參數(shù)資料
型號： AMS9491AS
廠商： Advanced Monolithic Systems, Inc.
英文描述： 1.235V VOLTAGE REFERENCE
中文描述： 1.235V電壓基準
文件頁數(shù)： 4/7頁
文件大小： 75K
代理商： AMS9491AS
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS9491
TYPICAL APPLICATIONS
(Continued)
Centigrade Thermometer
Micropower* 10V Reference
AMS9491
V
+
V
-
R
R1
1k
V1
V2
LM334
90k
25k
27k
1.2k
2.3k
OUTPUT
1mV/° C
2.2k
1.5V
Calibration
1. Adjust R1 so that V1 = temp at 1mV/
°
K.
2. Adjust V2 to 273.2mV.
I
Q
for 1.3V to 1.6V battery voltage = 50
μ
A to 150
μ
A
150pF
AMS9491
3.5M
500k
22M
1M
7
4
6
3
2
-
+
V
IN
= 15V
I
Q
10V
LM4250C
8
*I
Q
20
μ
A standby current
Micropower Thermocouple Cold Junction Compensator
+
LM334
AMS9491
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
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
相關PDF資料
PDF描述
AMS9491BN 1.235V VOLTAGE REFERENCE
AMS9491BS 1.235V VOLTAGE REFERENCE
AMSOP-07 LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER
AMSOP-07C REC3-SR_DR/H1 Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 15V; Power: 3W; Low Cost 3W converter in DIP24 Package; 1kVDC Isolation; Regulated Output; UL Approved; Continuous Short Circuit Protection; Internal SMD design; 3 Pinout Options, 3 Case Styles.; Efficiency to 75%
AMSOP-07CP LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER
相關代理商/技術參數(shù)
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AMS9491B 制造商:ADMOS 制造商全稱:ADMOS 功能描述:1.235V VOLTAGE REFERENCE
AMS9491BN 制造商:ADMOS 制造商全稱:ADMOS 功能描述:1.235V VOLTAGE REFERENCE
AMS9491BS 制造商:ADMOS 制造商全稱:ADMOS 功能描述:1.235V VOLTAGE REFERENCE
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