Abstract: A digital circuit includes a plurality of arbiters, each arbiter having first and second input ports and an output port at which is provided an arbiter output signal. Each first input of the plurality of arbiters is connected to a first common line and each second input of the plurality of arbiters is connected to a second common line. The digital circuit further includes a decision circuit, having a plurality of inputs and an output, with each of the inputs of the decision circuit coupled to a corresponding one of the output of the plurality of arbiters. The decision circuit provides an output signal indicative of the time difference between a signal fed to the first common line and a signal fed to the second common line. With such an arrangement, phase jitter or timing jitter in a clock network can be measured with relatively high resolution and the system cam resolve cycle-by-cycle jitter with a predetermined resolution.

Abstract: Multiple clock circuits are connected by phase detector circuits to generate and synchronize local clock signals. For example, a clock distribution circuit includes a first clock circuit that is configured to generate a first clock signal in response to a first error signal, and a second clock circuit that is configured to generate a second clock signal in response to the first error signal. A first phase detector circuit connects the first clock circuit to the second clock circuit and is configured to generate the first error signal in response to the first and the second clock signals.

Abstract: Mixing, modulation and demodulation using the nonlinear properties of microelectromechanical resonators and filters are described. Mixing followed by filtering is implemented using microelectromechanical filters with nonlinear input transducers. AM modulation is implemented by passing a carrier signal through the output transducer of a microelectromechanical filter. FM and FSK demodulation is accomplished using parallel banks of microelectromechanical filters. The invention can be implemented using integrated circuit technology.