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.