Datasheet

ADR510
Rev. B | Page 7 of 12
PARAMETER DEFINITIONS
TEMPERATURE COEFFICIENT
This is the change of output voltage with respect to the
operating temperature changes, normalized by the output
voltage at 25°C. This parameter is expressed in parts per
million/degrees Celsius (ppm/°C) and can be determined with
the following equation:
6
10
)()(
)()(
C][ppm/ ×
−×°
−
=°
T1T2C25V
T1VT2V
TCV
OUT
OUTOUT
OUT
(1)
where:
V
OUT
(25°C) is the output voltage at 25°C.
V
OUT
(T
1
) is the output voltage at Temperature 1.
V
OUT
(T
2
) is the output voltage at Temperature 2.
THERMAL HYSTERESIS
Thermal hysteresis is the change of output voltage after the
device is cycled through the temperature from 25°C to 0°C to
85°C and back to 25°C.
TCOUTOUTHYSOUT
VC25VV
__
)( −°
=
6
_
_
10
)(
)(
[ppm] ×
°
−°
=
C25V
VC25V
V
OUT
TCOUTOUT
HYSOUT
(2)
where:
V
OUT
(25°C) is the output voltage at 25°C.
V
OUT_TC
is the output voltage at 25°C after temperature cycle at
+25°C to −40°C to +85°C and back to +25°C.