AD9912 Schematic Rev. A PDF

1
2
3
D
(1.8V)
5
4
1
4
3
5
2
6
1
4
DEFAULT: INSTALL R13, NOT R12
IF USING FILTER: REMOVE R13 & INSTALL BOXED ITEMS
OPTIONAL
(3.3V)
3
ETC1-1-13
C80
C36
VDD_DAC3_3 49
IOUT 50
IOUTB51
VSS_DACDEC52
VDD_DACDEC53
S354
S455
REFSELECT56
HOLDOVER57
RESET59
PWRDOWN58
IO_UPDATE60
CSB61
SDO62
DVDD_1
VDD_DAC3_1 46
(3.3V)
4
DAC_RSET 48
DVSS_2
VDD_DACCLK45
5
DVDD_2
44
6
DVSS_3
VSS_ISO43
7
VDD_DACCLK_NWELL
DVDD_3
VDD_FDBK 42
8
DVSS_4
41
9
S1
FDBK_INB40
FDBK_IN
10
S2
VSS_DRV_239
11
VDD_REF
OUT_CMOS38
12
REFA_IN
VDDX_DRV 37
13
REFA_INB
14
VDDX_REF
(1.8V)
REFB_IN
CLKMODESEL
LOOP_FILTER
VDD_SYSCLK_4
C11
C4
C2
C3
4.7PF
10PF
12PF
6.8PF
33
4
3
5
2
6
1
B
32
31
30
VSS_DRV_1
4.7PF
(1.8V)
SYSCLKB
VDD_SYSCLK_3
29
(1.8V)
28
SYSCLK
27
VDD_DIV
VDD_SYSCLK_2
26
(1.8V)
(1.8V)
25
24
(1.8V HC)
VDD_PFD_2
PFD_VRT
PFD_RSET
22
23
(1.8V)
(1.8V)
17
B
VDD_SYSCLK_1
OUTB
REFB_INB
C
47NH
(3.3V)
(1.8V)
34
21
16
L1
(1.8V)
OUT35
PFD_VRB
15
1.5PF
C10
27NH
6.8PF
C5
39NH
L3
VDD_DRV36
VDD_PFD_1
(3.3V)
3
20
(1.8V)
(3.3V)
N/C_2
(1.8V)
VDD_DAC3_2 47
19
(1.8V)
DVSS_1
N/C_1
(1.8V)
DVDD_IO
C12
12PF
L2
8.2PF
2
C28
10PF
C1
1
18
C
SDIO63
SCLK64
4.7PF
(3.3V)
D
A
A
AD9912 EVALUATION BOARD
A
1
2
3
4
1
2
3
4
74LVC14A
1
3
4
2
74LVC14A
D
D
1
2
3
4
5
6
7
8
9
1
2
10
11
12
C
13
14
SHIELD1
SHIELD
GND
D+
DVBUS
6
15
5
16
4
17
3
18
2
19
1
20
21
22
23
24
25
U3
26
B
1
2
3
4
NC1
VCC
NC2
NC4
NC3
SCL
VSS
SCA
8
27
7
28
6
PD5/FD13
PD4/FD12
PD6/FD14
PD3/FD11
PD7/FD15
PD2/FD10
GND1
PD1/FD9
CLKOUT
PD0/FD8
VCC1
WAKEUP
GND2
VCC7
U2
RDY0/SLRD
RESET
RDY1/SLWR
GND6
PA7/FLAGD/SLCS
AVCC
PA6/PKTEND
XTALOUT
XTALIN
PA5/FIFOADR1
AGND
PA4/FIFOADR0
PA3/WU2
VCC2
PA2/SLOE
DPLUS
DMINUS
PA1/INT1
GND3
PA0/INT0
VCC3
VCC6
GND
CTL2/FLAGC
IFCLK
CTL1/FLAGB
RESERVED
CTL0/FLAGA
SCL
GND5
SDA
VCC5
VCC4
GND4
PB0/FD0
PB7/FD7
PB1/FD1
PB6/FD6
PB2/FD2
PB5/FD5
PB3/FD3
PB4/FD4
56
55
54
53
1
52
3
51
5
50
7
49
9
48
11
47
13
46
15
45
17
44
19
43
21
42
23
41
25
40
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
2
4
6
8
10
12
14
16
18
C
20
22
24
26
39
P1
38
37
36
35
34
33
32
31
B
30
29
U5
U4
5
1
19
OE1
OE2
VCC_USB;20
1
19
GND;10
OE2
VCC_USB;20
GND;10
74LVC541A
74LVC541A
A
OE1
9
11
9
11
8
12
8
12
7
13
7
13
6
14
6
14
5
15
5
15
4
16
4
16
3
17
3
17
18
2
18
2
A
AD9912 EVALUATION BOARD
A
1
2
3
4
1
2
3
4
D
D
C111
C57
C43
C42
C94
C59
C102
C113
*
C44
C54
C
C110
C109
C67
C50
C51
C93
C
C64
*
*
C49
C68
*
C53
C90
C108
C19
C104
C20
*
*
B
B
C95
C96
C41
C97
1 uF CAP ON BOTTOM SIDE IS OPTIONAL
(1.8V)
(1.8V)
C17
(3.3V)
C98
(3.3V)
*
C15
C75
5
4
3
2
C18
5_POS
TB1
X
X
X
X
X
1
C52
A
A
AD9912 EVALUATION BOARD
A
1
2
3
4
1
2
3
4
IF USING ONE OF THE CRYSTALS OR THE XO (INSTEAD OF T5):
REMOVE C100, C101 & INSTALL ASSOCIATED BOXED ITEMS
D
D
OPTIONAL SYSCLK INPUTS
5
2
1
4
3
ETC1-1-13
4
3
1
2
DEFAULT: DO NOT INSTALL BOXED ITEMS
1
C
C
C23
C22
OPTIONAL SYSCLK INPUT
B
1
2
3
N/C
VDD
ENABLE_DISABLE
GND
F_OUTB
F_OUT
B
6
(1.8V)
DEFAULT: DO NOT INSTALL BOXED ITEMS
5
4
A
A
AD9912 EVALUATION BOARD
A
1
2
3
4
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