INA134
2
5
INA134
V
1
6
V
1
1
V
0
= V
1
+ V
2
–In
1/2
OPA2134
R
2
2
5
V
2
3
R
1
6
R
2
V
0
0utput
FIGURE 3. Precision Summing Amplifier.
V
2
INA134
–In
2
5
1/2
OPA2134
3
1
+In
V
O
= (1 + 2R
2
/R
1
) (V
2
–V
1
)
6
3
6
BUF634
V
O
FIGURE 5. High Input Impedance Instrumentation Amplifier.
+In
3
1
FIGURE 4. Boosting Output Current.
The difference amplifier is a highly versatile building
block that is useful in a wide variety of applications. See
the INA105 data sheet for additional applications ideas,
including:
• Current Receiver with Compliance to Rails
• Precision Unity-Gain Inverting Amplifier
•
±10V
Precision Voltage Reference
•
±5V
Precision Voltage Reference
• Precision Unity-Gain Buffer
• Precision Average Value Amplifier
• Precision G = 2 Amplifier
• Precision Summing Amplifier
• Precision G = 1/2 Amplifier
• Precision Bipolar Offsetting
• Precision Summing Amplifier with Gain
• Instrumentation Amplifier Guard Drive Generator
• Precision Summing Instrumentation Amplifier
• Precision Absolute Value Buffer
• Precision Voltage-to-Current Converter with Differential
Inputs
• Differential Input Voltage-to-Current Converter for Low
I
OUT
• Isolating Current Source
• Differential Output Difference Amplifier
• Isolating Current Source with Buffering Amplifier for
Greater Accuracy
• Window Comparator with Window Span and Window
Center Inputs
• Precision Voltage-Controlled Current Source with Buff-
ered Differential Inputs and Gain
• Digitally Controlled Gain of
±1
Amplifier
®
9
INA134/2134
BURR-BROWN [ BURR-BROWN CORPORATION ]
