A by-inspection analysis method for multiphase switcbedcapacitor (SC) networks using signal-flow graph (SFG) techniques is presented. The method is quite general; no restrictions on the networks are required. It is also very simple and direct in the sense that it allows an immediate, by-inspection derivation of the SFG merely on the basis of a given SC network. The method is primarily useful fo...

CMOS continuous-time and switched-capacitor filters which operate at high frequencies with high Quality factor Q are difficult to realize. The finite gain and tlie fulite bandwidth of the integrator amplifiers are the main limitation. This paper describes two techniques to siniultaneously increase bandwidth. transconductance. and DC-gain of an amplifier without changing the excess bias or the p...

The sinewave generators based the switched-capacitor (SC) technologies are implemented in transistor level. This analogue sinewave generator consists of two parts: an approximate sinewave generator and a filter. The structure of this generator is robust and easily-controlled, in which an approximate sinewave is firstly generated based on SC circuits and then filter the harmonics. The main advan...

This paper discusses a circuit family including a dependent switched capacitor (DSC). The DSC function is instantaneously short of one capacitor at the moment when its voltage reaches a threshold. The chaos generation can be guaranteed theoretically, We also consider a master-slave system. If there does not exist a homoclinic orbit in the master chaos attractor, it exhibits either in-phase or i...

| Periodic small-signal analysis is a recently developed approach for AC and noise analysis of linear periodically-varying circuits. This paper presents several new approaches to characterizing the transfer functions, noise, and distortion of communication circuits using this new technique. A receiver is used as an example, but the techniques presented are applicable to a wide variety of circui...

A simple and efficient method for improving the linearity of a two capacitor charge redistribution digital to analog converter (DAC) is presented. This method utilizes consecutive interchanging of the voltages on the capacitors for each bit being converted. It is shown that the accuracy achieved by the proposed algorithm is orders of magnitude higher compared to this of the conventional method....

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A circuit for generating reference voltages for an A D converter is presented. The circuit consisting of a bandgap reference and a driver circuit is capable of operating on sub 1-volt supply voltages. The circuit is designed using a standard 0.5 p m CMOS technology. Simulations show maximum 0.24% variation in the generated reference voltage over a temperature range from -20 "C to I00"C and a su...