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.