Datasheet

AD9776/AD9778/AD9779
Rev. A | Page 14 of 56
Pin
No.
Mnemonic Description
43 DVDD18 1.8 V Digital Supply.
44 DGND Digital Common.
45 P2D<12> Port 2, Data Input D12.
46 P2D<11> Port 2, Data Input D11.
47 P2D<10> Port 2, Data Input D10.
48 P2D<9> Port 2, Data Input D9.
49 P2D<8> Port 2, Data Input D8.
50 P2D<7> Port 2, Data Input D7.
51 P2D<6> Port 2, Data Input D6.
52 P2D<5> Port 2, Data Input D5.
53 DVDD18 1.8 V Digital Supply.
54 DGND Digital Common.
55 P2D<4> Port 2, Data Input D4.
56 P2D<3> Port 2, Data Input D3.
57 P2D<2> Port 2, Data Input D2.
58 P2D<1> Port 2, Data Input D1.
59 P2D<0> Port 2, Data Input D0 (LSB).
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 Common.
65 PLL_LOCK PLL Lock Indicator.
66 SPI_SDO SPI Port Data Output.
67 SPI_SDIO SPI Port Data Input/Output.
68 SCLK SPI Port Clock.
69 SPI_CSB SPI Port Chip Select Bar.
70 RESET Reset, Active High.
71 IRQ Interrupt Request.
72 AGND Analog Common.
73 IPTAT
Factory Test Pin. Output current is
proportional to absolute temperature,
approximately 10 μA at 25°C with
approximately 20 nA/°C slope. This pin
should remain floating.
Pin
No.
Mnemonic Description
74 VREF Voltage Reference Output.
75 I120 120 μA Reference Current.
76 AVDD33 3.3 V Analog Supply.
77 AGND Analog Common.
78 AVDD33 3.3 V Analog Supply.
79 AGND Analog Common.
80 AVDD33 3.3 V Analog Supply.
81 AGND Analog Common.
82 AGND Analog Common.
83 OUT2_P
Differential DAC Current Output,
Channel 2.
84 OUT2_N
Differential DAC Current Output,
Channel 2.
85 AGND Analog Common.
86 AUX2_P Auxiliary DAC Current Output, Channel 2.
87 AUX2_N Auxiliary DAC Current Output, Channel 2.
88 AGND Analog Common.
89 AUX1_N Auxiliary DAC Current Output, Channel 1.
90 AUX1_P Auxiliary DAC Current Output, Channel 1.
91 AGND Analog Common.
92 OUT1_N
Differential DAC Current Output,
Channel 1.
93 OUT1_P
Differential DAC Current Output,
Channel 1.
94 AGND Analog Common.
95 AGND Analog Common.
96 AVDD33 3.3 V Analog Supply.
97 AGND Analog Common.
98 AVDD33 3.3 V Analog Supply.
99 AGND Analog Common.
100 AVDD33 3.3 V Analog Supply.
1
The combined differential clock input at the CLK+ and CLK– pins are referred
to as REFCLK.