yschuang
Full Member level 3
Hello, all
I have a question about how to do the noise simulation of a "flip-around" SHA in the hold phase. To be more precisely, I question the total output noise @ the hold phase because the magnitude of noise is much larger than expected. If I hook up the circuit like a charge transferred SHA,typically gain= cs/cf=2, the magnitude of output noise looks good. The plot shows the way I did the simulation. An ideal cmfb is added and ideal baluns are used to convert differential and common signals.
Thanks a lot.
*** spice deck ***
vic vic 0 1
vid vid 0 ac
.ac dec 100 1e3 100e9
.noise v(vod) vid
I have a question about how to do the noise simulation of a "flip-around" SHA in the hold phase. To be more precisely, I question the total output noise @ the hold phase because the magnitude of noise is much larger than expected. If I hook up the circuit like a charge transferred SHA,typically gain= cs/cf=2, the magnitude of output noise looks good. The plot shows the way I did the simulation. An ideal cmfb is added and ideal baluns are used to convert differential and common signals.
Thanks a lot.
*** spice deck ***
vic vic 0 1
vid vid 0 ac
.ac dec 100 1e3 100e9
.noise v(vod) vid