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AD606输出响应的提速
消耗积分:2 |
格式:rar |
大小:135 |
2009-06-02
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The AD606 is a complete demodulating logarithmic amplifier.
As such it incorporates successive detection
stages, a dc feedback section to null out the input offset
voltage, a current summer to add up the logarithmic current
outputs of the stages, and a low pass filter for the
log output to remove the carrier from the demodulated
signal. The latter, while offering useful integration for
some lower speed systems, slows down the response of
the logarithmic output in high speed systems. It is therefore
desireable in high speed systems to bypass this filter
and realize the faster response.
As such it incorporates successive detection
stages, a dc feedback section to null out the input offset
voltage, a current summer to add up the logarithmic current
outputs of the stages, and a low pass filter for the
log output to remove the carrier from the demodulated
signal. The latter, while offering useful integration for
some lower speed systems, slows down the response of
the logarithmic output in high speed systems. It is therefore
desireable in high speed systems to bypass this filter
and realize the faster response.
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