Datasheet

LM4810
SNAS125D –FEBRUARY 2001–REVISED APRIL 2013 www.ti.com
External Components Description
Components Functional Description (See Figure 1)
The inverting input resistance, along with R
f
, set the closed-loop gain. R
i
, along with C
i
, form a high pass filter with f
c
=
1. R
i
1/(2πR
i
C
i
).
The input coupling capacitor blocks DC voltage at the amplifier's input terminals. C
i
, along with R
i
, create a highpass filter
2. C
i
with f
c
= 1/(2πR
i
C
i
). Refer to SELECTING PROPER EXTERNAL COMPONENTS, for an explanation of determining the
value of C
i
.
3. R
f
The feedback resistance, along with R
i
, set closed-loop gain.
This is the supply bypass capacitor. It provides power supply filtering. Refer to Application Information for proper placement
4. C
S
and selection of the supply bypass capacitor.
This is the BYPASS pin capacitor. It provides half-supply filtering. Refer to SELECTING PROPER EXTERNAL
5. C
B
COMPONENTS for information concerning proper placement and selection of C
B
.
This is the output coupling capacitor. It blocks the DC voltage at the amplifier's output and forms a high pass filter with R
L
at
6. C
O
f
O
= 1/(2πR
L
C
O
)
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