ADR130 Analog Devices, Inc., ADR130 Datasheet - Page 11

• Manufacturer Part Number: ADR130
• Description: Precision Series Sub-band Gap Voltage Reference
• Manufacturer: Analog Devices, Inc.

TERMINOLOGY
Temperature Coefficient
Temperature coefficient is the change of output voltage with
respect to the operating temperature change normalized by the
output voltage at 25°C. This parameter is expressed in ppm/°C
and is determined by
where:
V
V
V
Line Regulation
Line regulation is 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 %/V,
ppm/V, or μV/ΔV
Load Regulation
Load regulation is 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
mV/mA, ppm/mA, or dc output resistance (Ω).
O
O
O
(25°C) = V
(T
( T
TCV
1
2
) = V
) = V
O
O
O
[
ppm/
at Temperature 1.
at Temperature 2.
O
at 25°C.
°
IN
C
.
]
=
V
O
V
(
O
25
( )
T
°
2
C
)
−
×
V
(
T
O
2
( )
T
−
1
T
1
)
×
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6
Rev. 0 | Page 11 of 16
Long-Term Stability
Long-term stability is the typical shift of output voltage at 25°C
on a sample of parts subjected to a test of 1000 hours at 25°C.
where:
V
V
Thermal Hysteresis
Thermal hysteresis is the change of output voltage after the
device is cycled through temperatures from +25°C to −40°C to
+125°C, then back to +25°C. This is a typical value from a
sample of parts put through such a cycle.
where:
V
V
to +125°C, then back to +25°C.
O
O
O
OTC
(t
(t
(25°C) = V
0
1
) = V
) = V
= V
Δ
Δ
V
V
O
O
O
O
O
[
=
at 25°C after temperature cycle from +25°C to −40°C
ppm
at 25°C at Time 0.
at 25°C after 1000 hours operating at 25°C.
V
O
O
( )
at 25°C.
t
]
0
=
V
−
O
V
( )
O
t
V
0
( )
t
O
1
−
( )
t
V
0
O
( )
t
1
×
10
6
ADR130