ADR381ART-REEL7 Analog Devices Inc, ADR381ART-REEL7 Datasheet - Page 10

• Manufacturer Part Number: ADR381ART-REEL7
• Description: VOLTAGE REFERENCE
• Manufacturer: Analog Devices Inc
• Series: ADR38r

Specifications of ADR381ART-REEL7

• Output Voltage: 2.5V
• Output Voltage Max: 2.5V
• Rohs Status: RoHS non-compliant
• Reference Type: Series
• Voltage - Output: 2.5V
• Tolerance: ±0.24%
• Temperature Coefficient: 25ppm/°C
• Voltage - Input: 2.8 ~ 18 V
• Number Of Channels: 1
• Current - Quiescent: 120µA
• Current - Output: 5mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
• Current - Cathode: -
• Other names: ADR381ART-REEL7; ADR381ART-REEL7TR

ADR380/ADR381
TERMINOLOGY
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:
where:
V
V
V
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.
OUT
OUT
OUT
TCV
(25°C) = V
(T
(T
1
2
) = V
) = V
OUT
[
OUT
OUT
ppm/
OUT
at Temperature 1.
at Temperature 2.
°
at 25°C.
] C
=
V
V
OUT
OUT
(25
(
T
2
°
)
C)
−
V
×
OUT
(
T
2
(
−
T
T
1
1
)
)
×
10
6
Rev. C | Page 10 of 16
Long-Term Stability
A typical shift in output voltage over 1000 hours at a controlled
temperature. Figure 24 and Figure 25 show a sample of parts
measured at different intervals in a controlled environment of
50°C for 1000 hours.
where:
V
V
temperature.
Note that 50°C was chosen because most applications 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.
where:
V
V
−40°C to +85°C and back to +25°C.
OUT
OUT
OUT
OUT_TC
V
V
Δ
Δ
(t
(t
(25°C) = V
OUT
OUT
V
V
0
1
) = V
) = V
= V
OUT
O
UT
_
_
HYS
HYS
OUT
[
=
OUT
OUT
ppm
V
[
=
at 25°C after a temperature cycle from +25°C to
ppm
OUT
V
OUT
at Time 0.
after 1000 hours of operation at a controlled
O
]
UT
=
(
at 25°C.
]
t
V
=
(25
0
OUT
V
)
−
OUT
°
C)
V
V
(
O
t
(
V
O
−
0
UT
25
OUT
UT
)
V
−
OUT
°
(
) C
t
(
V
(25
t
1
OUT
)
0
_
−
)
TC
V
°
C)
OUT
(
t
1
)
_
×
TC
10
×
6
10
6