參數資料
型號: AMS3100-1.2BM
廠商: Advanced Monolithic Systems, Inc.
英文描述: MICROPOWER VOLTAGE REFERENCE
中文描述: 微功耗電壓參考
文件頁數: 4/6頁
文件大小: 86K
代理商: AMS3100-1.2BM
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS3100-1.2
TYPICAL APPLICATIONS
(Continued)
Micropower Thermocouple Cold Junction Compensator
Adjustment Procedure
1. Adjust TC ADJ pot until voltage across R1 equals Kelvin temperature
multiplied by the thermocouple Seebeck coefficient.
2. Adjust ZERO ADJ pot until voltage across R2 equals the thermocouple
Seebeck coefficient multiplied by 273.2.
Thermocouple Seebeck R1 R2 Voltage Voltage
Type Coefficient (
) (
) Across R1 Across R2
(mV/
°
C)
@
25
°
C (mV) (mV)
J 52.3 523
1.24k 15.60 14.32
T 42.8 432 1k 12.77 11.78
K 40.8 408 953
12.17 11.17
S 6.4 63.4 150
1.908 1.766
Typical supply current 50
μ
A
+
LM334
AMS3100-1.2
R1
R2
ZERO
ADJ 100k
1M
1%
5.1k
2k
1%
TC ADJ
500
METER
MERCURY
CELL
1.345V
+
-
V
+
V
-
R
THERMOCOUPLE
+
-
COLD JUNCTION
ISO THERMAL
WITH LM334
Precision 1
μ
A to 1mA Current Sources
7
4
3
2
+
-
LM312
6
AMS3100-1.2
R2
R1
100k
-30V
-1.5V TO -27V
C1
150pF
I
OUT
*
*I
OUT
=1.23V/R2
7
4
3
2
+
-
LM312
6
R2
R1
100k
30V
1.5V TO 27V
C1
150pF
I
OUT
*
AMS3100-1.2
相關PDF資料
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AMS3100-1.2CM MICROPOWER VOLTAGE REFERENCE
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