result, the sensor achieves excellent resolution and maintains accurate distance measurements within ±5% in both dark and bright conditions.
Conclusion
The TMF8806 represents a step forward in dToF sensing. With built-in 2.5-meter and 5-meter modes that don’t require a firmware download, it streamlines development for engineers looking to add precise ranging to their designs — whether for wake-on-approach interfaces, robotic navigation, or touchless interaction. But the real beauty of the TMF8806 is how it is built to fit into the real world. Its ultra-low power operation makes it a natural choice for low-power systems, while its flexible optical configurations support varying cover glass thicknesses and air gaps. Plus, with support for lower interface voltages, it’s ready to connect with the next generation of high-integration processors. As industries push for smarter, more responsive systems, dToF sensors help bridge the gap between simple detection and intelligent interaction. Whether facilitating precision sensing in an automated warehouse or improving gesture control in consumer electronics, they continue to refine the way machines interact with their environment.
How the histogram distinguishes between detected objects and noise. (Image: ams OSRAM.)
The sensor further has the ability to support a lower interface voltage of 1.2-V I²C, in addition to the higher voltages that other ams OSRAM devices offer. This enables it to connect with a wide range of host processors, such as higher-integration processors that are becoming more widely used. The TMF8806’s parts are rated for operation across a broad temperature range (-40 to 85°C), and support a voltage supply range of up to 3.5 V. The TMF8806 also features improvements in electromagnetic compatibility (EMC), with the ability to enable spread spectrum modes for reducing electrical noise interference. Users can additionally set thresholds for lower and upper limits, where the sensor will only trigger an interrupt or report an object within a preset distance.
The TMF8806 operates with a 940-nm VCSEL, which includes built-in Class 1 eye safety circuitry. This system actively monitors the VCSEL and shuts down the driver if a fault is detected. The device also incorporates sunlight rejection filters to enhance outdoor performance. For applications requiring even stronger sunlight rejection, users can apply additional external filtering on the cover glass to further improve accuracy in bright environments. At the core of the TMF8806 is a high-sensitivity SPAD detection system and a fast TDC architecture,
capable of processing sub- nanosecond light pulses, as
mentioned earlier. It has a high SNR and wide dynamic range. Its built-in crosstalk compensation minimizes false readings from cover glass reflections, and it can reject multipath interference. As a
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