LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Description
The LTR-507ALS-01 is an integrated I2C digital light sensor [ALS] and proximity sensor [PS] with built-in LED driver, in a miniature chipled lead-free surface mount package. This device converts
light intensity to a digital output signal capable of direct I2C interface. It provides a linear response over a wide dynamic range and is well suited to applications under high ambient brightness.
With built-in proximity sensor, LTR-507ALS-01 offers the feature to detect object at a user configurable distance of typical 50cm Gray Card.
The device supports an interrupt feature that removes the need to poll the sensor for a reading which improves system efficiency. The device also supports several features that help to minimize the
occurrence of false triggering. This CMOS design and factory-set one time trimming capability ensure minimal device-to-device variations for ease of manufacturability to the end customers.
LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Features
• I2C interface (Standard mode@100kbit/s, Fast Mode@400kbit/s and High Speed Mode@3.4Mbit/s)
• Built-in temperature compensation circuit
• Programmable independent thresholds and interrupts
• Low active power consumption with shutdown mode
• Supply voltage range from 2.4V to 3.6V capable of 1.7 V logic voltage
• Operating temperaturerange from -40°C to +85°C
• RoHS and Halogen free compliant
• Light Sensor Features
- Close to human eye spectral response
- 4 Gain Range Selections
- Works under different light source conditions
- Automatically rejects 50/60Hz lightings flicker
• Proximity Sensor Features
- Built-in LED driver and detector
- Programmable LED drive settings
- 11-bit effective resolution
- High ambient light suppression
LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Application
To control display backlight and/or object detection in
• Mobile Devices: Mobile phone, PDA
• Computing Devices: Notebook PC, Desktop Monitor
• Consumer Devices: LCD/PDP TV backlight systems, Cameras, Personal Navigation Device, Digital Photo Frame
• Dashboard
LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Rating and Specification
Absolute Maximum Rating at Ta=25°C
Parameter |
Symbol |
Rating |
Unit |
Supply Voltage |
VDD |
4.5 |
V |
I2C Address Pin Voltage |
SEL |
-0.2 to 4.5 |
V |
I2C Bus Pin Voltage |
SCL, SDA |
-0.2 to 4.5 |
V |
I2C Bus Pin Current |
SCL, SDA |
10 |
mA |
Storage Temperature |
Tstg |
-40 to 100 |
°C |
Description |
Symbol |
Min. |
Typ. |
Max. |
Unit |
Supply Voltage |
VDD |
2.4 |
|
3.6 |
V |
LED Supply Voltage |
VLED |
2.5 |
|
4.35 |
V |
I2C Bus Pin Voltage |
Vbus |
1.7 |
|
3.6 |
V |
I2C Bus Input Pin High Voltage |
VIH_SCL, VIH _SDA |
1.3 |
|
|
V |
I2C Bus Input Pin Low Voltage |
VIL_SCL, VIL_SDA |
|
|
0.3 |
V |
Operating Temperature |
Tope |
-40 |
|
85 |
°C |
Parameter |
Min. |
Typ. |
Max. |
Unit |
Condition |
Active Supply Current |
|
|
220 |
uA |
Active Mode, Tope = 25°C |
Standby Current |
|
|
5 |
uA |
Standby / Sleep Mode |
Initial Startup Time |
100 |
|
|
ms |
(Note 1) |
Wakeup Time from Standb |
|
|
10 |
ms |
(Note 1) |