AD9778 Analog Devices, AD9778 Datasheet - Page 10

• Manufacturer Part Number: AD9778
• Description: Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9778

• Resolution (bits): 14bit
• Dac Update Rate: 1GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

AD9776/AD9778/AD9779
Pin
No.
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Mnemonic
TXENABLE
P2D<11>
P2D<10>
P2D<9>
DVDD18
DGND
P2D<8>
P2D<7>
P2D<6>
P2D<5>
P2D<4>
P2D<3>
P2D<2>
P2D<1>
DVDD18
DGND
P2D<0>
NC
NC
NC
NC
DVDD18
DVDD33
SYNC_O−
SYNC_O+
DGND
PLL_LOCK
SDO
SDIO
SCLK
CSB
RESET
IRQ
AGND
Description
Transmit Enable.
Port 2, Data Input D11 (MSB).
Port 2, Data Input D10.
Port 2, Data Input D9.
1.8 V Digital Supply.
Digital Common.
Port 2, Data Input D8.
Port 2, Data Input D7.
Port 2, Data Input D6.
Port 2, Data Input D5.
Port 2, Data Input D4.
Port 2, Data Input D3.
Port 2, Data Input D2.
Port 2, Data Input D1.
1.8 V Digital Supply.
Digital Common.
Port 2, Data Input D0 (LSB).
No Connect.
No Connect.
No Connect.
No Connect.
1.8 V Digital Supply.
3.3 V Digital Supply.
Differential Synchronization Output.
Differential Synchronization Output
Digital Common
PLL Lock Indicator
SPI Port Data Output
SPI Port Data Input/Output
SPI Port Clock
SPI Port Chip Select Bar.
Reset, Active High.
Interrupt Request.
Analog Common.
Rev. A | Page 10 of 56
Pin
No.
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
1
The combined differential clock input at the CLK+ and CLK– pins are referred
to as REFCLK.
Mnemonic
IPTAT
VREF
I120
AVDD33
AGND
AVDD33
AGND
AVDD33
AGND
AGND
OUT2_P
OUT2_N
AGND
AUX2_P
AUX2_N
AGND
AUX1_N
AUX1_P
AGND
OUT1_N
OUT1_P
AGND
AGND
AVDD33
AGND
AVDD33
AGND
AVDD33
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.
Voltage Reference Output.
120 μA Reference Current.
3.3 V Analog Supply.
Analog Common.
3.3 V Analog Supply.
Analog Common.
3.3 V Analog Supply.
Analog Common.
Analog Common.
Differential DAC Current Output, Channel 2.
Analog Common.
Auxiliary DAC Current Output, Channel 2.
Auxiliary DAC Current Output, Channel 2.
Analog Common.
Auxiliary DAC Current Output, Channel 1.
Auxiliary DAC Current Output, Channel 1.
Analog Common.
Differential DAC Current Output, Channel 1.
Analog Common.
Analog Common.
3.3 V Analog Supply.
Analog Common.
3.3 V Analog Supply.
Analog Common.
3.3 V Analog Supply.
Description
Differential DAC Current Output, Channel 2.
Differential DAC Current Output, Channel 1.