LT1004-12 Datasheet, PDF (12/20 Pages) Texas Instruments – MICROPOWER INTEGRATED VOLTAGE REFERENCES

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022J – JANUARY 1989 – REVISED AUGUST 2003
APPLICATION INFORMATION
5V
50 kΩ
2.5 V
LT1004-2.5
Figure 22. 2.5-V Reference
VI ≥ 8 V
10 µF
IN
+
LT1084
OUT
ADJ
+
LT1004-2.5
10 µF
5V
301 Ω
1%
100 Ω
1%
Figure 23. High-Stability 5-V Regulator
15 V
2 kΩ^†
250 kΩ
VCC+ ≥ 5 V
250 kΩ
Output
LT1004-1.2
R1
(see Note A)
–
TLE2027
+
IO (see Note A) _{–5 V}
† _{May be increased for small output currents}
NOTE A:
R1 ≈
IO
2V
+ 10
µA
,
IO
=
1.235 V
R1
Figure 24. Ground-Referenced Current Source
Input
2N3904
200 kΩ _LT1004-1.2
60 kΩ
VCC– ≤ –5 V
Figure 25. Amplifier With Constant Gain
Over Temperature
1.5 V (see Note A)
3 kΩ
1.235 V
LT1004-1.2
NOTE A: Output regulates down to 1.285 V for IO = 0.
Figure 26. 1.2-V Reference From 1.5-V Battery
V+
R
LM334
6.8 kΩ
LT1004-1.2
R ≤ 5 kΩ
IO ≈
1.3 V
R
Figure 27. Terminal Current Source
With Low Temperature Coefficient
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