Datasheet

AD9776A/AD9778A/AD9779A
Rev. B | Page 11 of 56
Pin
No. Mnemonic Description
33 DVDD18 1.8 V Digital Supply.
34 NC No Connect.
35 NC No Connect.
36 NC No Connect.
37
DATACLK
Data Clock Output.
38 DVDD33 3.3 V Digital Supply.
39
TXENABLE/
IQSELECT
Transmit Enable. In single port mode, this
pin also functions as IQSELECT.
40 P2D11 Port 2, Data Input D11 (MSB).
41 P2D10 Port 2, Data Input D10.
42 P2D9 Port 2, Data Input D9.
43 DVDD18 1.8 V Digital Supply.
44 DGND Digital Ground.
45 P2D8 Port 2, Data Input D8.
46 P2D7 Port 2, Data Input D7.
47 P2D6 Port 2, Data Input D6.
48 P2D5 Port 2, Data Input D5.
49 P2D4 Port 2, Data Input D4.
50 P2D3 Port 2, Data Input D3.
51 P2D2 Port 2, Data Input D2.
52 P2D1 Port 2, Data Input D1.
53 DVDD18 1.8 V Digital Supply.
54 DGND Digital Ground.
55 P2D0 Port 2, Data Input D0 (LSB).
56 NC No Connect.
57 NC No Connect.
58 NC No Connect.
59 NC No Connect.
60 DVDD18 1.8 V Digital Supply.
61 DVDD33 3.3 V Digital Supply.
62 SYNC_O− Differential Synchronization Output.
63 SYNC_O+ Differential Synchronization Output.
64 DGND Digital Ground.
65 PLL_LOCK PLL Lock Indicator.
66 SDO 3-Wire Interface Port Data Output.
67 SDIO 3-Wire Interface Port Data Input/Output.
68 SCLK 3-Wire Interface Port Clock.
Pin
No. Mnemonic Description
69 CSB 3-Wire Interface Port Chip Select Bar.
70 RESET Reset, Active High.
71 IRQ Interrupt Request.
72 AGND Analog Ground.
73 IPTAT
Factory Test Pin. Output current is
proportional to absolute temperature,
approximately 14 μA at 25°C with
approximately 20 nA/°C slope. This pin
should remain floating.
74 VREF Voltage Reference Output.
75 I120 120 μA Reference Current.
76 AVDD33 3.3 V Analog Supply.
77 AGND Analog Ground.
78 AVDD33 3.3 V Analog Supply.
79 AGND Analog Ground.
80 AVDD33 3.3 V Analog Supply.
81 AGND Analog Ground.
82 AGND Analog Ground.
83 OUT2_P Differential DAC Current Output, Channel 2.
84 OUT2_N Differential DAC Current Output, Channel 2.
85 AGND Analog Ground.
86 AUX2_P Auxiliary DAC Current Output, Channel 2.
87 AUX2_N Auxiliary DAC Current Output, Channel 2.
88 AGND Analog Ground.
89 AUX1_N Auxiliary DAC Current Output, Channel 1.
90 AUX1_P Auxiliary DAC Current Output, Channel 1.
91 AGND Analog Ground.
92 OUT1_N Differential DAC Current Output, Channel 1.
93 OUT1_P Differential DAC Current Output, Channel 1.
94 AGND Analog Ground.
95 AGND Analog Ground.
96 AVDD33 3.3 V Analog Supply.
97 AGND Analog Ground.
98 AVDD33 3.3 V Analog Supply.
99 AGND Analog Ground.
100 AVDD33 3.3 V Analog Supply.