NB3x6x1xxG8DFNEVK
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11
Figure 11. Main Board Schematic (3 of 3)
C18
1uF
10V
1
2
TP14
2V5
1
2V5
C17
4.7uF
10V
1
2
C19
100nF
1
2
U8
NCP4688DSN25T1G, 2.5V
IN
1
OUT
5
GND
2
EN
3
NC
4
C16
1uF
10V
1
2
TP11
1V8
1
1V8
C14
4.7uF
10V
1
2
C15
100nF
1
2
U7
NCP4688DSN18T1G, 1.8V
IN
1
OUT
5
GND
2
EN
3
NC
4
USB_5V
C33
0.01uF
C32
0.1uF
C58
1uF
10V
1
2
TP21
3V3_FT
1
3V3_FT
3V3_FT
C59
4.7uF
10V
1
2
C57
100nF
1
2
NEAR DUT PIN
U9
NCP4688DSN33T1G, 3.3V
IN
1
OUT
5
GND
2
EN
3
NC
4
VTT
C24
0.1uF
C23
0.01uF
NEAR DUT PIN
C27
2.2uF
C34
0.01uF
NEAR DUT PIN
TP20
GND_F
1
TP28
GND
1
VDD_EXT
+
C53
22uF_NP
C51
0.1uF_NP
FB13
BEAD
TP1
GND_VDDO
1
FB5
BEAD
FB8
BEAD
FB3
BEAD
FB11
BEAD
J19
1
2
3
thick trace
thick trace
thick trace
GND_VDDO
C60
0.1uF
REF
GND_VDDO
FB10
BEAD
FB4
600
1
2
FB7
BEAD
FB6
BEAD
GND_VDDO
FB12
600
1
2
GND5
C28
0.01uF
+
C31
22uF
VDD_EXT
C29
0.1uF
VDD
R75
0E
1
2
C20
0.1uF
C21
0.01uF
NEAR DUT PIN
FB9_NP
600
1
2
C54
0.01uF
GND6
+
C55
22uF
VTT
C56
0.1uF
VTT1
R83
0E
1
2
C22
2.2uF
VDDO_EXT
VTT
GND4
VDDO_0
GND1
+
C41
22uF
VDDO_1
C26
2.2uF
GND3
VDDO_2
C30
0.1uF
GND2
+
C8
22uF
C10
0.01uF
VDDO_EXT1
VDDO_EXT
R57
0E
1
2
C9
0.1uF
C12
1uF
10V
1
2
TP3
3V3
1
3V3
C13
4.7uF
10V
1
2
C11
100nF
1
2
U6
NCP4688DSN33T1G, 3.3V
IN
1
OUT
5
GND
2
EN
3
NC
4
TP19
1
VTT
thick trace
REF
USB_5V
REF
VDDO_1
VDDO_1
GND
LVPECL (VTT reference) = VTT
LVPECL (Thevenin’s network) = GND
HCSL = GND
CML = VDDO_1
LVDS = FLOAT/ NO SHORT
VTT
VTT
GND
REF
VDDO_1
VDDO_EXT
