Front-end equalizer and amplifier circuit
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United States of America Patent
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Sep 4, 2012
Grant Date -
Oct 6, 2011
app pub date -
Apr 1, 2011
filing date -
Apr 6, 2010
priority date (Note) -
Expired
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Abstract
A front-end equalizer and amplifier circuit includes two pairs of fully differential pair transistors, wherein the tail currents of one pair of transistors are connected with ground and connected with each other through the capacitive component to realize the connection between the pair of transistors and the feedback capacitor, the tail currents of the other pair of transistors are connected with ground and connected with each other through the resistive component to realize the connection between the other pair of transistors and the feedback resistor, the output positive and negative ends of each pair of transistors are connected with each other through the inductive component, thus forming the load for connecting the voltage source. The circuit increases the high frequency gain. Its single-stage gain is equivalent to the multi-stage gain. Compared with the traditional multi-stage structure, the present invention decreases the power consumption and area, and improves the reliability.
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