LME49713 Datasheet, PDF (11/16 Pages) National Semiconductor (TI) – High Performance, High Fidelity Current Feedback Audio Operational Amplifier

LME49713
www.ti.com
SNAS386F – SEPTEMBER 2007 – REVISED MARCH 2013
CAPACITIVE FEEDBACK
It is quite common to place a small lead-compensation capacitor in parallel with a voltage feedback amplifier’s
feedback resistance, R_f. This compensation reduces the amplifier’s peaking in the frequency domain and damps
the transient response. Whereas this yields the expected results when used with voltage feedback amplifiers, this
technique must not be used with current feedback amplifiers. The dynamic impedance of capacitors in the
feedback loop reduces the amplifier’s stability. Instead, reduced peaking in the frequency response and
bandwidth limiting can be accomplished by adding an RC circuit to the amplifier’s input.
Revision
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
F
Date
09/26/07
09/28/07
10/03/07
10/29/07
01/29/08
07/24/08
08/20/08
08/22/08
02/08/10
04/23/10
06/02/10
3/28/2013
REVISION HISTORY
Description
Initial release.
Added the Typical Performance curves.
Input Limit values.
Edited the Specification table, typical performance curve, and text edits.
Added more curves in the Typical Performance section.
Added the Metal Can package.
Text edits (updated some of the curves' titles).
Text edits.
Input changes on typical and limits in the EC table.
Input Typical and Limit edits on THD+N and I_OUT in the EC table.
Input text edits on the first page.
Changed layout of National Data Sheet to TI format.
Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LME49713
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