1 Features
• Precision optical filtering to match human eye:
– Rejects 99.99+% (4+ orders) of Near Infrared
(NIR) light over a large angle of incidence
• Built-in automatic full-scale light range selection
logic, which switches measurement range based
on input light condition with excellent gain
matching between ranges
• Measurements: 20 mlux to 167 klux
• 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
• Wide power-supply range: 1.6 V to 3.6 V
• 5.5-V Tolerant I/O
• Flexible interrupt system
• Small-form factor:
– 2.1 mm × 1.9 mm × 0.6 mm for SOT-5X3
package

2 Applications
• IP Network cameras
• Security Camera
• Video door bell
• Applications requiring light sensing along with
850nm or 940nm active NIR illumination

3 Description
The OPT3005 is a sensor that measures the intensity
of visible light. The spectral response of the sensor
tightly matches the photopic response of the human
eye along with extreme rejection to 850nm and
940nm infrared light over a wide angle of incidence.
The OPT3005 is a single-chip lux meter, measuring
the intensity of light as visible by the human eye. The
precision spectral response and extreme IR rejection
of the device enables the OPT3005 to accurately
meter the intensity of light as seen by the human eye
regardless of light source and any stray light from
850nm or 940nm active illumination. The extreme IR
rejection also helps to maintain high accuracy when
industrial design calls for mounting the sensor under
dark glass, especially with active 850nm or 940nm
NIR illumination. Such systems typically have a lot of
NIR stray reflections from the cover glass which can
affect the light sensor measurement. The precision
optical filtering of OPT3005 is verified for resilience
to such stray NIR refection and truly measures
the ambient light as perceived by human eye. The
OPT3005 is designed for systems that create lightbased
experiences for humans, and is a preferred
replacement for photodiodes, photoresistors, or other
ambient light sensors with less human eye matching
and IR rejection.
Measurements can be made from 20mlux up to
166klux 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.