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1、 Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 1 of 42 LTR-501ALS-01 2-in-1 Digital Light Sensor and Proximity Sensor Technical Data Sheet SPEC NO: CREATED: 18 thJanuary 2012 REV. NO: 1.0 Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 2 of 42 Revision Table Ver
2、sion Change Description Issue Date 1.0 As created 18-Jan-12 Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 3 of 42 1. Description The LTR-501ALS-01 is an integrated I2C digital light sensor ALS and proximity sensor PS with built-in LED driver, in a miniature chipled lead-free surf
3、ace mount package. This device converts light intensity to a digital output signal capable of direct I 2 C interface. It provides a linear response over a wide dynamic range from 0.01 lux to 64k lux and is well suited to applications under high ambient brightness. With built-in proximity sensor, LTR
4、-501ALS-01 offers the feature to detect object at a user configurable distance up to 10cm. 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
5、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. 2. Features I 2 C interface (Fast Mode 400kbit/s) Ultra-small ChipLED package Built-in temperature compensation circuit Lo
6、w active power consumption with standby mode Supply voltage range from 2.4V to 3.6V capable of 1.7V logic voltage Operating temperature range from -30 C to +70 C RoHS and Halogen free compliant Light Sensor Close to human eye spectral response Immunity to IR / UV Light Source Automatically rejects 5
7、0 / 60 Hz lightings flicker Full dynamic range from 2 lux to 64k lux High resolution range from 0.01 lux to 320 lux 16-bit effective resolution Proximity Sensor Built-in LED driver, emitter and detector Programmable LED drive settings 11-bit effective resolution High ambient light suppression Proper
8、ty of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 4 of 42 3. Applications 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 D
9、evice, Digital Photo Frame Dashboard 4. Ordering Information Part Number Packaging Type Package Quantity LTR-501ALS-01 Tape and Reel 8-pin chipled package 2500 Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 5 of 42 5. Outline Dimensions Notes: 1. All dimensions are in millimeters
10、2. Tolerances: 0.2mm 3. LTC reserves the right to change the drawing till final datasheet release Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 6 of 42 6. Functional Block Diagram 7. Application Circuit Property of Lite-On Only Part No.: LTR-501ALS-01 DATA SHEET Page: 7 of 42 I/O
11、 Pins Configuration Table Pin I/O Type Symbol Description 1 VDD Supply Voltage 2 GND Ground 3 NC No Connect 4 NC No Connect 5 I LDR To connect to LED Cathode. 6 O INT* Level Interrupt pin. Active LOW for interrupt. This pin is an open drain. 7 I SCL* I 2 C serial clock 8 I/O SDA* I 2 C serial data *Note: For noisy environment, add 10pF capacitor from signal to GND for additional noise filtering. Recommended Application Circuit Components Component Recommended Value Condition Rp1, Rp2, Rp3 1 1 kW to 10 kW C1 0.1uF C2 4.7uF 1 Selection of pull-up r
