Automotive Digital Ambient Light Sensor (ALS) With High-Precision Human-Eye Response

Automotive Digital Ambient Light Sensor (ALS) With High-Precision Human-Eye Response - OPT3001-Q1


The OPT3001-Q1 device is an optical sensor that measures the intensity of visible light. The spectral response of the sensor tightly matches the photopic response of the human eye and includes significant infrared rejection.

The OPT3001-Q1 device is a single-chip lux meter, measuring the intensity of light as visible by the human eye. The precision spectral response and strong IR rejection of the device enables the OPT3001-Q1 device to accurately meter the intensity of light as seen by the human eye, regardless of light source. The strong IR rejection also aids in maintaining high accuracy when industrial design calls for mounting the sensor under dark glass for aesthetics. The OPT3001-Q1 device is designed for systems that create light-based experiences for humans, and an ideal preferred replacement for photodiodes, photoresistors, or other ambient light sensors with less human eye matching and IR rejection.

Measurements can be made from 0.01 lux up to 83k lux, without manually selecting full-scale ranges, by using the built-in, full-scale setting feature. This capability allows light measurement over a 23-bit effective dynamic range.

The digital operation is flexible for system integration. Measurements can be either continuous or single-shot. The control and interrupt system features autonomous operation, allowing the processor to sleep while the sensor searches for appropriate wake-up events to report through the interrupt pin. The digital output is reported over an I2C- and SMBus-compatible, two-wire serial interface.

The low-power consumption and low-power supply voltage capability of the OPT3001-Q1 device enhance the battery life of battery-powered systems.


  • AEC-Q100 Qualified for Automotive Devices
    • Device Temperature Grade 3: –40°C to 85°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4A
  • Precision Optical Filtering to Match Human Eye:
    • Rejects > 99% (Typical) of IR
  • Automatic Full-Scale Setting Feature Simplifies Software and Ensures Proper Configuration
  • Measurements: 0.01 Lux to 83k Lux
  • 23-Bit Effective Dynamic Range With
    Automatic Gain Ranging
  • 12 Binary-Weighted Full-Scale Range Settings:
    < 0.2% (Typical) Matching Between Ranges
  • Low Operating Current: 1.8 µA (Typical)
  • Operating Temperature Range: –40°C to 85°C
  • Functional Temperature Range: –40°C to 105°C
  • Wide Power-Supply Range: 1.6 V to 3.6 V
  • 5.5-V Tolerant I/O
  • Flexible Interrupt System
  • Small-Form Factor: 2 mm × 2 mm × 0.65 mm

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Parametrics Compare all products in Light Sensors

Input Type
Spectral Highlights (none)
Peak Spectral Sensitivity (nm)
Spectral Bandwidth (nm)
Supply Range (Nom)
Interrupt Outputs (Count)
Quiescent Current (Max) (uA)
Signal Bandwidth (none)
Operating Temperature Range (C)
Package Size: mm2:W x L (PKG)
OPT3001-Q1 OPT3001 OPT3002 OPT3006
Light    Light    Light    Light   
I2C    I2C    I2C    I2C   
Human Eye Response    Human Eye Response    Wide Band    Human Eye Response   
550    550    505    550   
460nm - 655nm    460nm - 655nm    300 - 1000    460nm - 655nm   
1.6V to 3.6V    1.6V to 3.6V    1.6V - 3.6V    1.6V to 3.6V   
YES    YES    YES    YES   
  2    2    2   
10 samples /sec    10 samples /sec    10 samples/sec    10 samples/sec   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
6USON: 4 mm2: 2 x 2(USON)    6USON: 4 mm2: 2 x 2(USON)    6USON: 4 mm2: 2 x 2(USON)    6PICOSTAR: 1 mm2: .846 x .946(PICOSTAR)   

Other qualified versions of OPT3001-Q1

Version Part Number Definition
Catalog OPT3001 TI's standard catalog product