AD9785 Analog Devices, AD9785 Datasheet - Page 54

• Manufacturer Part Number: AD9785
• Description: Dual 12-Bit 800 MSPS DAC with Low Power 32-Bit Complex NCO
• Manufacturer: Analog Devices

Specifications of AD9785

• Resolution (bits): 12bit
• 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
AD9785/AD9787/AD9788 EVALUATION BOARDS
The remainder of this data sheet describes the evaluation
boards for testing the AD9785, AD9787, and AD9788 devices.
OUTPUT CONFIGURATION
Each evaluation board contains an Analog Devices ADL5372
quadrature modulator. The AD9785/AD9787/AD9788 devices
and the ADL5372 provide an easy-to-interface DAC/modulator
combination that can be easily characterized on the evaluation
board.
Solderable jumpers can be configured to evaluate the single-
ended or differential outputs of the AD9785/AD9787/AD9788.
DIGITAL DATA
DIGITAL PICTURE OF EVALUATION BOARD
DATACLK
OUTPUT
INPUTS
OUTPUTS
INPUTS
SYNC
SYNC
Figure 79. Evaluation Board
AD9788
Rev. A | Page 54 of 64
REFCLK
INPUT
JP4 JP15
JP8
JP3
JP2
SPI
PORT
JP14
JP16
JP17
The factory default jumper configuration is as follows:


To evaluate the ADL5372 on the evaluation board, reverse the
jumper positions as follows:


Note that the ADL5372 also requires its own separate 5 V and
GND connection on the evaluation board.
Jumpers JP2, JP3, JP4, and JP8 are unsoldered.
Jumpers JP14, JP15, JP16, and JP17 are soldered.
Jumpers JP2, JP3, JP4, and JP8 are soldered.
Jumpers JP14, JP15, JP16, and JP17 are unsoldered.
S8
S9
S6
S5
RESET
ADL5372
+5V
GND
ADL5372
OUTPUT
ADL5372
LO INPUT
5V POWER