1 Features
1• Long-Range Distance Measurement, Obstacle
Detection and Avoidance
• Flexibility to Customize Design With a Wide
Variety of Photodiodes and Emitters
• Sample Rate up to 4 kHz
• 16-Bit Distance Output at 15-m Unambiguous
Range
• De-Aliasing to Extend the Distance Range
• Supports 3 Transmitter Channels for Multi-Zone
Operation
• Excellent Ambient and Sunlight Rejection
• 200-nA Full-Scale Signal Current
• 88-dB Signal Phase Dynamic Range at 1 kHz
• Supports DC Ambient up to 200 μA, 60-dB
Rejection for Ambient at 1 kHz
• Distance Measurement Independent of Object
Reflectivity
• Adaptive HDR to Save Power and Increase the
Dynamic Range
• Configurable Event Detection and Interrupt Output
Mechanism
• I2C Interface for Control and Data
• Integrated Illumination Driver With Programmable
Current Control up to 173 mA
• Integrated Temperature Sensor for Calibration
• Single 3.3-V or 1.8-V and 3.3-V Supply Operation
• Operating Ambient Temperature: –40 to 85°C

2 Applications
• Precise Long-Range Distance Measurement
– Background Suppression and Accurate Object
Counting in High-Speed Conveyor Belt
Systems
– Precise Displacement Sensing in Factory
Automation
– Non-Contact Distance and/or Level
Measurement in Harsh Environments (High-
Temperature or Hazardous Conditions)
• Obstacle Detection and Avoidance
– Precise Distance Measurement for Drone
Landing and Navigation
– Cliff and Edge Detection in Vacuum Cleaners
(No False Triggers From Dark Carpets)
– Perimeter Scan in Automatic Guided Vehicle
Like Lawnmowers, Robots
– Obstruction Sensing in Applications Such as
Smoke Detectors, Emergency Exits

3 Description
The OPT3101 device is a high-speed, high-resolution
AFE for continuous-wave, time-of-flight based
proximity sensing and range finding. The device
integrates the complete depth processing pipeline
that includes the ADC, timing sequencer, and the
digital processing engine. The device also has a builtin
illumination driver that covers most of the target
applications.
Given the high ambient rejection ratio, the device can
support very high ambient conditions, including full
sunlight of 130 klx.
The timing sequencer is highly configurable to
provide for application-specific trade-offs of power
versus performance.
The device provides depth data that consists of
phase, amplitude, and ambient measurements. The
calibration subsystem supports phase-data calibration
for inaccuracies resulting from temperature and
crosstalk.