SI1153-AA00-GM - SILICON LABS - Datasheet.Directory

Si1153 Data Short

Proximity/Ambient Light Sensor IC with I2C Interface

The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detec-

tor with I2C digital interface and programmable-event interrupt output.

This touchless sensor IC includes dual 23-bit analog-to-digital converters, an integrated

high-sensitivity array of visible and infrared photodiodes, a digital signal processor, and

three integrated LED drivers with programmable drive levels. The Si1153 offers excel-

lent performance under a wide dynamic range and a variety of light sources, including

direct sunlight. The Si1153 can also work under dark glass covers. The photodiode re-

sponse and associated digital conversion circuitry provide excellent immunity to artificial

light flicker noise and natural light flutter noise. With two or more LEDs, the Si1153 is

capable of supporting multiple-axis proximity motion detection. The Si1153 is provided in

a 10-lead 2x2 mm DFN package or in a 10-lead 2.9x4.9 mm LGA module with integra-

ted LED, and is capable of operation from 1.62 to 3.6 V over the –40 to +85 °C tempera-

ture range.

Applications:

• Wearables

• Handsets

• Display backlighting control

• Consumer electronics

MUX

ADC1

ADC2

Signal

Processor

and

Control

Internal Osc.

ALS Photodiodes

LED

Drivers

I2C

Engine

INT

SCL

SDA

Regulator

VDD

LED1

LED2 *

LED3 **

(Filter Only in

AA09 & AA9X

versions)

LIGHT

I2C addr sel

** Pull up to VDD with 47 kOhm resistor

* Pull up to VDD with 47 kOhm resistor to select primary I2C address (0x53),

or down to GND for alt I2C address 0x52.

940 nm Bandpass

Filter.

KEY FEATURES

• Proximity detector

• From under 1 cm to 50 cm without

additional lensing.

• From under 1 cm to 200 cm with

additional lensing (e.g. 5 mm

hemispherical lens as in our EVB).

• Up to three independent LED drivers.

• 30 current settings from 5.6 mA to 360

mA for each LED driver.

• Operates in direct sunlight with optional

on-die 940 nm passband filter.

• On die 940 bandpass filter that rejects

unwanted visible light and IR from

daylight and other sources (Si1153-

AA09/AA9X).

• Ambient light sensor

• <100 mlx resolution possible, allowing

operation under dark glass.

• Up to 128 klx dynamic range possible

across two ADC range settings.

• Industry’s lowest power consumption

• 1.62 to 3.6 V supply voltage.

• 9 μA average current (LED pulsed 25.6

μs every 800 ms at 180 μA plus 3 mA

Si1153 supply).

• <500 nA standby current.

• 25.6 μs LED “on” time keeps total power

consumption duty cycle low without

compromising performance or noise

community.

• Internal and external wake support.

• Built-in voltage supply monitor and

power-on reset controller.

• Trimmable internal oscillator with typical 1%

accuracy.

•I2C Serial communications

• Up to 3.4 Mbps data rate.

• Slave mode hardware address decoding.

• Two package options:

• 10-lead 2 x 2 x 0.65 mm DFN

• 10-lead 2.9 x 4.9 x1.2 mm LGA module

with integrated 940 nm LED

• Temperature Range: –40 to +85°C

silabs.com | Smart. Connected. Energy-friendly. Rev. 0.9

Si1153 LGA Module Basic Application Pin Description 2.85x4.9 mm LGA Module

Si1153 DFN Basic Application Pin Description 2x2 mm DFN

Table 1.1. Recommended Operating Conditions

Parameter Symbol Condition Min Typ Max Unit

VDD Supply Voltage VDD 1.62 — 3.6 V

VDD OFF Supply Voltage VDD_OFF OFF mode –0.3 1.0 V

VDD Supply Ripple Voltage VDD = 3.3 V

1 kHz – 10 MHz

— — 50 mVpp

Operating Temperature T –40 25 85 °C

SCL, SDA, Input High Logic Volt-

age

I2CVIH VDD x 0.7 — VDD V

SCL, SDA Input Low Logic

Voltage

I2CVIL 0 — VDD x 0.3 V

Start-Up Time VDD above 1.62 V 25 — — ms

Table 1.2. Ordering Guide

Family DFN

OPNs

Package ALS 940 nm

Filter

Proximity

(# of LED Drivers)

# of LEDs Included

Si1153 Si1153-AA00-GMR 2 x 2 mm DFN Y 3 0

Si1153 Si1153-AA09-GMR 2 x 2 mm DFN Y 3 0

Si1153 Si1153-AA9x-GMR 2.85 x 4.9 mm LGA

Module

Y 3 1

Si1153 Data Short

silabs.com | Smart. Connected. Energy-friendly. Rev. 0.9 | 1

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