原文是这样：
In intermediate frequency (IF) undersampling applications,
any shunt capacitors should be reduced. In combination with
the driving source impedance, they limit the input bandwidth.
See the AN-742 Application Note, Frequency Domain Response
of Switched-Capacitor ADCs; the AN-827 Application Note, A
Resonant Approach to Interfacing Amplifiers to Switched-Capacitor
ADCs; and the Analog Dialogue article, “Transformer-Coupled
Front-End for Wideband A/D Converters” for more information
on this subject.
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