AD1582 Analog Devices, AD1582 Datasheet - Page 7

• Manufacturer Part Number: AD1582
• Description: 2.5V Micropower, Precisions Series Mode Voltage References
• Manufacturer: Analog Devices

PARAMETER DEFINITION
Temperature Coefficient (TCV
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:
Line Regulation (∆V
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 (∆V
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 Ω of dc output resistance.
Long Term Stability (∆V
Typical shift of output voltage at 25 C on a sample of parts
subjected to operation life test of 1000 hours at 125 C:
Where:
V
V
V
V
V
O
O
O
O
O
(25 C) = V
(T
(T
(t
(t
0
1
1
2
) = V
) = V
) = V
) = V
TCV ppm C
O
O
O
O
O
at 25 C at time 0.
at 25 C after 1000 hours operation at 125 C.
∆
∆
[
at temperature1.
at temperature2.
O
V
V ppm
at 25 C.
O
O
[
=
/
°
O
V t
O
/∆V
O
/∆I
]
]
( )
=
O
=
0
LOAD
IN
)
V t
V
)
−
O
O
V t
V T
( )
(
)
O
V t
O
25
0
O
( )
( )
O
°
)
1
−
( )
C
2
V t
0
)
−
O
×
V T
( )
(
1
T
O
2
( )
×
−
1
10
T
1
6
)
×
10
6
Thermal Hysteresis (V
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:
Operating Temperature
This is defined as the temperature extremes at which the device
will still function. Parts may deviate from their specified perfor-
mance outside the specified temperature range.
V
V
–40 C to +85 C and back to +25 C.
O
O_TC
(25 C) = V
AD1582/AD1583/AD1584/AD1585
= V
V
V
O
O HYS
O HYS
at 25 C after temperature cycle at +25 C to
_
_
O
at 25 C.
[ ]
=
ppm
V
O
O_HYS
(
25
=
V
o
)
C
O
)
(
25
V
−
V
O
°
C
O TC
(
25
_
)
−
°
C
V
O TC
)
_
×
10
6