si1141 Silicon Laboratories, si1141 Datasheet
si1141
Manufacturer Part Number
si1141
Description
Proximity/ambient Light Sensor With I 2c Interface
Manufacturer
Silicon Laboratories
Datasheet
1.SI1141.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
si1141-A10-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Company:
Part Number:
si1141-A11-GMR
Manufacturer:
SILICON
Quantity:
2 000
Part Number:
si1141-A11-GMR
Manufacturer:
SILICONLA
Quantity:
20 000
Company:
Part Number:
si1141-A80-GMR
Manufacturer:
SILICONLAB
Quantity:
271
Description
The Si1141 is a low-power, reflectance-based
infrared proximity and ambient light sensor with I
digital
interrupt output. This device includes an integrated
high-sensitivity photodiode, digital converter, digital
signal processor, and one integrated infrared LED
driver with selectable drive levels. The Si1141 offers
excellent performance under a wide dynamic range
of light sources including direct sunlight. The
photodiode
conversion circuitry provide excellent immunity to
artificial light flicker noise. The single LED driver
device is capable of supporting proximity motion
detection.
autonomous modes of operation.
The device is provided in an 10-lead 2x2 mm QFN
package and is capable of operation from 1.8 to
3.6 V over the –40 to +85 °C temperature range.
Applications
- Handsets
- eReaders
- Notebooks/netbooks/tablet PCs
- Portable consumer electronics
- Audio products
- Security panels
- Tamper detection circuits
- Dispensers
- Valve controls
- Smoke detectors
- Touchless switches
- Occupancy sensors
- Consumer electronics
- Industrial automation
- Display backlighting control
- Photo-interrupter
Human Interface Products
interface
The
response
SDA
SCL
V
INT
DD
Si1141
and
Regulator
Temp
I
and
Infrared
Visible
2
C
programmable-threshold
supports
associated
Proximity/Ambient Light Sensor with I
Copyright © 2010 by Silicon Laboratories
M
U
A
X
Register Map
slave
ADC
Digital Sequencer & Control Logic
digital
and
2
C
Features
QuickSense™ Integrated Infrared Proximity Detector
-
-
-
-
-
-
-
-
QuickSense™ Integrated Ambient Light Sensor
-
-
-
-
-
Industry's Lowest Power Consumption
-
-
-
-
-
-
Serial Communications
-
-
Small-outline 10-Lead 2x2 mm QFN Package
Temperature Range: –40 to +85 °C
Filter
One independent LED driver
Fifteen current settings from 6 mA to 416 mA for each LED
driver
25.6 µs LED driver pulse width
500 mm proximity range with single pulse (<2.5 kLx)
150 mm proximity range with single pulse (>2.5 kLx)
Operates at up to 128 klux (direct sunlight)
Minimum reflectance sensitivity
< 1 µW/cm
High EMI immunity without shielded packaging
10 mlx resolution possible, allowing operation under dark glass
1 to 128 klx dynamic range possible across two ADC range set-
tings
17-bit resolution
Accurate lux measurements possible with IR correction algo-
rithm
25.6 µs measurement cycle keeps total power consumption
duty cycle low without compromising performance or noise
immunity
1.8 to 3.6 V supply voltage
9.7 µA average dc current draw
Assuming single PS channel, ALS Visible + ALS IR every
800 ms,
3 µA average current for sensors and internal circuitry, and
6.7 µA average current for external LED (assuming 209 mA for
25.6 µs every 800 ms)
< 20 nA powered down current
< 500 nA standby current
Internal and external wake support
Built-in voltage supply monitor and power-on reset controller
SMBus (I
Slave mode hardware address recognition
2
C compatible) up to 3.4 Mbps data rate
2
Oscillator
Drivers
LED
GND
LED1
CV
CV
NC
DNC
DD
DD
2
C Interface
Si1141
11.19.10
Related parts for si1141
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
SI N CHANNEL JUNCTION
Manufacturer:
Panasonic Semiconductor
Datasheet:
Part Number:
Description:
SI N CHANNEL JUCTION
Manufacturer:
Panasonic Semiconductor
Datasheet:
Part Number:
Description:
SI N-CHANNEL JUNCTION
Manufacturer:
Panasonic Semiconductor
Datasheet:
Part Number:
Description:
Si N-Channel Junction
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
(SI Series) SNAP-IN MOUNT ALUMINUM ELECTROLYTIC
Manufacturer:
NTE Electronics
Datasheet:
Part Number:
Description:
(SI-3100C Series) 5-Terminal / Multi-Function / Full-Mold / Low Dropout Voltage Dropper Type
Manufacturer:
Allegro Microsystems
Datasheet:
Part Number:
Description:
(SI-3100 Series) 3-Terminal / Full-Mold / Low Dropout Voltage Dropper Type
Manufacturer:
Allegro Microsystems
Datasheet:
Part Number:
Description:
SI N CHANNEL JUNCTION
Manufacturer:
PANASONIC [Panasonic Semiconductor]
Datasheet:
Part Number:
Description:
SMD/C/SINGLE-ENDED OUTPUT SILICON OSCILLATOR
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 AES KEYFOB DEMO WITH LCD RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 SIMPLIFIED KEY FOB DEMO WITH LED RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A/-40 TO 85 OC/EZLINK MODULE; F930/4432 HIGH BAND (REV E/B1)
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
EZLink Module; F930/4432 Low Band (rev e/B1)
Manufacturer:
Silicon Laboratories Inc
si1141 Summary of contents
Page 1
... This device includes an integrated high-sensitivity photodiode, digital converter, digital signal processor, and one integrated infrared LED driver with selectable drive levels. The Si1141 offers excellent performance under a wide dynamic range of light sources including direct sunlight. The photodiode response ...
Page 2
... QFN Package Symbol Min A 0. 0.30 aaa bbb ccc ddd Product Family LED Drivers Range[<2.5 klx] 1 500 mm Copyright © 2010 by Silicon Laboratories Si1141 2 C Interface Typ Max Units 3.3 3 °C — 128 klx — 500 nA 2 0.1 1 µW/cm — ...