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| LT1009M Datasheet, PDF (4/10 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUIT | |||
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LT1009M
SLVS925 â APRIL 2009 ..................................................................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS
at specified free-air temperature
PARAMETER
TEST CONDITIONS
VZ
VF
ÎVZ(temp)
αVZ
ÎVZ
ÎVZ/Ît
ZZ
Reference voltage
IZ = 1 mA
Forward voltage
Adjustment range
Change in reference
voltage with temperature
Average temperature
coefficient of reference
voltage (1)
Change in reference
voltage with current
Long-term change in
reference voltage
IF = 2 mA
IZ = 1 mA,
VADJ = GND to VZ
IZ = 1 mA,
VADJ = 0.6 V to VZ â 0.6 V
IZ = 1 mA, VADJ = open
IZ = 400 µA to 10 mA
IZ = 1 mA
Reference impedance
IZ = 1 mA
TA
25°C
Full range
25°C
25°C
Full range
Full range
25°C
Full range
25°C
25°C
Full range
LT1009M
MIN TYP
2.49
2.5
2.46
0.4
125
45
MAX
2.51
2.535
1
UNIT
V
V
mV
15 mV
20
35 ppm/ °C
6
10
mV
12
20
ppm/ khr
0.6
1.6
â¦
1.8
(1) The deviation parameter VZ(dev) is defined as the difference between the maximum and minimum values obtained over the
recommended operating temperature range, measured at IZ = 1 mA. The average full-range temperature coefficient of the reference
voltage (αVZ) is defined as:
|aVZ|
ppm
°C
=
VZ(dev)
à 106
VZ at 25°C
DTA
Maximum VZ
Minimum VZ
DTA
VZ(dev) at IZ = 1 mA
αVZ can be positive or negative, depending upon whether the minimum VZ or maximum VZ, respectively, occurs at the lower
temperature.
4
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Copyright © 2009, Texas Instruments Incorporated
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