Research And Design Of High-speed Current-steering Cmos Dac

This paper presented the general design methodology and process of high speed digital-to-analog converters and accomplished the circuit design of a 8bit 100MHz D/A converters。This paper has five chapters。First chapter the resource and meaning of this research,the trends and states for high speed D/A converters design both in China and foreign countries are included。In the second chapter,we discussed the basic theory and architecture of D/A converters,give the advantages and disadvantages between them。Analysis of the error source from the system view are added in chapter three for the current-steering D/A converters design。Based on the model of chapter three,circuit design of a 8bit 100Mz current-steering D/A converters are presented in chapter four,including analog circuit design and digital circuit design。The whole circuit architecture and simulation results are illustrated in chapter five,the design-for-test and test technique for high speed D/A converters are also discussed in this chapter。Through system analysis the design methodology of high speed current-steering D/A converters,A 3.3v 8bit 100MHz current-steering D/A converters is presented 。Simulation results show that the spurious-free-dynamic-range is better than 49dB for sampling frequency up to 100MHz and signals from dc to Nyquist frequency。Monte-Carlo simulations show that the integral non-linearity(INL) and differential non-linearity(DNL) is better than ±0.5LSB and ±0.3LSB respectively。It dissipated less than 100mW from 3.3v power supply at 100MHz sampling rate。The circuit has been designed in a UMC 0.35um CMOS process。...