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Integrated Low Voltage I2C Ambient Light Sensor
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Price
Price on request ≥1piece
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Model Number
LTR-308ALS-01 -
Data Sheet
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Package
Original packaging -
Specs
LTR-308ALS-01 -
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Product Description
LTR-308ALS-01 Ambient Light Sensor Description
The LTR-308ALS-01 is an integrated low voltage I2C ambient light sensor (ALS) in a single 2x2mm miniature chipled lead-free surface mount package.
The ALS provides a linear response over a wide dynamic range, which is well suited to applications under very low or bright ambient brightness.
The sensor has a programmable interrupt with hysteresis to response to events and that removes the need to poll the sensor for a reading which improves system efficiency. This CMOS design and factory-set one time trimming capability ensure minimal sensor-to-sensor variations for ease of manufacturability to the end customers.
LTR-308ALS-01 Ambient Light Sensor Application
Control brightness of display panel in mobile, computing, and consumer devices.
LTR-308ALS-01 Ambient Light Sensor Features
• I2C interface (Standard mode @100kHz or Fast mode @400kHz)
• Ambient Light in ultra-small chipled package
• Very low power consumption with sleep mode capability
• Operating voltage ranges: 1.7V to 3.6V
• Operating temperature ranges: -40 to +85°C
• Built-in temperature compensation circuit
• Programmable interrupt function for ALS with upper and lower thresholds
• RoHS and Halogen free compliant
• ALS Features
- 16 to 20 bits effective resolution
- Wide dynamic range (0.01 to 157K lux) with linear response
- Close to human eye spectral response
- Automatic rejection for 50Hz/60Hz lighting flicker
LTR-308ALS-01 Ambient Light Sensor Rating and Specification
Absolute Maximum Rating at Ta=25°C
Note: Exceeding these ratings could cause damage to the sensor. All voltages are with respect to ground. Currents are positive into, negative out of the specified terminal.
Recommended Operating Conditions
Electrical Specifications (VDD = 1.8V, Ta=25°C, unless otherwise noted)
Characteristics Ambient Light
The LTR-308ALS-01 is an integrated low voltage I2C ambient light sensor (ALS) in a single 2x2mm miniature chipled lead-free surface mount package.
The ALS provides a linear response over a wide dynamic range, which is well suited to applications under very low or bright ambient brightness.
The sensor has a programmable interrupt with hysteresis to response to events and that removes the need to poll the sensor for a reading which improves system efficiency. This CMOS design and factory-set one time trimming capability ensure minimal sensor-to-sensor variations for ease of manufacturability to the end customers.
LTR-308ALS-01 Ambient Light Sensor Application
Control brightness of display panel in mobile, computing, and consumer devices.
LTR-308ALS-01 Ambient Light Sensor Features
• I2C interface (Standard mode @100kHz or Fast mode @400kHz)
• Ambient Light in ultra-small chipled package
• Very low power consumption with sleep mode capability
• Operating voltage ranges: 1.7V to 3.6V
• Operating temperature ranges: -40 to +85°C
• Built-in temperature compensation circuit
• Programmable interrupt function for ALS with upper and lower thresholds
• RoHS and Halogen free compliant
• ALS Features
- 16 to 20 bits effective resolution
- Wide dynamic range (0.01 to 157K lux) with linear response
- Close to human eye spectral response
- Automatic rejection for 50Hz/60Hz lighting flicker
LTR-308ALS-01 Ambient Light Sensor Rating and Specification
Absolute Maximum Rating at Ta=25°C
|
Parameter |
Symbol |
Min. |
Max. |
Unit |
|
Supply Voltage |
VDD |
|
4.0 |
V |
|
Digital Voltage Range |
SCL, SDA, INT |
-0.5 |
4.0 |
V |
|
Storage Temperature |
Tstg |
-40 |
100 |
°C |
|
Electrostatic Discharge Protection (Human Body Model JESD22-A114) |
VHBM |
|
2000 | V |
Recommended Operating Conditions
|
Description |
Symbol |
Min. |
Typ. |
Max. |
Unit |
|
Supply Voltage |
VDD |
1.7 |
|
3.6 |
V |
|
Interface signal input high |
VI2Chigh |
1.5 |
|
VDD |
V |
|
Interface signal input low |
VI2Clow |
0 |
|
0.4 |
V |
|
Operating Temperature |
Tope |
-40 |
|
85 |
°C |
Electrical Specifications (VDD = 1.8V, Ta=25°C, unless otherwise noted)
|
Parameter |
Min. |
Typ. |
Max. |
Unit |
Condition |
|
Active Supply Current |
|
110 |
|
uA |
Max. duty cycle, Vdd=1.8V, Gain 3x |
|
andby Current |
|
1 |
|
uA |
Shutdown Mode |
|
Wakeup Time from Standby |
|
5 | 10 | ms |
From Standby to Active mode where measurement can start |
Characteristics Ambient Light
|
Parameter |
Min. |
Typ. |
Max. |
Unit |
Condition |
|
ALS Resolution |
16 |
|
20 |
Bit |
Programmable for 16, 17, 18, 19, 20 Bit |
|
ALS Lux accuracy |
-10 |
|
10 | % |
White LED, 5000K, Ta = 25°C |
|
Dark Level Count |
|
0 | 5 |
Count |
0 Lux, 18-bit resolution |
|
Integration time |
50 |
|
400 | ms |
With 50/60Hz Rejection |
|
50/60 Hz flicker noise error |
-5 |
|
+5 | % |
|