OPT3101 ToF-based long-range proximity and distance sensor analog front end (AFE) | TI.com

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ToF-based long-range proximity and distance sensor analog front end (AFE)



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 built-in 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.


  • 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

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Compare all products in Time of flight (ToF) sensors Email Download to Excel
Part number Order Device type Sensor resolution Output format Interface Frame rate (Max) (FPS) Pixel pitch (um) Operating temperature range (C)
OPT3101 Order now AFE         Digital     I2C     4000       -40 to 85    
OPT8241 Samples not available Sensor + AFE     320 x 240     Raw Correlation Data     LVDS     150     15     0 to 70    
OPT8320 Samples not available System-on-Chip (SoC)     80 x 60     Depth Data     CMOS Parallel Interface, DVP, SSI     1000     30     0 to 70    
OPT9221 Samples not available ToF Controller         Depth Data     DVP Compatible
SSI Compatible    
120       0 to 70