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EL5257IS-T13

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
13
FN7386.6
July 7, 2009
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
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 a few resistors.
FIGURE 36. SALLEN KEY HIGH PASS FILTER
Equations simplify if we let
all components be equal to R = C
+
-
V+
V-
V
2
5V
L
1
10µH
L
1
10µH
R
6
1kΩ
C
5
1nF
C
4
1nF
V
OUT
R
7
1kΩ
V
3
5V
R
1
1kΩ
R
2
1kΩ C
2
1nF
V
1
C
1
1nF
C
5
1nF
R
5
1kΩ
C
3
1nF
R
A
1kΩ
R
B
1kΩ
TUNED POWER
BYPASS NETWORK
TUNED POWER
BYPASS NETWORK
wo
1
R
1
C
1
R
2
C
2
-----------------------------------
=
Q
1
1K–〈〉
R
1
C
1
R
2
C
2
---------------
R
1
C
2
R
2
C
1
---------------
R
2
C
2
R
1
C
1
---------------++
--------------------------------------------------------------------------------------------
=
Holp K=
Holp
K
4K–
-------------
=
wo
2
RC
---------
=
Q
2
4K–
-------------
=
+
-
-
+
-
+
+
-
e
o
e
o
4
e
o
3
REF
R
3
R
3
R
3
R
3
R
3
R
3
R
2
R
2
R
G
A
2
e
2
A
4
A
3
R
3
R
3
A
1
e
1
+
-
e
o3
12R
2
R
G
⁄+()e
1
e
2
–()–= e
o4
12R
2
R
G
⁄+()e
1
e
2
–()=
e
o
21 2R
2
R
G
⁄+()e
1
e
2
–()–=
BW
2f
C1 2,
A
Di
------------------
=
A
Di
21 2R
2
R
G
⁄+()–=
EL5156, EL5157, EL5256, EL5257
14
FN7386.6
July 7, 2009
Strain Gauge
The strain gauge is an ideal application to take advantage of
the moderate bandwidth and high accuracy of the EL5152.
The operation of the circuit is very straightforward. As the
strain variable component resistor in the balanced bridge is
subjected to increasing strain, its resistance changes,
resulting in an imbalance in the bridge. A voltage variation
from the referenced high accuracy source is generated and
translated to the difference amplifier through the buffer
stage. This voltage difference as a function of the strain is
converted into an output voltage.
FIGURE 37. STRAIN GAUGE OPERATIONAL CIRCUIT
EL5156, EL5157, EL5256, EL5257
15
FN7386.6
July 7, 2009
EL5156, EL5157, EL5256, EL5257
Small Outline Package Family (SO)
GAUGE
PLANE
A2
A1
L
L1
DETAIL X
4° ±4°
SEATING
PLANE
e
H
b
C
0.010 BM CA
0.004 C
0.010 BM CA
B
D
(N/2)
1
E1
E
NN
(N/2)+1
A
PIN #1
I.D. MARK
h X 45°
A
SEE DETAIL “X”
c
0.010
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO)
SYMBOL
INCHES
TOLERANCE NOTESSO-8 SO-14
SO16
(0.150”)
SO16 (0.300”)
(SOL-16)
SO20
(SOL-20)
SO24
(SOL-24)
SO28
(SOL-28)
A 0.068 0.068 0.068 0.104 0.104 0.104 0.104 MAX -
A1 0.006 0.006 0.006 0.007 0.007 0.007 0.007 ±0.003 -
A2 0.057 0.057 0.057 0.092 0.092 0.092 0.092 ±0.002 -
b 0.017 0.017 0.017 0.017 0.017 0.017 0.017 ±0.003 -
c 0.009 0.009 0.009 0.011 0.011 0.011 0.011 ±0.001 -
D 0.193 0.341 0.390 0.406 0.504 0.606 0.704 ±0.004 1, 3
E 0.236 0.236 0.236 0.406 0.406 0.406 0.406 ±0.008 -
E1 0.154 0.154 0.154 0.295 0.295 0.295 0.295 ±0.004 2, 3
e 0.050 0.050 0.050 0.050 0.050 0.050 0.050 Basic -
L 0.025 0.025 0.025 0.030 0.030 0.030 0.030 ±0.009 -
L1 0.041 0.041 0.041 0.056 0.056 0.056 0.056 Basic -
h 0.013 0.013 0.013 0.020 0.020 0.020 0.020 Reference -
N 8 14 16 16 20 24 28 Reference -
Rev. M 2/07
NOTES:
1. Plastic or metal protrusions of 0.006” maximum per side are not included.
2. Plastic interlead protrusions of 0.010” maximum per side are not included.
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.
4. Dimensioning and tolerancing per ASME Y14.5M-1994
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

EL5257IS-T13

Mfr. #:
Buy EL5257IS-T13
Manufacturer:
Renesas / Intersil
Description:
IC OPAMP VFB 2 CIRCUIT 8SOIC
Lifecycle:
New from this manufacturer.
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