The logic design of high precision time-to-pulse-height converters

Digital instrument with configurable hardware and firmware for multi-channel time measures

“…Historically, the well-established method for highaccuracy measurement of time intervals is the Time-to-Amplitude Conversion (TAC). 11,12 However, nowadays in the digital era, the timing information can be converted directly in a digit without using any analog circuit. These systems, called Time-to-Digital Converters (TDCs), are the landmark for determining the time instants at which digital events take place.…”

Monolithic time to amplitude converter for time correlated single photon counting

“…An input logic is used to accept the start and stop signals only when they arrive in the correct order and to drive the conversion stage; furthermore it is used as a protection to avoid unwanted distortions in the conversion results. 7 The conversion stage, in addition to the integrating capacitor and the switching system, also includes a feedback loop that sets the correct bias condition after a conversion. A reference current source provides a conversion current that is stable over supply and temperature variations and is characterized by a transient response that limits the nonlinearity of the conversion.…”