Datasheet

R
G
R
G
V
OCM
R
L
V
O
R
F
R
F
C
L
R
O
R
O
EN
+
-
V
I
a
V
O
1
V
O
2
V
I
2
V
I
1
R
M
R
T
R
S
V
ICM
= V
OCM
V
ICM
=
V
I
1 + V
I
2
2
*V
CM
=
V
O
1 + V
O
2
2
*BY DESIGN
*V
CM
=
V
O
1 + V
O
2
2
*BY DESIGN
R
G
R
G
V
OCM
R
L
V
O
R
F
R
F
C
L
R
O
R
O
EN
+
-
V
I
a
V
O
1
V
O
2
V
I
2
V
I
1
R
M
R
T
R
S
= a
V
OCM
1 + A
V
WHERE R
M
<< R
G
V
ICM
= V
OCM
*
(R
G
+ R
M
)
(R
G
+ R
M
+ R
F
)
LMP8350
SNOSB80B –FEBRUARY 2011–REVISED MARCH 2013 www.ti.com
Figure 33. Relating A
V
to Input/Output Common Mode Voltages
In Figure 33 the differential closed loop gain is = A
V
= R
F
/R
G
. Please note that in single ended to differential
operation V
IN
is measured single ended while V
OUT
is measured differentially. This means that gain is really one-
half, or 6 dB, less when measured on either of the output pins separately.
Figure 34. AC Coupled for Single Supply Operation
POWER SUPPLY AND V
OCM
BYPASSING
The LMP8350 requires supply bypassing capacitors as shown in Figure 35 and Figure 36 for fastest settling time
and overall stability.
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