OPTICAL TIME-OF-FLIGHT SENSOR IC FAMILY High-performance, cost-effective, detection and ranging for any environment The LeddarCoreTM family of sensor integrated circuits (ICs) is based on Leddar® – LeddarTech’s patented direct optical time-of-flight (ToF) technology. The technology’s key advantages are high sensitivity, immunity to noise and powerful time-domain processing capabilities. These benefits enable the development of new high-performance ToF sensors and enhanced designs of existing ToF sensors, both achievable through the integration of the LeddarCore. Features All the Power of Leddar, Built In Compared to other ToF methods, Leddar complements direct ToF measurement with complex, patented algorithms applied to a discrete-time representation of the received echo (see Figure 1). In addition, this unique technology provides three key benefits that competing methods do not: a higher range-to-power ratio, enhanced target detection in low visibility, and the ability to resolve multiple targets simultaneously from a single light beam. The algorithms also provide additional benefits such as enhanced dynamic range, temperature compensation, and noise cancellation. • Single- or multiple-photodetector element configurations • High sensitivity • Fast and accurate measurements • Immunity to ambient light • Low power consumption • Wide operating temperature range Benefits • High range-to-power ratio • Detection of targets in low visibility • Ability to resolve multiple targets at once Conceptual Overview Figure 1: Illustration of transmitted light pulse, digitized return signal (echo) and detection of multiple targets capability (bottom signal). PHOTODIODE AND ANALOG FRONT END DIODES AND PULSER LEDDAR CORE LEDDAR CONFIGURATOR Tuning parameters SPI API APPLICATION MCU Application PCB Designed by customers Provided by LeddarTech LEDDAR SIGNAL PROCESSING LIBRARY LC01: Designed by customers LC16: Embedded in the chip ICs for a Wide Range of Applications The LeddarCore LC01 is a very small and ultra-low-power IC for the development of single-photodetector sensors. It offers exceptional flexibility, as the developer can select the optoelectronic components and design the analog front-end (AFE) and pulse driver circuits. The LC16il is a 16-photodetector-element device that incorporates the photodiode array and the analog front-end components. It also includes the fundamental signal-processing functions for detection and ranging inside the IC, thus freeing the application MCU resources for other tasks. Optionally, the full waveform can be acquired and processed by the application MCU. Ultimate Development and Integration Flexibility To ease integration of the LeddarCore, development tools such as an evaluation board, reference design, sample code, and the signal processing library are offered. The documentation contains design guides to assist developers in sensor development, including optical, optoelectronic and electronic components selection and design. Software tools and documentation are also provided to facilitate configuration, tuning and calibration of the sensor. Configurations and Specifications Configuration LeddarCore LC01 LeddarCore LC16il Integrated photodiode NO YES (linear array) Integrated AFE NO YES Number of channels/elements 1 16 Number of pulse trigger pins 3 2 Accumulation settings 1 to 1024 in power of 2 increment 1 to 1024 Oversampling settings 1 to 8 in power of 2 increment 1 to 8 in power of 2 increment Signal spatial resolution Input clock frequency Communication interface Power supply In-chip detection and ranging Typical applications 0.3 m to 0.468 m 0.1875 m 40 MHz to 62.5 MHz 33.33 MHz SPI up to 25 MHz SPI up to 25 MHz 1.2 V and 3.3 V 3.3 V and 24 V NO YES Level sensing Altimeter Proximity sensing Machine safety Collision avoidance Security and surveillance Occupancy sensing Bulk material volume estimates Robotics guidance Unmanned vehicle navigation Traffic management Smart lighting LeddarTech: More than Just a Technology Provider LeddarTech can become a true partner in making your vision a reality and your project a commercial success. Our development support team has extensive experience with sensing applications in various industries and can provide assistance to support your development, optimize your application, and reduce your time to market. If you need help during specific phases of your project, or if you want to validate or optimize your design, call us. T: +1 418 653-9000 T: 1 855 865-9900 (USA & Canada only) F: 1 418 653-9099 www.leddartech.com LeddarTM is a registered trademark of LeddarTech Inc. LeddarCore™ is a trademark of LeddarTech Inc. Leddar® technology is covered by one or more of the following U.S. patents: 7,855,376 B2, 7,554,652, 8,319,949 B2, 8,310,655, 8,242,476, 8,908,159, 8,767,215 B2 or international equivalents. Other patents pending. The content of this datasheet is subject to change without notice. Find the most recent version of our datasheet on our website. 54C0005 - 2 - 052015 - Printed in Canada - Copyright LeddarTech Inc. © 2015 All rights reserved.