LM185BYH-1.2 datasheet(7/11 Pages) NSC

No de pièce	LM185BYH-1.2

Description	Micropower Voltage Reference Diode

Download	11 Pages

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Fabricant	NSC [National Semiconductor (TI)]

Site Internet	http://www.national.com

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Typical Applications (Continued)

METER THERMOMETERS

0˚C−100˚C Thermometer

00551828

Calibration

1. Short LM385-1.2, adjust R3 for IOUT= temp at 1µA/˚K

2. Remove short, adjust R2 for correct reading in centigrade

†IQ at 1.3V.500µA

IQ at 1.6V.2.4mA

Lower Power Thermometer

00551829

*2N3638 or 2N2907 select for inverse HFE . 5

†Select for operation at 1.3V

‡IQ . 600µA to 900µA

0˚F−50˚F Thermometer

00551830

Calibration

1. Short LM385-1.2, adjust R3 for IOUT= temp at 1.8µA/˚K

2. Remove short, adjust R2 for correct reading in ˚F

Micropower Thermocouple Cold Junction

Compensator

00551831

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

Type

Coefficient (

Ω)(Ω) Across

R1

Across

R2

(µV/˚C)

@ 25˚C

(mV)

J

52.3

5231.24k

15.60

14.32

T

42.8

432 1k

12.77

11.78

K

40.8

412953

Ω

12.17

11.17

S

6.4

63.4150

Ω

1.908

1.766

Typical supply current 50µA

www.national.com

7

Numéro de pièce similaire - LM185BYH-1.2

Fabricant	No de pièce	Fiches technique	Description
National Semiconductor ...	LM185BYH-1.2	265Kb / 10P	Micropower Voltage Reference Diode
National Semiconductor ...	LM185BYH-1.2	293Kb / 10P	Micropower Voltage Reference Diode
Texas Instruments	LM185BYH-1.2	1Mb / 23P	[Old version datasheet] LM185-1.2-N/LM285-1.2-N/LM385-1.2-N Micropower Voltage Reference Diode
	LM185BYH-1.2-SMD	726Kb / 13P	[Old version datasheet] LM185-1.2QML Micropower Voltage Reference Diode
	LM185BYH-1.2/NOPB	1Mb / 23P	[Old version datasheet] LM185-1.2-N/LM285-1.2-N/LM385-1.2-N Micropower Voltage Reference Diode

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Description similaire - LM185BYH-1.2

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Analog Microelectronics	AME41-4096	63Kb / 8P	Micropower Voltage Reference Diode
Calogic, LLC	CLM285-25	30Kb / 3P	Micropower Voltage Reference Diode
Texas Instruments	LM185-1.2QML	541Kb / 18P	[Old version datasheet] Micropower Voltage Reference Diode
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Advanced Monolithic Sys...	AMS285-12	88Kb / 8P	MICROPOWER VOLTAGE REFERENCE DIODE
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LM185BYH-1.2 Fiches technique(PDF) 7 Page - National Semiconductor (TI)

LM185BYH-1.2 Fiches technique(HTML) 7 Page - National Semiconductor (TI)

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