Ambient light sensor OPT3001

visibledigitalintegrated circuit

Overview
The OPT3001 is a digital ambient light sensor (ALS) that measures visible light intensity with a spectral response matched to the human eye and strong infrared (IR) rejection. It is a single-chip lux meter designed for accurate perceptual light metering and reliable operation when mounted under dark glass.

Key capabilities

• Precision spectral response matching the human eye with >99% IR rejection
• Automatic full-scale setting for simplified software and correct configuration
• Measurement range: 0.01 lux to 83,000 lux
• 23-bit effective dynamic range with automatic gain ranging
• 12 binary-weighted full-scale range settings with <0.2% (typ) matching between ranges
• Low operating current: 1.8 µA (typ)
• Wide supply range: 1.6 V to 3.6 V
• 5.5-V tolerant I/O
• Flexible interrupt system; supports continuous or single-shot measurements and autonomous wake-up events
• Digital output via I2C-/SMBus-compatible two-wire serial interface
• Small package: 2.0 mm × 2.0 mm × 0.65 mm

Applications
Designed for systems that create light-based experiences for people: display auto-brightness control, environmental light sensing, architectural or industrial lighting management, and battery-powered devices. Suitable as a replacement for photodiodes or photoresistors when human-eye matching and IR rejection are required.

Notes on measurement
The built-in full-scale setting enables measurement from 0.01 lux up to 83,000 lux without manual range selection, providing a 23-bit effective dynamic range. Strong IR rejection maintains accuracy across different light sources and when the sensor is mounted behind dark glass or covers.

Parameters / Quick specs
Rating | Catalog
Applications | Enterprise, PC
Operating temperature range (°C) | -40 to 85

Package / Pins / Size
Package | USON (DNP)
Pins | 6
Size | 4 mm² (2 x 2)

Technical specifications

• Spectral response optimized to photopic (human eye) response with >99% IR rejection (typ)
• Measurement range: 0.01 lux to 83,000 lux
• 23-bit effective dynamic range with automatic gain ranging
• 12 full-scale range settings with <0.2% typical matching between ranges
• Low operating current: 1.8 µA (typ)
• Operating temperature: -40°C to +85°C
• Supply voltage: 1.6 V to 3.6 V
• I/O tolerant to 5.5 V
• I2C-/SMBus-compatible two-wire digital interface
• Flexible interrupt/control for autonomous low-power operation
• Package: USON (DNP), 6 pins, 2.0 mm × 2.0 mm × 0.65 mm

Documentation & resources
Datasheet, evaluation module (OPT3001EVM) materials, application notes and user guides are available to support integration and evaluation.