Datasheet

LM4911, LM4911Q
SNAS152M –MAY 2004–REVISED JUNE 2011 www.ti.com
External Components Description
(Figure 2)
Components Functional Description
Inverting input resistance which sets the closed-loop gain in conjunction with R
f
. This resistor also forms a high-pass
1. R
I
filter with C
i
at f
c
= 1/(2πR
i
C
i
).
Input coupling capacitor which blocks the DC voltage at the amplifier's input terminals. Also creates a high-pass filter
2. C
I
with R
i
at f
c
= 1/(2πR
i
C
i
). Refer to the section Proper Selection of External Components, for an explanation of how to
determine the value of C
i
.
3. R
f
Feedback resistance which sets the closed-loop gain in conjunction with R
i
.
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply section for information
4. C
S
concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
5. C
B
Components, for information concerning proper placement and selection of C
B
Output coupling capacitor which blocks the DC voltage at the amplifier's output. Forms a high pass filter with R
L
at f
o
=
6. C
o
1/(2πR
L
C
o
)
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