ISL55001 Intersil Corporation, ISL55001 Datasheet - Page 10

• Manufacturer Part Number: ISL55001
• Description: High Supply Voltage 220MHz Unity-Gain Stable Operational Amplifier
• Manufacturer: Intersil Corporation

Differential Output Instrumentation Amplifier
The addition of a third amplifier to the conventional three
amplifier instrumentation amplifier introduces the benefits of
differential signal realization, specifically the advantage of
using common-mode rejection to remove coupled noise and
e
2
e
1
R
V
G
R
R
+
+
-
-
1
A
A
2
2
2
1
1kΩ
R
1
R
R
3
3
R
R
1kΩ C
R
3
3
10
2
1nF
FIGURE 28. DIFFERENTIAL OUTPUT INSTRUMENTATION AMPLIFIER
2
1nF
C
R
+
+
-
-
1kΩ
R
R
1
R
A
A
R
3
3
3
3
4
3
A
REF
FIGURE 27. SALLEN-KEY HGH PASS FILTER
1kΩ
R
+
-
B
+
-
e
e
e
o
o
o
3
4
V+
V-
V
5V
V
5V
1nF
1nF
C
C
2
3
5
5
ISL55001
V
OUT
R
1kΩ
BW
7
e
e
o3
o
=
ground potential errors inherent in remote transmission. This
configuration also provides enhanced bandwidth, wider
output swing and faster slew rate than conventional three
amplifier solutions with only the cost of an additional
amplifier and few resistors.
=
=
–
2f
----------------- -
–
2 1
A
(
(
C1 2
1
Di
+
+
,
2R
2R
2
2
Holp
Holp
Q
Q
wo
wo
⁄
⁄
R
R
=
=
A
G
G
Di
=
=
) e
) e
1 (
4
(
(
=
=
RC
=
1
1
−
−
K
2
R
–
4
2
–
–
K
K
2 1
e
e
1
K
−
2
(
C
2
)
)
)
K
Equations simplify if we let
all components be equal R=C
1
1
+
R
R
R
2R
2
e
2
1
C
o4
2
C
C
⁄
2
1
2
R
=
G
+
(
)
1
1
+
2R
R
R
1
2
2
C
C
⁄
2
R
1
G
+
) e
(
1
March 9, 2006
R
–
R
e
2
1
FN6200.1
2
C
C
)
1
2