The time-of-flight measurement involved in ultrasonic flow sensors requires a time-to-digital converter to make time interval measurements in the range of 1 nanosecond down to the picosecond range. The TDC-GP30 system-on-chip (SoC) ultrasonic flow converter delivers resolution of <0.5 l/hr (0.13 gal/hr) with a 20-year AA-size Li-ion battery life. Capable of ultrasonic measurement frequencies up […]