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LM4040 Datasheet(PDF) 13 Page - Micrel Semiconductor

Part # LM4040
Description  Precision Micropower Shunt Voltage Reference
PDF  16 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

LM4040 Datasheet(HTML) 13 Page - Micrel Semiconductor

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January 2000
13
LM4040/4041
LM4040/4041
Micrel
Figure 8. Bidirectional Adjustable Clamp
±2.4 to ±6V
VIN
R1
I
LM4041-ADJ
D2
1N457
R3
1M
R2
330k
VOUT
LM4041-ADJ
FB
+
–
FB –
+
D1
1N457
R4
330k
VIN
R1
R2
390k
R3
500k
FB
+
–
LM4041-ADJ
D1
1N457
R4
390k
D2
1N457
LM4041-ADJ
FB
+
–
I
VOUT
Figure 7. Bidirectional Adjustable Clamp
±18V to ±2.4V
0 to 20mA
R1
390
Ω
± 2%
1N4002
D2
LM4041-ADJ
+
–
FB
λ
D1*
1
2
3
6
5
4
4N28
N.C.
ITHRESHOLD =
+
= 3.2mA
1.24V
R1
5µA
4N28 GAIN
N.C.
R2
470k
CMOS
+ 5V
Figure 9. Floating Current Detector
D1
1N457
R3
510k
LM4041-ADJ
D2
1N457
VOUT
R2
510k
VIN
R1
I
+
FB
FB
LM4041-ADJ
+
–
–
Figure 6. Bidirectional Clamp
±2.4V
Figure 5. Fast Positive Clamp
2.4V +
∆V
D1
VIN
VOUT
D1
1N914
D2
1N914
R3
240k
R4
240k
R1
I
R2
50µA
LM4041-ADJ
FB
+
–



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