LT1007 Datasheet, PDF (23/24 Pages) Linear Technology – Low Noise, High Speed Precision Operational Amplifiers

LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
7.5 V
LT1009
5 kΩ
3
+7
2.5 V
6
LT1007
2– ₄
–7.5 V
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
Reference Out
350 Ω
Bridge
7.5 V
2
+7
6
LT1007
3– ₄
30.1
kΩ^†
10 kΩ
Zero
Trim
15 V
3
+7
6
LT1007
2– ₄
–15 V
1 µF
0 to 10 V
Output
30.1 kΩ^†
† _{RN60C Film Resistors}
Gain
Trim
50 kΩ 499 Ω^†
–7.5 V
The LT1007 is capable of providing excitation current
directly to bias the 350-Ω bridge at 5 V. With only 5 V
across the bridge (as opposed to the usual 10 V) total
power dissipation and bridge warm-up drift is reduced.
The bridge output signal is halved, but the LT1007 can
amplify the reduced signal accurately.
Figure 50. Strain Gauge Signal Conditioner With Bridge Excitation
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