Overview
The OPT3101RHFR is a high-speed, high-resolution analog front end (AFE) designed for continuous-wave, time-of-flight (ToF) based proximity sensing and range finding. Manufactured by Texas Instruments, this device integrates the complete depth processing pipeline, including the ADC, timing sequencer, and digital processing engine. It features a built-in illumination driver and supports a wide range of photodiodes and emitters, making it highly versatile for various applications. The OPT3101RHFR operates over an ambient temperature range of -40°C to 85°C and is packaged in a 28-pin VQFN (RHF) package.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VQFN (RHF) - 28 pins |
| Operating Temperature Range | -40°C to 85°C |
| Sample Rate | Up to 4 kHz |
| Distance Output | 16-Bit at 15-m Unambiguous Range |
| Signal Phase Dynamic Range | 88 dB at 1 kHz |
| Ambient Rejection | Up to 200 µA, 60-dB Rejection at 1 kHz |
| Supply Voltage | Single 3.3-V or 1.8-V and 3.3-V |
| Illumination Driver Current Control | Up to 173 mA |
| Interface | I2C for Control and Data |
Key Features
- 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
- Distance Measurement Independent of Object Reflectivity
- Adaptive HDR to Save Power and Increase the Dynamic Range
- Configurable Event Detection and Interrupt Output Mechanism
- Integrated Illumination Driver With Programmable Current Control up to 173 mA
- Integrated Temperature Sensor for Calibration
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 Vehicles Like Lawnmowers, Robots
- Obstruction Sensing in Applications Such as Smoke Detectors, Emergency Exits
Q & A
- What is the OPT3101RHFR used for?
The OPT3101RHFR is used for continuous-wave, time-of-flight (ToF) based proximity sensing and range finding.
- What is the operating temperature range of the OPT3101RHFR?
The operating temperature range is -40°C to 85°C.
- What is the maximum sample rate of the OPT3101RHFR?
The maximum sample rate is up to 4 kHz.
- How many transmitter channels does the OPT3101RHFR support?
The device supports 3 transmitter channels for multi-zone operation.
- What is the dynamic range of the signal phase?
The signal phase dynamic range is 88 dB at 1 kHz.
- Does the OPT3101RHFR have built-in ambient rejection?
Yes, it supports DC ambient up to 200 µA with 60-dB rejection at 1 kHz.
- What interface does the OPT3101RHFR use for control and data?
The device uses an I2C interface for control and data.
- Can the OPT3101RHFR measure distance independently of object reflectivity?
Yes, the device can measure distance independently of object reflectivity.
- Does the OPT3101RHFR have an integrated temperature sensor?
Yes, it has an integrated temperature sensor for calibration.
- What is the maximum current control for the illumination driver?
The maximum current control for the illumination driver is up to 173 mA.
