8

®

INA154

The INA154 can be combined with op amps to form a complete instru-

mentation amplifier with specialized performance characteristics. Burr-

Brown offers many complete high performance IAs. Products with related

performances are shown at the right.

SIMILIAR COMPLETE

A1, A2

FEATURE

BURR-BROWN IAs

OPA227

Low Noise

INA103

OPA129

Ultra Low Bias Current (fA)

INA116

OPA277

Low Offset Drift, Low Noise

INA114, INA128

OPA2134

FET Input (pA)

INA111, INA121

FIGURE 5. Boosting Output Current.

FIGURE 6. Pseudoground Generator.

FIGURE 4. Precision Instrumentation Amplifier.

5

6

1

3

INA154

2

V

1

V

O

A

2

A

1

R

2

R

2

R

1

–In

V

2

+In

V

O = (1 + 2R2/R1) (V2 –V1)

V

1

V

2

5

6

1

3

V

0 = V1 + V2

INA154

2

FIGURE 3. Precision Summing Amplifier.

5

6

1

INA154

BUF634

2

3

V

O

R

L

–In

+In

(Low I

Q mode)

BUF634 inside feedback

loop contributes no error.

5

6

2

(V+)/2

INA154

V+

1

7

4

V+

Ground

Ground

3