Why don you spec psrr and cmrr in the datasheet?
PSRR and CMRR is meaningful and well understood in the case of an op amp. However, its meaning for a clock chip is much less clearly stated, so we do not spec these for our clock devices. As stated in the data sheets, the power supply voltage must be kept within 5% of the nominal voltage (3.3V) in order to meet the data sheet specs. We don’t specify a small signal noise limit on the power supply. Rather, we indicate that good power supply design and bypassing is assumed.
