Datasheet
7
®
PGA103
True
instrumentation
amplifier input.
FIGURE 4. Programmable Gain Instrumentation Amplifier.
PGA103
+15V
G = 0.1, 1, 10
V
IN
V
O
11.3kΩ
D
1
–15V
A
1
A
0
D
1
, D
2
; IN4148
102kΩ
Accepts inputs
to ±120V.
A
1
A
0
D
2
PGA205
PGA103
V
IN
–
V
IN
+
V
+
V
–
V
+
V
–
G
1
= 1, 2, 4, 8
G
2
= 1, 10, 100
2
1
3
7
6
8
G = G
1
• G
2
4
A
1
A
0
1
2
4
8
10
20
40
80
100
200
400
800
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
GAIN
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
V
O
MODEL CHARACTERISTICS
INA103 Low Noise, 1nV/√Hz IA
INA105 G = 1 Difference Amp
INA106 G = 10 Difference Amp
INA114 Resistor-Programmed Gain, Precision
INA117 ±200V C-M Input Range Difference Amp
INA111 FET Input, High Speed IA
INA131 Precision, G = 100 IA
FIGURE 6. Instrumentation Amplifier with Programmable Gain Output Amp.
FIGURE 5. Wide Input Voltage Range Amplifer.
INA
PGA103
V
IN
–
V
IN
+
G
1
G
2
= 1, 10, 100
G = G
1
• G
2
A
1
V
O
A
0