LT1004 Datasheet, PDF (4/13 Pages) Texas Instruments – MICROPOWER INTEGRATED VOLTAGE REFERENCES

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022H – JANUARY 1989 – REVISED JULY 1999
electrical characteristics, T_A = 25°C
PARAMETER
TEST
CONDITIONS
LT1004Y-1.2
MIN TYP MAX
LT1004Y-2.5
UNIT
MIN TYP MAX
VZ
Reference voltage
IZ = 100 µA
1.231 1.235 1.239 2.48 2.5 2.52 V
a_VZ
Average temperature coefficient
of reference voltage†
IZ = 10 µA
IZ = 20 µA
20
ppm/°C
20
∆VZ/∆t Long-term change in reference voltage
IZ = 100 µA
20
20
ppm/khr
IZ(min) Minimum reference current
8
12
µA
zz
Reference impedance
IZ = 100 µA
0.2 0.6
0.2 0.6 Ω
Vn
Broadband noise voltage
IZ = 100 µA,
f = 10 Hz to 10 kHz
60
120
µV
† _{The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature}
range.
TYPICAL CHARACTERISTICS
Table of Graphs
GRAPH TITLE
LT1004x-1.2
Reverse current vs Reverse voltage
Reference-voltage change vs Reverse current
Forward voltage vs Forward current
Reference voltage vs Free-air temperature
Reference impedance vs Reference current
Noise voltage vs Frequency
Filtered output noise voltage vs Cutoff frequency
LT1004x-2.5
Transient response
Reverse current vs Reverse voltage
Forward voltage vs Forward current
Reference voltage vs Free-air temperature
Reference impedance vs Reference current
Noise voltage vs Frequency
Filtered output noise voltage vs Cutoff frequency
Transient response
FIGURE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
4
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265