Si1153 Data Short

Si1153 Data Short
Proximity/Ambient Light Sensor IC with I2C Interface
KEY FEATURES
The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detector 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 excellent 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 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 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 integrated LED, and is capable of operation from 1.62 to 3.6 V over the –40 to +85 °C temperature range.
Applications:
• Wearables
• Handsets
• Display backlighting control
• Consumer electronics
VDD
• On die 940 bandpass filter that rejects
unwanted visible light and IR from
daylight and other sources (Si1153AA09/AA9X).
• 9 μA average current (LED pulsed 25.6
μs every 800 ms at 180 μA plus 3 mA
Si1153 supply).
Internal Osc.
Regulator
• <500 nA standby current.
.
.
MUX
940 nm Bandpass
Filter.
• Operates in direct sunlight with optional
on-die 940 nm passband filter.
• Industry’s lowest power consumption
• 1.62 to 3.6 V supply voltage.
ADC1
LED1
ADC2
Signal
Processor
and
Control
LED
Drivers
LED2 *
LED3 **
• 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.
INT
SCL
AD
• Up to three independent LED drivers.
• 30 current settings from 5.6 mA to 360
mA for each LED driver.
• Up to 128 klx dynamic range possible
across two ADC range settings.
(Filter Only in
AA09 & AA9X
versions)
SDA
• From under 1 cm to 200 cm with
additional lensing (e.g. 5 mm
hemispherical lens as in our EVB).
• Ambient light sensor
• <100 mlx resolution possible, allowing
operation under dark glass.
ALS Photodiodes
LIGHT
• Proximity detector
• From under 1 cm to 50 cm without
additional lensing.
I2C
Engine
• Slave mode hardware address decoding.
I2C addr sel
* 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
silabs.com | Smart. Connected. Energy-friendly.
• 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
Rev. 0.9
Si1153 Data Short
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
VDD Supply Voltage
Condition
VDD
VDD OFF Supply Voltage
VDD_OFF
Min
Typ
Max
Unit
1.62
—
3.6
V
1.0
V
50
mVpp
OFF mode
–0.3
VDD = 3.3 V
—
—
T
–40
25
85
°C
SCL, SDA, Input High Logic Voltage
I2CVIH
VDD x 0.7
—
VDD
V
SCL, SDA Input Low Logic
I2CVIL
0
—
VDD x 0.3
V
25
—
—
ms
VDD Supply Ripple Voltage
1 kHz – 10 MHz
Operating Temperature
Voltage
Start-Up Time
VDD above 1.62 V
Table 1.2. Ordering Guide
Family
DFN
Package
ALS
OPNs
Si1153
Si1153-AA00-GMR
2 x 2 mm DFN
Si1153
Si1153-AA09-GMR
2 x 2 mm DFN
Si1153
Si1153-AA9x-GMR
2.85 x 4.9 mm LGA
Module
silabs.com | Smart. Connected. Energy-friendly.
940 nm
Proximity
Filter
(# of LED Drivers)
Y
# of LEDs Included
3
0
Y
3
0
Y
3
1
Rev. 0.9 | 1
Smart.
Connected.
Energy-Friendly
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Support and Community
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