AD9778A_15 Datasheet, PDF (14/56 Pages) Analog Devices – Dual, 12-/14-/16-Bit,1 GSPS Digital-to-Analog Converters

AD9776A/AD9778A/AD9779A
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
CVDD18 1
CVDD18 2
CGND 3
CGND 4
REFCLK+ 5
REFCLK– 6
CGND 7
CGND 8
CVDD18 9
CVDD18 10
CGND 11
AGND 12
SYNC_I+ 13
SYNC_I– 14
DGND 15
DVDD18 16
P1D15 17
P1D14 18
P1D13 19
P1D12 20
P1D11 21
DGND 22
DVDD18 23
P1D10 24
P1D9 25
PIN 1
ANALOG DOMAIN
DIGITAL DOMAIN
AD9779A
TOP VIEW
(Not to Scale)
75 I120
74 VREF
73 IPTAT
72 AGND
71 IRQ
70 RESET
69 CSB
68 SCLK
67 SDIO
66 SDO
65 PLL_LOCK
64 DGND
63 SYNC_O+
62 SYNC_O–
61 DVDD33
60 DVDD18
59 P2D0
58 P2D1
57 P2D2
56 P2D3
55 P2D4
54 DGND
53 DVDD18
52 P2D5
51 P2D6
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
NOTES
1. FOR OPTIMAL THERMAL PERFORMANCE, THE EXPOSED
PAD SHOULD BE SOLDERED TO THE GROUND PLANE FOR
THE 100-LEAD, THERMALLY ENHANCED TQFP PACKAGE.
Figure 5. AD9779A Pin Configuration
Table 9. AD9779A Pin Function Descriptions
Pin
No. Mnemonic Description
1 CVDD18 1.8 V Clock Supply.
2 CVDD18 1.8 V Clock Supply.
3 CGND
Clock Ground.
4 CGND
Clock Ground.
5 REFCLK+ Differential Clock Input.
6 REFCLK− Differential Clock Input.
7 CGND
Clock Ground.
8 CGND
Clock Ground.
9 CVDD18 1.8 V Clock Supply.
10 CVDD18 1.8 V Clock Supply.
11 CGND
Clock Ground.
12 AGND
Analog Ground.
13 SYNC_I+ Differential Synchronization Input.
14 SYNC_I− Differential Synchronization Input.
15 DGND
Digital Ground.
16 DVDD18 1.8 V Digital Supply.
17 P1D15
Port 1, Data Input D15 (MSB).
18 P1D14
Port 1, Data Input D14.
Pin
No. Mnemonic Description
19 P1D13
Port 1, Data Input D13.
20 P1D12
Port 1, Data Input D12.
21 P1D11
Port 1, Data Input D11.
22 DGND
Digital Ground.
23 DVDD18 1.8 V Digital Supply.
24 P1D10
Port 1, Data Input D10.
25 P1D9
Port 1, Data Input D9.
26 P1D8
Port 1, Data Input D8.
27 P1D7
Port 1, Data Input D7.
28 P1D6
Port 1, Data Input D6.
29 P1D5
Port 1, Data Input D5.
30 P1D4
Port 1, Data Input D4.
31 P1D3
Port 1, Data Input D3.
32 DGND
Digital Ground.
33 DVDD18 1.8 V Digital Supply.
34 P1D2
Port 1, Data Input D2.
35 P1D1
Port 1, Data Input D1.
36 P1D0
Port 1, Data Input D0 (LSB).
Rev. B | Page 14 of 56