Datasheet
AD9777
Rev. C | Page 54 of 60
02706-108
1
3
5
7
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21
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29
31
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35
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39
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4
6
8
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DATA-B
RIBBON
J2
21 345678910
R1 R2 R3 R4 R5 R6 R7 R8 R9
21 345678910
R1 R2 R3 R4 R5 R6 R7 R8 R9
RCOM
RCOM
RP10
DNP
RP11
50Ω
21 34567891021 345678910
R1 R2 R3 R4 R5 R6 R7 R8 R9R1 R2 R3 R4 R5 R6 R7 R8 R9
RCOM
RCOM
RP9
DNP
RP12
50Ω
BD15
BD14
BD13
BD12
BD11
BD10
BD09
BD08
BD07
BD06
BD05
BD04
BD03
BD02
BD01
BD00
116
215
314
413
512
611
710
89
116
215
314
413
512
611
710
89
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP3 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
RP4 22Ω
R21
DNP
CLKVDD
CGND; 5
CLKVDD; 8
ACLKX
R13
120Ω
R4
120Ω
R18
200Ω
R14
200Ω
RC0805
MC100EPT22
RC0805
RC0805
RC0805
C43
4.7µF
6.3V
DVDD
C51
0.1µF
C44
4.7µF
6.3V
DVDD
DGND; 7
DVDD; 14
U5
74AC14
1
2
DGND; 7
DVDD; 14
U5
74AC14
12
13
DGND; 7
DVDD; 14
U5
74AC14
43
DGND; 7
DVDD; 14
U5
74AC14
10
11
DGND; 7
DVDD; 14
U5
74AC14
65
DGND; 7
DVDD; 14
U5
74AC14
89
1
2
3
4
5
6
SPI PORT
P1
SPCSB
SPCLK
SPSDI
SPSDO
DGND; 7
DVDD; 14
U6
74AC14
1
2
DGND; 7
DVDD; 14
U6
74AC14
13
12
DGND; 7
DVDD; 14
U6
74AC14
3
4
DGND; 7
DVDD; 14
U6
74AC14
11
10
DGND; 7
DVDD; 14
U6
74AC14
5
6
DGND; 7
DVDD; 14
U6
74AC14
9
8
R50
9kΩ
R48
9kΩ
R45
9kΩ
RC0805
RC0805
RC0805
ACASE
CC805
ACASE
C50
0.1µF
CC805
C60
0.1µF
C49
4.7µF
6.3V
CLKDD
ACASE
CC805
4
3
6
U8
2
1
7
U8
CC805
C47
1nF
CC805
JP41
JP42
C46
0.1µF
R20
DNP
RC0805
R22
DNP
R24
DNP
RC0805
RC0805
RC0805
CC805
C48
1nF
CLKVDD; 8
CGND; 5
MC100EPT22
CLKVDD
CLKVDD
CLKN
CLKP
+
c
c
c
c
c
c
c
+ +
R19
100Ω
Figure 108. AD9777 Evaluation Board Input (B Channel) and SPI Port Circuitry