AD9788 Analog Devices, AD9788 Datasheet - Page 30

• Manufacturer Part Number: AD9788
• Description: Dual 16-Bit 800 MSPS DAC with Low Power 32-Bit Complex NCO
• Manufacturer: Analog Devices

Specifications of AD9788

• Resolution (bits): 16bit
• Dac Update Rate: 800MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

AD9785/AD9787/AD9788
The Auxiliary DAC 1 control register comprises two bytes located at Address 0x06. These bits are routed directly to the periphery of the
digital logic. No digital functionality within the main digital block is required.
Table 16. Auxiliary DAC 1 Control Register
Address
0x06
The Q DAC control register comprises two bytes located at Address 0x07. These bits are routed directly to the periphery of the digital
logic. No digital functionality within the main digital block is required.
Table 17. Q DAC Control Register
Address
0x07
The Auxiliary DAC 2 control register comprises two bytes located at Address 0x08. These bits are routed directly to the periphery of the
digital logic. No digital functionality within the main digital block is required.
Table 18. Auxiliary DAC 2 Control Register
Address
0x08
Bit
[15]
[14]
[13]
[12:10]
[9:0]
Bit
[15]
[14]
[13:10]
[9:0]
Bit
[15]
[14]
[13]
[12:10]
[9:0]
Name
Auxiliary DAC 1 sign
Auxiliary DAC 1
current direction
Auxiliary DAC 1
power-down
Reserved
Auxiliary DAC 1 data
Name
Q DAC sleep
Q DAC power-down
Reserved
Q DAC gain adjustment
Auxiliary DAC 2 sign
Auxiliary DAC 2
current direction
Auxiliary DAC 2
power-down
Reserved
Auxiliary DAC 2 data
Name
0: Default. If the Auxiliary DAC 1 sign bit is cleared, the Aux DAC 1 sign is positive.
Pin 90 is the active pin.
1: If the Auxiliary DAC 1 sign bit is set, the Aux DAC 1 sign is negative. Pin 89 is the
active pin.
0: Default. If the Auxiliary DAC 1 current direction bit is cleared, the Aux DAC 1 sources
current.
1: If the Auxiliary DAC 1 current direction bit is set, the Aux DAC 1 sinks current.
0: Default. If the Auxiliary DAC 1 power-down bit is cleared, the Aux DAC 1 is active.
1: If the Auxiliary DAC 1 power-down bit is set, the Aux DAC 1 is inactive and enters a
low power state.
Reserved for future use.
These bits are the Auxiliary DAC 1 gain adjustment bits.
Description
Description
0: Default. If the Q DAC sleep bit is cleared, the Q DAC is active.
1: If the Q DAC sleep bit is set, the Q DAC is inactive and enters a low power state.
0: Default. If the Q DAC power-down bit is cleared, the Q DAC is active.
1: If the Q DAC power-down bit is set, the Q DAC is inactive and enters a low power state.
Reserved for future use.
These bits are the Q DAC gain adjustment bits.
Description
0: Default. If the Auxiliary DAC 2 sign bit is cleared, the Aux DAC 2 sign is positive.
Pin 86 is the active pin.
1: If the Auxiliary DAC 2 sign bit is set, the Aux DAC 2 sign is negative. Pin 87 is the
active pin.
0: Default. If the Auxiliary DAC 2 current direction bit is cleared, the Aux DAC 2 sources
current.
1: If the Auxiliary DAC 2 current direction bit is set, the Aux DAC 2 sinks current.
0: Default. If the Auxiliary DAC 2 power-down bit is cleared, the Aux DAC 2 is active.
1: If the Auxiliary DAC 2 power-down bit is set, the Aux DAC 2 is inactive and enters
a low power state.
Reserved for future use.
These bits are the Auxiliary DAC 2 gain adjustment bits.
Rev. A | Page 30 of 64