Current Switches in Improved High Speed DAC and Control Signals of Switches
一种改进的高速DAC电流开关及其控制信号的产生

The influence of current switche s on output glitch of high-speed current-steering CMOS D/A converter is thoroughly analyzed.Methods for reducing glitch are presented.The amended current switche s and control signal circuit are described.The switches are utilized in a 8-bit,5V power supply DAC.The result of simulation reveals that the output glitch is no more than 3pV-s.For sampling frequencies up to 100MSample/s,the spurious free dynamic range is up to 53dB for signals from DC to Nyquist.