LT1004 Datasheet, PDF (8/13 Pages) Texas Instruments – MICROPOWER INTEGRATED VOLTAGE REFERENCES

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022H – JANUARY 1989 – REVISED JULY 1999
TYPICAL CHARACTERISTICS^†
LT1004x-2.5
REFERENCE IMPEDANCE
vs
1000
REFERENCE CURRENT
ÎÎÎÎÎÎÎ _{f = 25 Hz}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TA = –55°C to 125°C
100
LT1004x-2.5
NOISE VOLTAGE
vs
FREQUENCY
ÎÎÎÎÎÎÎÎÎÎ ¹⁴⁰⁰
1200
IZ = 100 µA
TA = 25°C
1000
800
10
600
400
1
200
0.1
0.01
0.1
1
10
100
IZ – Reference Current – mA
Figure 12
TL1004x-2.5
FILTERED OUTPUT NOISE VOLTAGE
vs
CUTOFF FREQUENCY
ÎÎÎÎÎÎÎÎÎÎ 120
IZ = 100 µA
TA = 25°C
100
80
100 µA
R
ÎÎÎÎÎÎÎÎÎÎ RC Low Pass
60
C
40
0
10
100
1k
10 k
100 k
f – Frequency – Hz
Figure 13
LT1004x-2.5
TRANSIENT RESPONSE
4
3
Output
2
24 kΩ
1
VI
VO
0
20
0
0.1
1
10
Cutoff Frequency – kHz
Figure 14
5
Input
0
100
0
100
500
t – Time – µs
Figure 15
†Data _{at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.}
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