Nxp B.v.

Marcel J M Pelgrom

Victor Zieren

Hendricus Joseph Maria Veendrick

Hendricus J M Veendrick

A sensor () for sensing jitter in a clock signal has a DLL () for locking a clock signal and a delayed version of the clock signal. The sensor comprises a delay line () having a first number of cascaded controllable delay segments. The DLL uses a second number of the cascaded delay segments for generating a delay of an average clock period of the clock signal. The second number is smaller than the first number. The sensor also has a comparator () for supplying a sensor output signal representative of a comparison of the clock signal and a further delayed version of the clock signal. The further delayed version of the clock signal is obtained from an output of a specific one of the delay segments located in the delay line after the second number of cascaded delay segments.

DLL for period jitter measurement

A voltage reference circuit and method for generating a reference voltage using the circuit uses a comparison of the voltages on first and second nodes of a diode resistor network to produce a comparison signal, which is then used to increase the voltage on an output of a charge pump to generate the reference voltage.

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Helmond, Netherlands

Marcel J M Pelgrom