OPT3101RHFR

Analog Front End (AFE) Overview

The OPT3101RHFR is a Time-of-Flight (ToF) based long-range proximity and distance sensor analog front-end (AFE) manufactured by Texas Instruments. It utilizes continuous wave phase-shift ToF technology to measure distances ranging from 30 cm to 5 m with high resolution. The device integrates a complete depth processing pipeline, including an ADC, timing sequencer, and digital processing engine. Key electrical specifications include a supply voltage range of 1.7 VDC to 3.6 VDC and an operating temperature range of -40°C to +85°C. It supports sampling rates up to 4000 fps and features I2C interface for control and data transfer.

Analog Front End (AFE) Feature Summary

• Integrated illumination drivers with programmable current control up to 173 mA
• High environmental and sunlight suppression performance with AC coupling design
• Supports three transmitter channels for multi-zone operation
• Includes integrated temperature sensor for calibration

Analog Front End (AFE) Applications

• Obstacle detection and avoidance for drones and autonomous vehicles
• Precise long-range distance measurement in factory automation
• Non-contact distance or level measurement in harsh environments

Analog Front End (AFE) Procurement Notes

Verify the specific suffix RHFR indicates the reel packaging format when ordering. Confirm that the 28-VQFN package dimensions align with the PCB footprint requirements. Ensure the power supply rails meet the 1.7 V to 3.6 V specification for both analog and digital domains. Check for moisture sensitivity level requirements during storage and handling prior to reflow soldering.

Analog Front End (AFE) Selection Notes

Select this component for applications requiring robust sunlight rejection and long-range proximity sensing without complex external signal conditioning. The integrated LED drivers simplify the design by reducing the need for external driver circuits. Consider the 28-VQFN package size if space constraints are critical. Verify that the I2C interface compatibility matches the host microcontroller system.

Analog Front End (AFE) Part Context

The OPT3101RHFR belongs to the OPT3101 family of ToF sensors from Texas Instruments. This series is designed as a high-speed, high-resolution AFE for continuous wave proximity sensing. The RHFR suffix specifically denotes the tape and reel packaging variant, distinguishing it from other packaging options like cut tape or evaluation modules within the same product line.

Analog Front End (AFE) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative TI ToF sensors such as the OPT9221 for 3D imaging applications, though functional differences exist between single-channel distance sensing and stereo vision systems.