LT1028_15 Datasheet, PDF (16/28 Pages) Linear Technology – Ultralow Noise Precision High Speed Op Amps

LT1028/LT1128
Typical Applications
Strain Gauge Signal Conditioner with Bridge Excitation
15V
LT1021-5
3
5.0V
+
7
LT1128
2_–
4
–15V
350Ω
BRIDGE
15V
3_– 7
6
LT1028
2₊
4
330Ω
6
REFERENCE
OUTPUT
15V
3_– ⁷
301k*
10k
ZERO
TRIM
LT1028
2_{+ 4}
–15V
*RN60C FILM RESISTORS
330Ω
6
0V TO 10V
OUTPUT
1µF 30.1k*
5k
GAIN
TRIM
49.9Ω*
–15V
THE LT1028’s NOISE CONTRIBUTION IS NEGLIGIBLE
COMPARED TO THE BRIDGE NOISE.
1028 TA03
Low Noise Voltage Regulator
28V
1k
LT1021-10
+
LT1028
–
28V 10
+
330Ω
LT317A
10
121Ω
2.3k
PROVIDES PRE-REG
AND CURRENT
LIMITING
2N6387
1000pF
20V OUTPUT
2k
2k
1028 TA04
16
For more information www.linear.com/LT1028
1028fc