LT1009 Datasheet, PDF (3/8 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUITS

LT1009
2.5-V INTEGRATED REFERENCE CIRCUITS
SLVS013G – MAY 1987 – REVISED NOVEMBER 1999
electrical characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
TA†
LT1009C
LT1009I
UNIT
MIN TYP MAX MIN TYP MAX
VZ
Reference voltage
VF
Forward voltage
Adjustment range
Change in
∆VZ(temp) reference voltage
with temperature
D package
LP package
IZ = 1 mA _{D package}
LP package
IF = 2 mA
IZ = 1 mA,
VADJ = GND to VZ
IZ = 1 mA,
VADJ = 0.6 V to VZ – 0.6 V
D package
LP package
2.49 2.5 2.51 2.49 2.5 2.51
25°C
2.495 2.5 2.505 2.495 2.5 2.505
V
2.485
2.515 2.475
2.525
Full range
2.491
2.509 2.48
2.52
25°C
0.4
1 0.4
1V
125
125
25°C
mV
45
45
Full range
5
15
mV
4
15
Average
α_VZ
temperature
coefficient of
reference voltage‡
0°C to 70°C
– 40°C to 85°C
15 25
30
ppm/°C
20
Change in
∆VZ
reference voltage IZ = 400 µA to 10 mA
with current
25°C
Full range
2.6 10
12
2.6
6
mV
10
Long-term change
∆VZ/∆t in reference
voltage
IZ = 1 mA
25°C
20
20
ppm/khr
zz
Reference
impedance
IZ = 1 mA
25°C
Full range
0.3
1
1.4
0.3
1
Ω
1.4
† _{Full range is 0°C to 70°C for the LT1009C and – 40°C to 85°C for the LT1009I.}
‡ _{The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature}
range.
electrical characteristics at T_A = 25°C
PARAMETER
TEST CONDITIONS
LT1009Y
UNIT
MIN TYP MAX
VZ
Reference voltage
IZ = 1 mA
2.49 2.5 2.51 V
VF
Forward voltage
IF = 2 mA
0.4
1V
Adjustment range
IZ = 1 mA, VADJ = GND to VZ
125
mV
IZ = 1 mA, VADJ = 0.6 V to VZ – 0.6 V
45
∆VZ(temp) Change in reference voltage with temperature
2.5
mV
α _VZ
Average temperature coefficient of
reference voltage‡
15
ppm/°C
∆VZ
Change in reference voltage with current
IZ = 400 µA to 10 mA
2.6
mV
∆VZ/∆t
Long-term change in reference voltage
IZ = 1 mA
20
ppm/khr
zz
Reference impedance
IZ = 1 mA
0.3
1W
‡ _{The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature}
range.
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