Teledyne LeCroy DA1855A - Manual (Page 87)

Operator’s Manual
922258-00 Rev A 81
The common mode frequency in these graphs is assumed to be sinusoidal. In real life applications,
the common mode signal is seldom a pure sine wave. Signals with pulse wave shapes contain
frequency components much higher than the repetition rate may suggests. As such, it is very
difficult to predict actual performance in the application for CMRR versus frequency graphs. The
practical application of these graphs is to compare the relative common mode rejection
performance between different amplifiers.
Figure 22, Typical CMRR
Figure 23, Noise Density
(Referred to the input)