Datasheet

AD9776A/AD9778A/AD9779A
Rev. B | Page 10 of 56
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
74
VREF
73
IPTAT
72
AGND
69
CSB
70
RESET
71
IRQ
75
I120
68
SCLK
67
SDIO
66
SDO
64
DGND
63
SYNC_O+
62
SYNC_O–
61
DVDD33
60
DVDD18
59
NC
58
NC
57
NC
56
NC
55
P2D0
54
DGND
53
DVDD18
52
P2D1
51
P2D2
65
PLL_LOCK
PIN 1
100
AVDD33
99
AGND
98
AVDD33
97
AGND
96
AVDD33
95
AGND
94
AGND
93
OUT1_P
92
OUT1_N
91
AGND
90
AUX1_P
89
AUX1_N
88
AGND
87
AUX2_N
86
AUX2_P
85
AGND
84
OUT2_N
83
OUT2_P
82
AGND
81
AGND
80
AVDD33
79
AGND
78
AVDD33
77
AGND
76
AVDD33
26
P1D4
27
P1D3
28
P1D2
29
P1D1
30
P1D0
31
NC
32
DGND
33
DVDD18
34
NC
35
NC
36
NC
37
DATACLK
38
DVDD33
39
TXENABLE/IQSELECT
40
P2D11
41
P2D10
42
P2D9
43
DVDD18
44
DGND
45
P2D8
46
P2D7
47
P2D6
48
P2D5
49
P2D4
50
P2D3
2
CVDD18
3
CGND
4
CGND
7
CGND
6
REFCLK–
5
REFCLK+
1
CVDD18
8
CGND
9
CVDD18
10
CVDD18
12
AGND
13
SYNC_I+
14
SYNC_I–
15
DGND
16
DVDD18
17
P1D11
18
P1D10
19
P1D9
20
P1D8
21
P1D7
22
DGND
23
DVDD18
24
P1D6
25
P1D5
11
CGND
AD9776A
TOP VIEW
(Not to Scale)
ANALOG DOMAIN
DIGITAL DOMAIN
NC = NO CONNECT
06452-002
NOTES
1. FOR OPTIM
A
L THERMAL PERFORMANCE, THE EXPOSED
PAD SHOULD BE SOLDERED TO THE GROUND PLANE FOR
THE 100-LEAD, THERMA
L
LY ENHANCED TQFP PACKAGE.
Figure 3. AD9776A Pin Configuration
Table 7. AD9776A Pin Function Descriptions
Pin
No. Mnemonic Description
Pin
No. Mnemonic Description
1 CVDD18 1.8 V Clock Supply. 17 P1D11 Port 1, Data Input D11 (MSB).
2 CVDD18 1.8 V Clock Supply. 18 P1D10 Port 1, Data Input D10.
3 CGND
Clock Ground. 19 P1D9 Port 1, Data Input D9.
4 CGND
Clock Ground. 20 P1D8 Port 1, Data Input D8.
5 REFCLK+
Differential Clock Input. 21 P1D7 Port 1, Data Input D7.
6 REFCLK−
Differential Clock Input. 22 DGND Digital Ground.
7 CGND
Clock Ground. 23 DVDD18 1.8 V Digital Supply.
8 CGND
Clock Ground. 24 P1D6 Port 1, Data Input D6.
9 CVDD18
1.8 V Clock Supply. 25 P1D5 Port 1, Data Input D5.
10 CVDD18
1.8 V Clock Supply. 26 P1D4 Port 1, Data Input D4.
11 CGND
Clock Ground. 27 P1D3 Port 1, Data Input D3.
12 AGND
Analog Ground. 28 P1D2 Port 1, Data Input D2.
13 SYNC_I+
Differential Synchronization Input. 29 P1D1 Port 1, Data Input D1.
14 SYNC_I−
Differential Synchronization Input. 30 P1D0 Port 1, Data Input D0 (LSB).
15 DGND
Digital Ground. 31 NC No Connect.
16 DVDD18 1.8 V Digital Supply.
32 DGND Digital Ground.