參數(shù)資料
型號(hào): LM285AYZ-1.2
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.2 V, PBCY3
封裝: PLASTIC, TO-92, 3 PIN
文件頁(yè)數(shù): 9/11頁(yè)
文件大?。?/td> 268K
代理商: LM285AYZ-1.2
Typical Applications (Continued)
METER THERMOMETERS
0C100C Thermometer
DS005518-28
Calibration
1. Short LM385-1.2, adjust R3 for IOUT= temp at 1 A/K
2. Remove short, adjust R2 for correct reading in centigrade
IQ at 1.3V500 A
IQ at 1.6V2.4 mA
Lower Power Thermometer
DS005518-29
*2N3638 or 2N2907 select for inverse HFE 5
Select for operation at 1.3V
IQ 600 A to 900 A
0F50F Thermometer
DS005518-30
Calibration
1. Short LM385-1.2, adjust R3 for IOUT= temp at 1.8 A/K
2. Remove short, adjust R2 for correct reading in F
Micropower Thermocouple Cold Junction
Compensator
DS005518-31
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
(
)()
Across R1
Across R2
(V/C)
@ 25C
(mV)
J
52.3
523 1.24k
15.60
14.32
T
42.8
432
1k
12.77
11.78
K
40.8
412 953
12.17
11.17
S
6.4
63.4 150
1.908
1.766
Typical supply current 50 A
LM185-1.2/LM285-1.2/LM385-1.2
www.national.com
7
相關(guān)PDF資料
PDF描述
LM385AXZ-1.2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.2 V, PBCY3
LM385AM-1.2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.2 V, PDSO8
LM385AYM-1.2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.2 V, PDSO8
LM285LPR-1-2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PBCY3
LM385PS-1-2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8
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