Si1153 Data Short
Proximity/Ambient Light Sensor IC with I
2
C Interface
The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detec-
tor with I
2
C 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
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.
VDD
Regulator
ALS Photodiodes
940 nm Bandpass
Filter.
Internal Osc.
• 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.
• I
2
C Serial communications
• Up to 3.4 Mbps data rate.
LIGHT
ADC1
ADC2
Signal
Processor
and
Control
LED
Drivers
MUX
.
.
LED1
LED2 *
LED3 **
(Filter Only in
AA09 & AA9X
versions)
INT
SCL
SDA
AD
I2C
Engine
I2C addr sel
• 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
* Pull up to VDD with 47 kOhm resistor to select primary I2C address (0x53),
or down to GND for alt I2C address 0x52.
** Pull up to VDD with 47 kOhm resistor
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Disclaimer
Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers
using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific
device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories
reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy
or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply
or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific
written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected
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