Datasheet

LM6181
SNOS634B –MAY 1998–REVISED MAY 2013 www.ti.com
TYPICAL APPLICATIONS
CURRENT FEEDBACK TOPOLOGY
For a conventional voltage feedback amplifier the resulting small-signal bandwidth is inversely proportional to the
desired gain to a first order approximation based on the gain-bandwidth concept. In contrast, the current
feedback amplifier topology, such as the LM6181, transcends this limitation to offer a signal bandwidth that is
relatively independent of the closed-loop gain. Figure 77 and Figure 78 illustrate that for closed loop gains of −1
and −5 the resulting pulse fidelity suggests quite similar bandwidths for both configurations.
Figure 77.
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