INA102 Burr-Brown Corporation, INA102 Datasheet - Page 8

• Manufacturer Part Number: INA102
• Description: Low Power INSTRUMENTATION AMPLIFIER
• Manufacturer: Burr-Brown Corporation

FIGURE 5. Amplification of a Differential Voltage from a Resistance Bridge.
FIGURE 6. Amplification of a Transformer-Coupled Analog Signal Using External Gain Set.
FIGURE 7. Isolated Thermocouple Amplifier with Cold Junction Compensation.
Compensation
Junction
Cold
IN914
e
OUT
R
G = 1 + (40k/[R
G
= G ( e
= (40k – R
e
1
–15VDC
R
IN
R
)
Resistance
Transducer
Y
[G – 1])/(G – 1)
Bridge
Analog
100
15k
Thermocouple
Signal
4990
G
V
or
+ R
K
Y
])
R
R
e
Indication
Up-Scale
Burn-Out
1
Transformer
1M
e
2
e
IN
(60Hz Hum)
(60Hz Hum)
Noise
Noise
15
14
Shield
3
7
6
R
of 10, 100, or 1000 respectively.
+In
–In
x
Y
10
+15VDC
–15VDC
4.4k , 404 , or 40
Shield
INA102
12
9
15
14
4
5
6
7
+In
x
–In
1000
G = 100
+15V
–15V
R
10
G
in gains
INA102
12
9
15
14
3
7
6
11
+15VDC
–15VDC
+In
x
–In
OPA27
100
1
10
+15V
+15V
–15V
Adjust
Span
10k
INA102
12
9
e
INA102 replaces classical three-op-amp
instrumentation amplifier.
16
OUT
+V
Optional
Offset Adjust
100k
OFFSETTING
Note: Gain drift will be higher than that
= 1000 (e
+15VDC
–15VDC
VFC32/
11
320/62
specified with internal resistors only.
+15VDC
–15VDC
2
10
– e
500
1
)
11
1M
e
OUT
Coupler
Supply
HCPL-
Opto-
2731
ISO
+15VDC
–15VDC
100k
Zero Adjust
+15VDC
Digital
®