参数资料
型号: ADR125
厂商: Analog Devices, Inc.
英文描述: Precision, Micropower LDO Voltage References in TSOT
中文描述: 精密,微功耗LDO电压参考采用TSOT
文件页数: 7/20页
文件大小: 484K
代理商: ADR125
ADR121/ADR125/ADR127
TERMINOLOGY
Temperature Coefficient
The change of output voltage with respect to operating
temperature change normalized by the output voltage at 25°C.
This parameter is expressed in ppm/°C and can be determined
by
( )
(
C
25
°
V
O
Rev. 0 | Page 7 of 20
[
]
( )
)
(
×
)
6
1
2
10
C
ppm/
×
=
°
T
T
V
V
TCV
O
O
O
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 the output due to a specified change in input
voltage. This parameter accounts for the effects of self-heating.
Line regulation is expressed in either percent per volt, parts-
per-million per volt, or microvolts per voltage changes in input
voltage.
Load Regulation
The change in output voltage due to a specified change in load
current. This parameter accounts for the effects of self-heating.
Load regulation is expressed in either microvolts per milliam-
pere, parts-per-million per milliampere, or ohms of dc output
resistance.
Long-Term Stability
Typical shift of output voltage at 25°C on a sample of parts
subjected to a test of 1000 hours at 25°C.
( )
( )
( )
( )
O
V
where:
V
O
(t
0
)
= V
O
at 25°C at Time 0.
V
O
(t
1
)
= V
O
at 25°C after 1000 hours operating at 25°C.
[
]
( )
6
10
ppm
×
=
Δ
V
=
Δ
O
O
O
O
O
V
V
V
V
V
Thermal Hysteresis
The change of output voltage after the device is cycled through
temperatures from +25°C to 40°C to +125°C and back to
+25°C. This is a typical value from a sample of parts put
through such a cycle.
where:
V
O
(25°C) = V
O
at 25°C.
V
OTC
= V
O
at 25°C after temperature cycle at +25°C to 40°C to
+125°C and back to +25°C.
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