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参数资料
| 型号： | LM185WG-2.5/883/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, CDSO10 |
| 封装： | ROHS COMPLIANT, CERAMIC, SOIC-10 |
| 文件页数： | 19/19页 |
| 文件大小： | 488K |
| 代理商： | LM185WG-2.5/883/NOPB |
Micropower Thermocouple Cold Junction Compensator
551906
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.
Seebeck
Voltage
Thermocouple
Co-
R1
R2
Across R1
Across R2
Type
efficient
(
Ω)
(
Ω)
@25°C
(mV)
(μV/°C)
(mV)
J
52.3
523 1.24k
15.60
14.32
T
42.8
432
1k
12.77
11.78
K
40.8
412
953Ω
12.17
11.17
S
6.4
63.4
150Ω
1.908
1.766
Typical supply current 50
μA
Improving Regulation of Adjstable Regulators
551907
9
www.national.com
LM185-2.5/LM285-2.5/LM385-2.5
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