Application Note 9823
Appendix B HI5662EVAL2 Evaluation Board Schematic Diagrams
+5V A
+5V A
(Continued)
C38
0.1 μ F
+ C37
10 μ F
R10
1
C26
0.1 μ F
4.99K
7
C34
4
8
D1
ICL8069CCBA
1.2V
3
2
NC
+
-
V+
V-
4
8
NC
NC
5
6
U5
HFA1109IB
R19
0
C58
0.1 μ F
2.5V
+
EXT V REF
C60
10 μ F
0.1 μ F
R12
249
VR1
3(CW)
C30
0.1 μ F
R11
499
EXT
V REF
-5V A
1.0K
2
1(CCW)
EXT
V REF
FIGURE 18. EXTERNAL REFERENCE VOLTAGE GENERATION CIRCUIT
+5V D
+
CLK IN
J3
C39
0.1 μ F
C40
0.1 μ F
U7
13
AC04
C42
10 μ F
12
C41
0.1 μ F
U7
1
14
2
CLK1
R18
56.2
7
AC04
(CLK)
+5V D
VR2
1(CCW)
2
L1
1.5 μ H
U7
5
6
AC04
CLK3
(CLK)
1.0K
3(CW)
U7
C44
0.1 μ F
R21
100
C43
0.1 μ F
3
4
AC04
U7
3-10
11
U7
9
FIGURE 19. SAMPLE CLOCK DRIVER CIRCUIT
10
AC04
8
AC04
CLK4
(CLK)
CLK2
(CLK)
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