參數(shù)資料
型號(hào): ISL55004IB-T13
廠商: Intersil
文件頁(yè)數(shù): 3/12頁(yè)
文件大?。?/td> 0K
描述: IC OPAMP QUAD 200MHZ 14-SOIC
標(biāo)準(zhǔn)包裝: 2,500
放大器類(lèi)型: 電壓反饋
電路數(shù): 4
轉(zhuǎn)換速率: 300 V/µs
增益帶寬積: 70MHz
-3db帶寬: 200MHz
電流 - 輸入偏壓: 600nA
電壓 - 輸入偏移: 1200µV
電流 - 電源: 8.5mA
電流 - 輸出 / 通道: 140mA
電壓 - 電源,單路/雙路(±): 4.5 V ~ 30 V,±2.25 V ~ 15 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOIC
包裝: 帶卷 (TR)
11
FN6219.2
July 27, 2006
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 few resistors.
Strain Gauge
The strain gauge is an ideal application to take advantage of
the moderate bandwidth and high accuracy of the ISL55004.
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.
+
-
+
-
+
-
eo
eo4
eo3
REF
R3
R2
RG
A2
e2
A4
A3
R3
A1
e1
+
-
FIGURE 30. DIFFERENTIAL OUTPUT AMPLIFIER
e
o3
12R
2 RG
+
() e
1
e
2
()
=
e
o4
12R
2 RG
+
() e
1
e
2
()
=
e
o
21
2R
2 RG
+
() e
1
e
2
()
=
BW
2f
C1 2
,
A
Di
------------------
=
A
Di
21
2R
2 RG
+
()
=
+
-
V+
V-
V2
5V
C12
1nF
VOUT
(V1+V2+V3+V4)
RL
1k
V4
5V
R17
1k
C6
1nF
RF
1k
+
-
R18
1k
+
-
+
-
VARIABLE SUBJECT
TO STRAIN
1k
1k
R15
R16
1k
1k
V5
0V
FIGURE 31. STRAIN GAUGE
ISL55004
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