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LT1031 数据表(PDF) 9 Page - Linear Technology

部件名 LT1031
功能描述  Precision 10V Reference
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1031 数据表(HTML) 9 Page - Linear Technology

Back Button LT1031 Datasheet HTML 4Page - Linear Technology LT1031 Datasheet HTML 5Page - Linear Technology LT1031 Datasheet HTML 6Page - Linear Technology LT1031 Datasheet HTML 7Page - Linear Technology LT1031 Datasheet HTML 8Page - Linear Technology LT1031 Datasheet HTML 9Page - Linear Technology LT1031 Datasheet HTML 10Page - Linear Technology LT1031 Datasheet HTML 11Page - Linear Technology LT1031 Datasheet HTML 12Page - Linear Technology  
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9
LT1031/LH0070
1031fb
Strain Gauge Conditioner
for 350
Ω Bridge
Ultralinear Platinum Temperature Sensor*
APPLICATIO CIRCUITS
+
LT1031
GND
OUT
IN
20V
20V
–15V
–15V
2
3
7
4
6
VOUT = 100mV/°C
–50
°C ≤ T ≤ 150°C
R2*
5k
R14
5k
R12
1k
R15
10k
R13
24.3k
R10
182k
1%
R11
6.65M
1%
R5
200k
1%
R6
619k
1%
R4
4.75k
1%
R7
392k
1%
RS
100
AT 0
°C
R1**
253k
R8
10M
R9
100k
R3**
5k
Rf**
654k
STANDARD INDUSTRIAL 100
Ω PLATINUM 4-WIRE SENSOR, ROSEMOUNT 78S,
OR EQUIVALENT.
α = 0.00385
TRIM R9 FOR VOUT = 0 AT 0°C
TRIM R12 FOR VOUT = 10V AT 100°C
TRIM R14 FOR VOUT = 5V AT 50°C
USE TRIM SEQUENCE AS SHOWN. TRIMS ARE NON-INTERACTIVE SO THAT ONLY ONE
TRIM SEQUENCE IS NORMALLY REQUIRED.
FEEDBACK LINEARIZES OUTPUT TO
±0.005°C FROM – 50°C TO 150°C
WIREWOUND RESISTORS WITH LOW TC
*
**
LT1031 • AC06
LT1001
R2
20k
R4
20k
R1
357
1/2W
357
1/2W
R6
2M
Ω*
R3
2M
R5
2M
350
Ω STRAIN
GUAGE BRIDGE**
LT1031 • AC05
5V
–5V
100pF
VOUT • 100
6
6
8
1
3
3
2
2
28mA
28.5mA
15V
–15V
LT1031
LT1012C
LM301A
GND
IN
OUT
+
THIS RESISTOR PROVIDES POSITIVE FEEDBACK TO THE BRIDGE TO ELIMINATE
LOADING EFFECT OF THE AMPLIFIER. EFFECTIVE ZIN OF AMPLIFIER STAGE IS
≥ 1MΩ. IF R2–R5 ARE CHANGED, SET R6 = R3
BRIDGE IS ULTRA LINEAR WHEN ALL LEGS ARE ACTIVE, TWO IN COMPRESSION
AND TWO IN TENSION, OR WHEN ONE SIDE IS ACTIVE WITH ONE COMPRESSED
AND ONE TENSIONED LEG
OFFSET AND DRIFT OF LM301A ARE VIRTUALLY ELIMINATED BY DIFERENTIAL
CONNECTION OF LT1012C
*
**


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