+15VDC
12
LA
15
4
+In
G = 1000
RA
x1000
5
11
∆eIN = 1mVp-p
INA102
6
eOUT = 1Vp-p
to isolation amplifier.
RL
7
10
14
9
–In
–15VDC
FIGURE 8. ECG Amplifier or Recorder Preamp for Biological Signals.
+9V
G = 100
12
15
3
7
+In
x100
eOUT
11
∆ eIN
INA102
100kΩ
100kΩ
6
14
10
–In
9
eOUT contains a midscale
DC voltage of +4.5V.
FIGURE 9. Single Supply Low Power Instrumentation Amplifier.
Isolation
Barrier
15
2
3
4
7
6
14
+In
x10
x100
x1000
Isolation
Amplifier
ISO100
x1
11
3650
or
∆ eIN
INA102
eOUT
9
3656 *
* Does not require
external isolation
power supply.
–In
10
Bias Current
Return Resistor
12
1MΩ
–15VDC
722
Isolation
Power
Note that x1000 gain sense has not
Supply
been used to facilitate simple switching.
FIGURE 10. Precision Isolated Instrumentation Amplifier.
®
BB [ BURR-BROWN CORPORATION ]
