Datasheet

Data Sheet ADR130
Rev. C | Page 11 of 16
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
[ ]
( ) (
)
( )
( )
6
10
C25
Cppm/ ×
−×°
−
=°
12
O
1
O
2
O
O
TTV
TV
TV
TCV
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
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/∆V
IN
.
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).
Long-Te rm Stabi lity
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.
( )
( )
1
O
0
OO
tVtVV −=∆
[ ]
(
)
( )
(
)
6
10
ppm ×
−
=
∆
0
O
1
O
0
O
O
t
V
t
Vt
V
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.
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
O
(25°C) = V
O
at 25°C.
V
OTC
= V
O
at 25°C after temperature cycle from +25°C to −40°C
to +125°C, then back to +25°C.