资料介绍
高速电路设计技巧sect4SECTION 4
HIGH SPEED SAMPLING AND
HIGH SPEED ADCs, Walt Kester
INTRODUCTION
High speed ADCs are used in a wide variety of real-time DSP signal-processing
applications, replacing systems that used analog techniques alone. The major reason
for using digital signal processing are (1) the cost of DSP processors has gone down,
(2) their speed and computational power has increased, and (3) they are
reprogrammable, thereby allowing for system performance upgrades without
hardware changes. DSP offers solutions that cannot be achieved in the analog
domain, i.e. V.32 and V.34 modems.
However, in order for digital signal processing techniques to be effective in solving
an analog signal processing problem, appropriate cost effective high speed ADCs
must be available. The ADCs must be tested and spec