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/
Transmit Enable. In single port mode, this
IQSELECT
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
69
CSB
70
RESET
71
IRQ
72
AGND
73
IPTAT
74
VREF
75
I120
76
AVDD33
77
AGND
78
AVDD33
79
AGND
80
AVDD33
81
AGND
82
AGND
83
OUT2_P
84
OUT2_N
85
AGND
86
AUX2_P
87
AUX2_N
88
AGND
89
AUX1_N
90
AUX1_P
91
AGND
92
OUT1_N
93
OUT1_P
94
AGND
95
AGND
96
AVDD33
97
AGND
98
AVDD33
99
AGND
100
AVDD33
Rev. B | Page 11 of 56
AD9776A/AD9778A/AD9779A
Description
3-Wire Interface Port Chip Select Bar.
Reset, Active High.
Interrupt Request.
Analog Ground.
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.
Voltage Reference Output.
120 μA Reference Current.
3.3 V Analog Supply.
Analog Ground.
3.3 V Analog Supply.
Analog Ground.
3.3 V Analog Supply.
Analog Ground.
Analog Ground.
Differential DAC Current Output, Channel 2.
Differential DAC Current Output, Channel 2.
Analog Ground.
Auxiliary DAC Current Output, Channel 2.
Auxiliary DAC Current Output, Channel 2.
Analog Ground.
Auxiliary DAC Current Output, Channel 1.
Auxiliary DAC Current Output, Channel 1.
Analog Ground.
Differential DAC Current Output, Channel 1.
Differential DAC Current Output, Channel 1.
Analog Ground.
Analog Ground.
3.3 V Analog Supply.
Analog Ground.
3.3 V Analog Supply.
Analog Ground.
3.3 V Analog Supply.
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