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交叉模数转换器
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2009-06-11
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It is tempting when pushing the limits of analog-to-digital
conversion to consider interleaving two or more converters
to increase the sample rate (Figure 1). However, such designs
must take into consideration several possible sources
of error.
The first consideration is the bandwidth of the converters.
For example, if the bandwidth of the converters is just over
half their sampling rate, then it would not do much good to
interleave them. Fortunately, the bandwidth of most converters
which currently “push the envelope” is often many
times higher than their sample rate since these converters are
often used in undersampling situations.
conversion to consider interleaving two or more converters
to increase the sample rate (Figure 1). However, such designs
must take into consideration several possible sources
of error.
The first consideration is the bandwidth of the converters.
For example, if the bandwidth of the converters is just over
half their sampling rate, then it would not do much good to
interleave them. Fortunately, the bandwidth of most converters
which currently “push the envelope” is often many
times higher than their sample rate since these converters are
often used in undersampling situations.
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