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參數(shù)資料
| 型號： | LM385Z-2.5#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PBCY3 |
| 封裝： | PLASTIC, TO-226, TO-92, 3 PIN |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 145K |
| 代理商： | LM385Z-2.5#PBF |
1
LM185-2.5/
LM285-2.5/LM385-2.5
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
TYPICAL APPLICATIO
U
Micropower Voltage
Reference
s
Portable Meter References
s
Portable Test Instruments
s
Battery-Operated Systems
s
Panel Meters
s
Current Loop Instrumentation
s
20
A to 20mA Operating Range
s
Guaranteed 1% Initial Voltage Tolerance
s
Guaranteed 1
Dynamic Impedance
s
Very Low Power Consumption
The LM185-2.5 is a two-terminal band gap reference
diode that has been designed for applications which
require precision performance with micropower opera-
tion. The device provides guaranteed operation specifica-
tions at currents as low as 20
A. The nominal voltage is
2.5V with both 1% and 2% tolerances available. Some
additional features are: maximum dynamic impedance of
1
, low noise and excellent stability over time and tem-
perature. The advanced design, processing and testing
techniques make Linear’s LM185-2.5 a superior choice
over previous designs. A circuit for cold junction compen-
sation of a thermocouple is shown below.
For applications requiring guaranteed temperature drift,
see the LT1034 data sheet.
REVERSE CURRENT (mA)
0
OUTPUT
VOLTAGE
CHANGE
(mV)
4
8
12
16
0.01
1
10
100
LM185-2.5 TA02
–4
0.1
–55
°C ≤ TA ≤ +125°C
Reverse Voltage Change
Thermocouple Cold Junction Compensator
RSET
2k
450
VIN
10k ADJUST
FOR 12.17mV
AT 25
°C
ACROSS 450
V–
16k
950
LM385-2.5
100k W.W.
ZERO
1M
2 MERCURY
CELLS 2.6V
METER
+
–
TYPE K
LM185-2.5 TA01
IQ ≈ 50A
LM334
, LTC and LT are registered trademarks of Linear Technology Corporation.
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