply voltage 15 current settings from 5.6 mA to 9 µA average current (LED pulsed 360 mA for each LED driver 25.6 µs every 800 ms at 180 mA 25.6 µs LED driver pulse width plus 3 µA Si1145/46/47-M01 50 cm proximity range with single supply) pulse (<3 klx) < 500 nA standby current 15 cm proximity range with single Internal and external wake support pulse (>3 klx) Built-in voltage supply monitor and Operates at up to 128 klx (direct power-on reset controller sunlight) 25.6 µs LED “on” time keeps total High reflectance sensitivity power consumption duty cycle low < 1 µW/cm2 without compromising performance High EMI immunity without shielded or noise immunity packaging  IR LED integrated inside the module  Integrated UV index sensor  I2C 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  Heart rate monitoring  Pulse oximetry  Wearables  E-book readers  Notebooks/Netbooks Description  Portable consumer electronics  Touchless switches  Touchless sliders  Consumer electronics  Display backlighting control 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 outputs, I2C digital interface, and programmable-event interrupt output. This touchless sensor module includes an analog-to-digital converter, integrated highsensitivity visible and infrared photodiodes, digital signal processor, and three integrated infrared LED drivers with fifteen selectable drive levels. The Si1145/46/47M01 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. Pin Assignments Si114x-M01 DNC 1 SDA 2 SCL 3 VDD 4 INT 5 10 LEDA 9 LED1 8 GND 7 LED3/CVDD 6 LED2/CVDD Rev. 1.0 11/14 Copyright © 2014 by Silicon Laboratories Si1145/46/47-M01 Si1145/46/47-M01 Functional Block Diagram Si114x-M01 Si114x Proximity/Ambient Light Sensor IC VDD Regulator LED1 Temp A M ADC Visible U X Filter LED Drivers LED3 LED2 INT SCL SDA Infrared I2C Digital Sequencer & Control Logic Registers Oscillator LEDA LED1 LED3Note2 LED2Note1 GND Notes: 1. Si1146-M01 and Si1147-M01 only. Must be tied to VDD with Si1145-M01. 2. Si1147-M01 only. Must be tied to VDD with Si1145-M01 and Si1146-M01. Figure 1. Si114x-M01 Sensor Module 3.3 V Host SDA SCL INT 0.1 uF SDA SCL VDD INT Si1145 Si1145-M01 LED1 LED3 LED2 GND LEDA LED1 LED3 LED2 30 Ohm 5%, 1/16 W 22 µF, 20%, >6 V Figure 2. Si1145-M01 Module Basic Application Schematic for 1 LED 2 Rev. 1.0 3.3 V Host SDA SCL INT Si1145/46/47-M01 VBAT (3.3 to 4.3V) 0.1 uF SDA SCL VDD INT Si1147 Si1147-M01 LED1 LED3 LED2 GND No 30 Ohm Pop 5%, 1/16 W LEDA LED1 LED3 LED2 22 µF, 20%, >6 V Figure 3. Si1147-M01 Module Application Schematic for Long-Range Proximity Detection Note: For more application examples, refer to “AN498: Si114x Designer’s Guide”. 3.3 V VBAT (3.3 to 4.3V) Host SDA SCL INT 0.1 uF SDA SCL VDD INT Si1147 Si1147-M01 LED1 LED3 LED2 GND No Pop LEDA LED1 LED3 LED2 5 Ohm 5%, 1/16 W 47 µF, 20%, >6 V Figure 4. Si1147-M01 Module Application Schematic with Three LEDs and Separate LED Power Supply Rev. 1.0 3 Si1145/46/47-M01 TABLE OF CONTENTS Section Page 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.1. Performance Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.2. Typical Performance Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1. Introduction . . . . . . . . . . . . . . . .


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