LTR-553ALS-01 Optical Sensor
The LTR-553ALS-01 is an integrated low voltage I2C digital light sensor (ALS) and proximity sensor (PS) with a built-in emitter, all within a miniature chipled lead-free surface mount package. This sensor converts light intensity into a digital output signal, enabling direct I2C interface. It offers a linear response across a wide dynamic range from 0.01 lux to 64k lux, making it suitable for applications with high ambient brightness. The integrated proximity sensor, including an emitter and detector, allows for user-configurable object detection distances. The sensor supports an interrupt feature to enhance system efficiency by eliminating the need for constant polling. Additionally, it includes features to minimize false triggering. Its CMOS design and factory-set trimming ensure minimal sensor-to-sensor variations, simplifying manufacturing for end customers.
Product Attributes
- Brand: LITE-ON Technology Corp.
- Origin: Taiwan, R.O.C.
- Certifications: RoHS and Halogen free compliant
Applications
- 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
Technical Specifications
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|---|
| Absolute Maximum Ratings | ||||||
| Supply Voltage | VDD | 3.8 | V | at Ta = 25C | ||
| Digital Voltage Range | SCL, SDA, INT | -0.5 | 3.8 | V | ||
| Digital Output Current | SCL, SDA, INT | -1 | 20 | mA | ||
| Storage Temperature | Tstg | -40 | 100 | C | ||
| Recommended Operating Conditions | ||||||
| Supply Voltage | VDD | 2.4 | 3.6 | V | ||
| LED Supply Voltage | VLED | 2.5 | 4.35 | V | ||
| Interface Bus Power Supply Voltage | VIO | 1.7 | 3.6 | V | ||
| Operating Temperature | Tope | -30 | 70 | C | ||
| Electrical & Optical Specifications | ||||||
| Active Supply Current | 250 | uA | Active Mode, Tope = 25C | |||
| Standby Current | 5 | uA | Standby / Sleep Mode | |||
| Initial Startup Time | 60 | 100 | 1000 | ms | (Note 1) | |
| Wakeup Time from Standby | 10 | ms | (Note 1) | |||
| Light Sensor | ||||||
| Full Scale ADC Count | 65535 | count | ||||
| Dark ADC Count | 0 | 6 | count | Ch0, Lux = 0 | ||
| Dark ADC Count | 0 | 6 | count | Ch1, Lux = 0 | ||
| ADC Count (Gain=8) | 520 | 1070 | count | Ch0 White LED 200 Lux, Integration Time : 50ms, Measurement Time : 100ms | ||
| ADC Count (Gain=8) | 180 | 390 | count | Ch1 White LED 200 Lux, Integration Time : 50ms, Measurement Time : 100ms | ||
| ALS Ratio | 0.15 | 0.26 | 0.35 | Ratio | Ratio = Ch1/(Ch1 + Ch0), Lux = 200 (White LED) | |
| Proximity Sensor | ||||||
| Full Scale ADC Count | 2047 | count | ||||
| Peak Sensitivity | 840 | 855 | 870 | nm | ||
| Detection Distance | 100 | nm | 100mA, 4 pulses, 18% Gray card | |||
| Ambient Light Suppression | 50k | Lux | Direct sunlight | |||
| LED Pulse Count | 1 | 15 | Pulses | |||
| LED Pulse Frequency | 30k | 100k | Hz | Increment of 10k Hz | ||
| LED Duty Cycle | 25 | 100 | % | Increment of 25% | ||
| LED Peak Current | 5 | 100 | mA | LED Peak Current = 000 to 011 | ||
| Optical Rise / Fall Time | 100 | ns | ||||
| AC Electrical Characteristics | ||||||
| SCL clock frequency | SCL f | 1 | 400 | kHz | ||
| Bus free time between a STOP and START condition | BUF t | 1.3 | us | |||
| Hold time (repeated) START condition. After this period, the first clock pulse is generated | STA HD t | 0.6 | us | |||
| LOW period of the SCL clock | LOW t | 1.3 | us | |||
| HIGH period of the SCL clock | HIGH t | 0.6 | us | |||
| Set-up time for a repeated START condition | STA SU t | 0.6 | us | |||
| Set-up time for STOP condition | STO SU t | 0.6 | us | |||
| Rise time of both SDA and SCL signals | rt | 30 | 300 | ns | ||
| Fall time of both SDA and SCL signals | ft | 30 | 300 | ns | ||
| Data hold time | DAT HD t | 0.3 | 0.9 | us | ||
| Data setup time | DAT SU t | 100 | ns | |||
| Pulse width of spikes which must be suppressed by the input filter | SP t | 0 | 50 | ns | ||
2410121549_LITEON-LTR-553ALS-01_C492375.pdf
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