1 Features
1• 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

2 Applications
• Intrusion and Door-Open Detection Systems
• System Wake-Up Circuits
• Medical and Scientific Instrumentation
• Display Backlight Controls
• Lighting Control Systems
• Tablet and Notebook Computers
• Thermostats and Home Automation Appliances
• Outdoor Traffic and Street Lights

3 Description
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 SMBuscompatible,
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.