EL5451IS Intersil, EL5451IS Datasheet - Page 15

• Manufacturer Part Number: EL5451IS
• Description: IC AMP 200MHZ V-FB 14-SOIC
• Manufacturer: Intersil

Specifications of EL5451IS

• Amplifier Type: Voltage Feedback
• Number Of Circuits: 4
• Slew Rate: 100 V/µs
• Gain Bandwidth Product: 40MHz
• -3db Bandwidth: 200MHz
• Current - Input Bias: 20nA
• Voltage - Input Offset: 500µV
• Current - Supply: 1.35mA
• Current - Output / Channel: 70mA
• Voltage - Supply, Single/dual (±): 5 V ~ 12 V, ±2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -

Strain Gauge
The strain gauge is an ideal application to take advantage of
the moderate bandwidth and high accuracy of the EL5150.
The operation of the circuit is very straight-forward. As the
strain variable component resistor in the balanced bridge is
subjected to increasing strain, its resistance changes
0V
V5
R15
VARIABLE SUBJECT TO STRAIN
1k
R14
1k
15
R15
EL5150, EL5151, EL5250, EL5251, EL5451
1k
22
22
4
4
R18
R17
1k
1k
1k
RF
3
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.
2
V4
+
-
V2
U1A
11
V+
V-
4
5V
5V
1
0.1µF
0.1µF
RL
1k
V
OUT
(V1+V2+V3+V4)
January 16, 2008
FN7384.7