Time-digital converter enables high-speed scanning precision LiDARs
The 7x7mm chip features high-speed LVDS interfaces for the Start and Stop signals at the light source in optical ranging equipment and scanners, and LVDS measurement outputs. It can be used to measure the time-of-flight of optical signals to a precision of 20ps per channel, or 10ps in dual-channel high-resolution mode, and captures measurements at very high speeds of up to 70Msamples/s.
Single-beam laser ranging systems based on the precise, high-speed AS6501 can render extremely accurate and detailed outlines of objects in the field of view, claims the manufacturer. The AS6501, which includes on-board logic for measuring the time interval between the Start and Stop signals, requires few external components. It draws only 450mW from a 3.3V supply. The AS6501 can also be used in designs based on a microcontroller which require a serial peripheral interface (SPI). The AS6501 features a four-wire SPI for configuration settings, which can also optionally be used for data read-out.
ams – www.ams.com
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