Datasheet

LM4864
SNAS109F –SEPTEMBER 1999–REVISED MAY 2013 www.ti.com
External Components Description
(See Figure 1)
Components Functional Description
1. R
i
Inverting input resistance which sets the closed-loop gain in conjunction with R
F
. This resistor also forms a high pass filter
with C
i
at f
c
= 1/(2π R
i
C
I
).
2. C
i
Input coupling capacitor which blocks the DC voltage at the amplifier's input terminals. Also creates a highpass filter with R
i
at f
c
= 1/(2π R
i
C
i
). Refer to 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
.
4. C
S
Supply bypass capacitor which provides power supply filtering. Refer to POWER SUPPLY BYPASSING section for
information concerning proper placement and selection of the supply bypass capacitor.
5. C
B
Bypass pin capacitor which provides half-supply filtering. Refer to PROPER SELECTION OF EXTERNAL COMPONENTS
for information concerning proper placement and selection of C
B
.
6 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM4864