Datasheet

AD8274
Rev. C | Page 13 of 16
CONFIGURATIONS
The AD8274 can be configured in several ways; see Figure 40 to Figure 47. Because these configurations rely on the internal, matched
resistors, all of these configurations have excellent gain accuracy and gain drift. Note that the AD8274 internal op amp is stable for noise
gains of 1.5 and higher, so the AD8274 should not be placed in a unity-gain follower configuration.
12kΩ
2
3
5
1
6
6kΩ
12kΩ 6kΩ
–IN
OUT
+IN
V
OUT
= ½ (V
IN+
− V
IN−
)
07362-012
Figure 40. Difference Amplifier, G = ½
6kΩ
3
2
1
6
12kΩ
6kΩ 12kΩ
–IN
OUT
+IN
5
07362-016
V
OUT
= 2 (V
IN+
− V
IN−
)
Figure 41. Difference Amplifier, G = 2
12kΩ
2
3
5
1
6
6kΩ
12kΩ
6kΩ
–IN
OUT
07362-013
V
OUT
= –½ V
IN
Figure 42. Inverting Amplifier, G = −½
6kΩ
2
1
5
3
6
12kΩ
6kΩ
12kΩ
–IN
OUT
V
OUT
= –2 V
IN
07362-017
Figure 43. Inverting Amplifier, G = −2
12kΩ
2
3
5
1
6
6kΩ
12kΩ 6kΩ
OUT
+IN
V
OUT
= ½ V
IN
07362-015
Figure 44. Noninverting Amplifier, G = ½
6kΩ
2
3
5
1
6
12kΩ
6kΩ 12kΩ
OUT
+IN
V
OUT
= 2 V
IN
07362-019
Figure 45. Noninverting Amplifier, G = 2
12kΩ
25
6
6kΩ
+
IN
OUT
3
1
12kΩ
6kΩ
07362-014
V
OUT
= 1½ V
IN
Figure 46. Noninverting Amplifier, G = 1.5
6kΩ
2
5
6
12kΩ
+IN
OUT
3
1
6kΩ
12kΩ
V
OUT
= 3 V
IN
07362-018
Figure 47. Noninverting Amplifier, G = 3