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LT1004 数据手册 - Linear Technology（凌力尔特）
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LT1004数据手册
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1
LT1004
Micropower Voltage
Reference
■
Guaranteed ±4mV Initial Accuracy LT1004-1.2
■
Guaranteed ±20mV Accuracy LT1004-2.5
■
Guaranteed 10µA Operating Current
■
Guaranteed Temperature Performance
■
Operates up to 20mA
■
Very Low Dynamic Impedance
The LT
®
1004 micropower voltage reference is a
2-terminal bandgap reference diode designed to provide
high accuracy and excellent temperature characteristics at
very low operating currents. Optimization of the key
parameters in the design, processing and testing of the
device results in accuracy specifications previously attain-
able only with selected units. Below is a distribution plot of
reference voltage for a typical lot of LT1004-1.2. Virtually
all of the units fall well within the prescribed limits of
±4mV.
The LT1004 is a pin-for-pin replacement for the
LM185/LM385 series of references with improved accu-
racy specifications. More important, the LT1004 is an
attractive device for use in systems where accuracy was
previously obtained at the expense of power consump-
tion
and trimming.
For a low drift micropower reference with guaranteed
temperature coefficient, see the LT1034 data sheet.
Typical Distribution of
Reference Voltage (LT1004-1.2)
Micropower Cold Junction Compensation for Thermocouples
■
Portable Meter References
■
Portable Test Instruments
■
Battery-Operated Systems
■
Current Loop Instrumentation
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
DESCRIPTIO
U
R1
100k
186Ω
3V
LITHIUM
1.8k
1004 TA01
*
5k AT 25°C
†
LT1004-1.2
1684Ω
THERMOCOUPLE
TYPE R1
J 233k
K 299k
T 300k
S 2.1M
*QUIESCENT CURRENT ≅ 15µA
†
YELLOW SPRINGS INST. CO.
PART #44007
COMPENSATES WITHIN
±1°C FROM 0°C TO 60°C
+
–
+
–
1.2325
1.233
1.2335
1.234
1.2345
1.235
1.2355
1.236
1.2365
1.237
1.2375
NUMBER OF PARTS
200
180
160
140
120
100
80
60
40
20
1004 TA02
1200 PARTS
T
A
= 25°C
, LTC and LT are registered trademarks of Linear Technology Corporation.
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