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Micropower Voltage Reference
Typical Applications
1.235V Reference
VIN
3k
OUT
AS1004-1.2
2.5V Reference
VIN
100 k
OUT
AS1004-2.5
AS1004
Low Noise Reference
VIN
100 k
22 Ω
AS1004-2.5
OUT
50 µF
Figure 15
Figure 16
Variable Output
Regulator
VIN
LM317
VIN
VOUT
ADJ
0.1 µF
200 Ω
+
OUT
5k
AS1004-2.5
R ≤ V-– 1V
0.015 mA
V-
10 µF
Figure 18
Lead Acid Low Battery Detector
86.7 k
12 V
500 k
LO = Battery Low
+
–
500 k
AS1004-1.2
150 pF
Figure 17
High Stability 5V Regulator
VIN ≥ 8 V
LM338
VIN
VOUT
ADJ
+
5 V OUT
976 Ω, 1%
22 µF
AS1004-2.5
324 Ω, 1%
Figure 19
Micropower 10V Reference
VIN = 12 V to 20 V
1M
7
3+
6
2
LM4250
–
8
4 22 M
3.5 M
150 pF
AS1004-1.2
500 k
Figure 20
ASTEC Semiconductor
Figure 21
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