Datasheet

Data Sheet AD9957
Rev. C | Page 9 of 64
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
26 27
28
29
30
55
54
53
52
51
TQFP-100 (E_PAD)
TOP VIEW
(Not to Scale)
AD9957
D16 D15
DVDD_I/O (3.3V)
DGND
DVDD (1.8V)
5
4
3
2
7
6
9
8
1
11
10
16
15
14
13
18
17
20
19
22
21
12
24
23
25
32
33
34
35
36 38
39
40
41
42
43 44
45
46
47
48 49
50
31
37
D14 D13 D12
D11
D10
D9 D8 D7 D6
PDCLK
TxENABLE/FS
DGND
D5/SPORT I-DATA
D4/SPORT Q-DATA
D3
DVDD_I/O (3.3V)
DVDD (1.8V)
D2 D1 D0
80
IOUT
79
AGND
78
AGND
77
AVDD (3.3V)
76
AVDD (3.3V)
75
AVDD (3.3V)
74
AVDD (3.3V)
73
AGND
72
NC
71
I/O_RESET
70
CS
69
SCLK
68
SDO
67
SDIO
66
DVDD_I/O (3.3V)
65
DGND
64
DVDD (1.8V)
63
DGND
62
DGND
61
NC
60
OSK
59
I/O_UPDATE
58
DGND
57
DVDD (1.8V)
56
DVDD_I/O (3.3V)
SYNC_CLK
PROFILE0
PROFILE1
PROFILE2
RT
100
99
98
97
96
95 94 93 92
91
90
89 88
87
86
85 84 83 82
81
NC NC NC NC AGND XTAL_SEL
REFCLK_OUT NC AVDD (1.8V) REF_CLK REF_CLK AVDD (1.8V) AGND NC NC AGND DAC_RSET AVDD (3.3V) AGND IOUT
NC
PLL_LOOP_FILTER
AVDD (1.8V)
AGND
AGND
AVDD (1.8V)
SYNC_IN+
SYNC_IN–
SYNC_OUT+
SYNC_OUT–
DVDD_I/O (3.3V)
SYNC_SMP_ERR
DGND
MASTER_RESET
DVDD_I/O (3.3V)
DGND
DVDD (1.8V)
EXT_PWR_DWN
PLL_LOCK
CCI_OVFL
DVDD_I/O (3.3V)
DGND
DVDD (1.8V)
NC
D17
06384-004
PIN 1
INDICATOR
NOTES
1. NC = NO CONNECT.
2. EXPOSED PAD SHOULD BE SOLDERED TO GROUND.
Figure 4. Pin Configuration