Delay generator

A delay generator (15) having very high accuracy and stability over temperature variations and time, is suited for very short delay times, such as in clock recovery circuits in very high-speed digital data transmission systems. A delay line (20), having one end either open or shorted and a round-trip delay time of tau , is driven by a voltage source (24), the output impedance thereof being matched to the delay line, and a current source (23). The current source and the voltage source are driven by an input signal V(t) to be delayed. The voltage source is provided by a transistor operating as a voltage follower, which also operates to provide as an output a signal Vout(t) dependent on the difference between the input signal and the voltage on the delay line. This output serves as the output of the delay generator, the input signal delayed by the time tau .