Ultrasonic flow converters for heat, water and gas have recently become more and more popular. Since the beginning, ams (previously acam) TDC products successfully solved the time-of-flight measurement task in those
T applications. With the UFC family PMT provides solutions that extend the functionality of pure time measurement. The flow measurement part of the electronics can be designed in a very compact manner as the main elements of the analog frontend like comparator and temperature measurement are already integrated into the UFC.
The term time-to-digital converter is used when talking about time interval measurements in the range of 1 nanosecond down to the picosecond range. The first TDCs have been developed for scientific and research purposes. They have been realized as a combination of time-to-analog (TAC) and analog-to-digital (ADC) converter. A sophisticated design of the TAC together with limitations to update rate or multihit capability make these solutions inattractive for industrial applications.