spectre noise analysis only needs certain source . qpnoise and pnoise analysis need periodic source ,which used in specreRF. and ADS also can simulate noise.
Hi,
I suggest you to refer John & Martin's and Razavi's as well as Gray & Hurst's books, if you want to start to understand noise performance and noise analysis fundamentally! but if you have a perspective, you may to refer Murmann's slides at Stanford to more find out about noise analysis in Switched-Capacitor circuits (input referred noise, etc by hand-calculation and simulation.