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參數(shù)資料
| 型號(hào)： | ADR380ART-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Precision Low-Drift 2.048 V/2.500 V SOT-23 Voltage References |
| 中文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.048 V, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 316K |
| 代理商： | ADR380ART-REEL |
REV. A
ADR380/ADR381
–5–
PARAMETER DEFINITIONS
Temperature Coefficient
The change of output voltage over the operating temperature
change and normalized by the output voltage at 25
°
C, expressed
in ppm/
°
C. The equation follows:
TCV
ppm C
V T
(
25
V T
T
)
×
(
V
C
°
T
O
O
/
–
–
[
]
=
)
×
2
1
2
1
6
10
where:
V
O
(25
°
C
)
=
V
O
at 25
°
C
.
V
O
(
T
1
)
=
V
O
at Temperature 1
.
V
O
(
T
2
)
=
V
O
at Temperature 2
.
Line Regulation
The change in output voltage due to a specified change in input
voltage. It includes the effects of self-heating. Line regulation is
expressed in either percent per volt, parts-per-million per volt,
or microvolts per volt change in input voltage.
Load Regulation
The change in output voltage due to a specified change in load
current. It includes the effects of self-heating. Load regulation is
expressed in either microvolts per milliampere, parts-per-
million per milliampere, or ohms of dc output resistance.
Long-Term Stability
A typical shift in output voltage over 1,000 hours at a controlled
temperature. The graphs TPC 24 and TPC 25 show a sample
of parts measured at different intervals in a controlled environ-
ment of 50
°
C for 1,000 hours.
( )
( )
V
V
t
–V
t
V
ppm
V
t
V
–V
t
( )
0
t
O
O
O
O
O
O
O
=
( )
( )
1
[
]
=
×
0
1
0
6
10
where:
V
O
(
t
0
)
=
V
O
at
Time 0.
V
O
(
t
1
) = V
O
after 1,000 hours’ operation at a controlled
temperature.
Note that 50
°
C was chosen since most applications we have
experienced run at a higher temperature than 25
°
C.
Thermal Hysteresis
The change of output voltage after the device is cycled through
temperature from +25
°
C to –40
°
C to +85
°
C and back to +25
°
C.
This is a typical value from a sample of parts put through
such a cycle.
(
(
V
V
C
°
V
V
ppm
V
C
°
(
V
C
°
V
O_HYS
O
O_TC
O_HYS
O
O_TC
)
O
=
)
)
[
]
=
×
25
25
25
10
6
–
–
where:
V
O
(25
°
C
) = V
O
at 25
°
C.
V
O
_
TC
= V
O
at 25
°
C after temperature cycle at +25
°
C to –40
°
C
to +85
°
C and back to +25
°
C.
Typical Performance Characteristics
TEMPERATURE ( C)
2.042
–40
V
O
2.044
2.046
2.048
2.050
2.052
2.054
–15
10
35
60
85
SAMPLE 1
SAMPLE 2
SAMPLE 3
TPC 1. ADR380 Output Voltage vs. Temperature
TEMPERATURE( C)
2.494
–40
V
O
2.496
2.498
2.500
2.502
2.504
2.506
–15
10
35
60
85
SAMPLE 1
SAMPLE 2
SAMPLE 3
TPC 2. ADR381 Output Voltage vs. Temperature
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