TDC-GP22V1 Time-to-Digital Converters Time-of-Flight Laser Range Finder Sensor

TDC-GP22 is next generation¡®s upgrade for TDC-GP21. It is a 100% pin-to-pin and functionalcompatible upgrade of TDC-GP21, with an extended functionality. Especially the new first-wavedetection capability makes the TDC-GP22 perfectly suited for ultrasonic water meters with theirhigh dynamics. The programmable offset range of the comparator is increased to ¡À 35 mV andthe offset is automatically set back to zero after the first wave detection. Measuring the relativepulse width of the first wave gives the user an indication of the strength of the received signal.This can be used for adopting the system to long-term signal attenuation or for bubble detection.The multi-hit data processing and data read-out is simplified compared to TDC-GP21.All in all, the TDC-GP22 is a further improvement and simplification for the design of ultrasonicheat meters and a necessary step for compact ultrasonic water meters.