一、Sigma-Delta调制器结构及仿真
PSD Version201505300-20X: 3000Y: -12.3-40-60-80dB-100X: 3156Y: -110.6-120-140-160-18000.511.52Hz2.533.544.5x 105
幅值3000Hz 400mv 98dB
PSD Version20150530-20X: 3000Y: -18.32-40-60-80dB-100X: 2842Y: -106.6-120-1401500200025003000Hz350040004500
幅值200mV 88dB
PSD Version20150530-20X: 3000Y: -14.8-40-60dB-80X: 2921Y: -93.8-100-120-14050010001500200025003000Hz35004000450050005500
幅值300mv 76dB
二、抽取滤波器设计
PSD Version2015053070X: 3000Y: 67.3360504030dB20X: 6000Y: 14100-10-20-1000010002000Hz3000400050006000
正负0.5V
PSD Version2015053080X: 3000Y: 67.3470605040dB3020100X: 3360Y: -11.04-10-20-500050010001500Hz2000250030003500
0 1 输出
PSD Version20150530-20X: 3000Y: -17.37-40-60dB-80X: 3025Y: -99.83-100-120280029003000Hz3100320033003400
PSD Version20150530110100X: 3000Y: 102.2908070dB6050403020X: 3580Y: 14.10500100015002000Hz25003000350040004500PSD Version20150530120100X: 3000Y: 102.2806040dB20X: 3580Y: 14.10-20-40-6000.511.52Hz2.533.544.5x 105