LM4040 Micrel Semiconductor, LM4040 Datasheet - Page 13

• Manufacturer Part Number: LM4040
• Description: Precision Micropower Shunt Voltage Reference
• Manufacturer: Micrel Semiconductor

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