Datasheet > AMS385-25CN

AMS385-25CN

更新时间： 2022-12-13 00:23:18

品牌	Logo	应用领域
ADMOS		二极管
页数	文件大小	规格书
8页	82K
描述
MICROPOWER VOLTAGE REFERENCE DIODE

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数据手册

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AMS385-25CN 数据手册

AMS285-2.5/AMS385-2.5

TYPICAL APPLICATIONS (Continued)

Micropower Thermocouple Cold Junction Compensator

V⁺

LM334

18k

Adjustment Procedure

V^-

TC ADJ

500

ZERO ADJ

100k

LITHIUM

1. Adjust TC ADJ pot until voltage across R1 equals Kelvin temperature

multiplied by the thermocouple Seebeck coefficient.

AMS385-2.5

2. Adjust ZERO ADJ pot until voltage across R2 equals the thermocouple

Seebeck coefficient multiplied by 273.2.

Thermocouple

Type

Seebeck

Coefficient

(mV/ °C)

Voltage

Across R2

(mV)

(W) (W) Across R1

@ 25°C (mV)

52.3

42.8

40.8

6.4

523 1.24k

432 1k

412 953W 12.17

63.4 150W 1.908

15.60

12.77

14.32

11.78

11.17

1.766

THERMOCOUPLE

METER

COLD JUNCTION

ISO THERMAL

WITH LM334

Typical supply current 50mA

Precision 1mA to 1mA Current Sources

AMS385-2.5

30V

AMS385-2.5

150pF

68k

LM312

I_OUT*

1.5V TO 27V

-1.5V TO -27V

-30V

*I_OUT=2.5V/R2

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

1 2 3 456 7 8

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