OPT3002 Light-to-digital sensor | TI.com

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Light-to-digital sensor

Light-to-digital sensor - OPT3002

Recommended alternative parts

  • OPT3001  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   It includes human-eye response.


The OPT3002 light-to-digital sensor provides the functionality of an optical power meter within a single device. This optical sensor greatly improves system performance over photodiodes and photoresistors. The OPT3002 has a wide spectral bandwidth, ranging from 300 nm to 1000 nm. Measurements can be made from 1.2 nW/cm2 up to 10 mW/cm2, without the need to manually select the 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 results are compensated for dark-current effects, as well as other temperature variations.

Use the OPT3002 in optical spectral systems that require detection of a variety of wavelengths, such as optically-based diagnostic systems. The interrupt pin system can summarize the result of the measurement with one digital pin. Power consumption is very low, allowing the OPT3002 to be used as a low-power, battery-operated, wake-up sensor when an enclosed system is opened.

The OPT3002 is fully integrated and provides optical power reading directly from the I2C- and SMBus-compatible, two-wire, serial interface. Measurements are either continuous or single-shot. The OPT3002 fully-operational power consumption is as low as 0.8 µW at 0.8 SPS on a 1.8-V supply.



  • Wide Optical Spectrum: 300 nm to 1000 nm
  • Automatic Full-Scale Setting Feature Simplifies Software and Configuration
  • Measurement Levels:
    • 1.2 nW/cm2 to 10 mW/cm2
  • 23-Bit Effective Dynamic Range With
    Automatic Gain Ranging
  • 12 Binary-Weighted, Full-Scale Range Settings:
    < 0.2% (typ) Matching Between Ranges
  • Low Operating Current: 1.8 µA (typ)
  • Operating Temperature: –40°C to +85°C
  • Wide Power-Supply: 1.6 V to 3.6 V
  • 5.5-V Tolerant I/O
  • Flexible Interrupt System
  • Small Form Factor: 2.0 mm × 2.0 mm × 0.65 mm

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Part number Order Interface Supply range (Nom) Quiescent current (Max) (uA) Package size: mm2:W x L (PKG) Approx. price (US$) Rating Operating temperature range (C) Package Group Input type
OPT3002 Order now I2C     1.6V - 3.6V     2     6USON: 4 mm2: 2 x 2 (USON | 6)     0.53 | 1ku     Catalog     -40 to 85     USON | 6     Light    
OPT3001 Order now I2C     1.6V to 3.6V     2     6USON: 4 mm2: 2 x 2 (USON | 6)     0.87 | 1ku     Catalog     -40 to 85     USON | 6     Light    
OPT3001-Q1 Order now I2C     1.6V to 3.6V       6USON: 4 mm2: 2 x 2 (USON | 6)     0.96 | 1ku     Automotive     -40 to 105
-40 to 85    
USON | 6     Light    
OPT3004 Order now I2C     1.6V to 3.6V     2     6USON: 4 mm2: 2 x 2 (USON | 6)     0.85 | 1ku     Catalog     -40 to 85     USON | 6     Light    
OPT3006 Order now I2C     1.6V to 3.6V     2     6PICOSTAR: 1 mm2: .846 x .946 (PICOSTAR | 6)     0.59 | 1ku     Catalog     -40 to 85     PICOSTAR | 6     Light    
OPT3007 Order now I2C     1.6V to 3.6V     2     6PICOSTAR: 1 mm2: .846 x .946 (PICOSTAR | 6)     0.57 | 1ku     Catalog     -40 to 85     PICOSTAR | 6     Light