1 Features

? AEC-Q100 qualified for automotive applications:

– Temperature grade 2: –40°C to +105°C, TA

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? High-precision, high-speed light-to-digital

conversion over high-speed I2C interface

? Precision optical filtering closely matches human

eye with excellent near infrared (IR) rejection

? Semi-logarithmic output:

– Nine binary logarithmic full-scale light range

– Highly linear response within each range

? Built-in automatic full-scale light range selection

logic, which switches measurement range based

on input light condition for best possible resolution

at all times

? 28 bits of effective dynamic range:

– 400 μlux to 107 klux

? 12 configurable conversion times:

– 600 μs to 800 ms for high-speed and highprecision

applications

? External pin interrupt for hardware-synchronized

trigger and interrupts

? Error correction code features for improved

reliability in automotive use cases

? Internal FIFO for output registers with I2C burst

readout

? Low operating current: 30 μA

? Ultra-low power standby: 2 μA

? Operating temperature range: –40°C to +105°C

? Wide power-supply range: 1.6 V to 3.6 V

? 5.5-V tolerant I/O pins

? Selectable I2C address

? Small-form factor: 2 mm × 2 mm × 0.65 mm

2 Applications

? Automotive interior and exterior lighting

? Infotainment and cluster

? Electrochromatic and smart mirrors

? Wiper modules

? Head-up display systems

? Automotive camera systems

3 Description

The OPT4001-Q1 is a light-to-digital sensor (single

chip lux meter) that measures the intensity of visible

light. To measure accurate light intensity, a specially

engineered filter on the device tightly matches the

photopic response of the human eye and rejects the

near-infrared component from common light sources.

The output of OPT4001-Q1 is semi-logarithmic with

nine binary logarithmic full-scale light ranges along

with a highly linear response within each range,

bringing capability to measure from 400 μlux to 107

klux. This capability allows light sensor to have 28-bit

effective dynamic range. The built-in automatic range

selection logic dynamically adjusts the device gain

settings based on the light level, providing the best

possible resolution in all conditions without user input.