OPT3005中文资料德州仪器数据手册PDF规格书

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.