ad80164absvz Analog Devices, Inc., ad80164absvz Datasheet - Page 49

• Manufacturer Part Number: ad80164absvz
• Description: Dual, 12-/14-/16-bit,1 Gsps Digital-to-analog Converters
• Manufacturer: Analog Devices, Inc.

EVALUATION BOARD OPERATION
The AD9776A/AD9778A/AD9779A evaluation board is
designed to optimize the DAC performance and the speed of
the digital interface, yet remains user friendly. To operate the
board, the user needs a power source, a clock source, and a
digital data source. The user also needs a spectrum analyzer
or an oscilloscope to look at the DAC output. The diagram in
CLOCK IN
Figure 103. AD9776A/AD9778A/AD9779A Evaluation Board Showing All Connections
GENERATOR
PATTERN
DIGITAL
P4 Digital Input Connector
DATACLK OUT
ADAPTER
AUX33
CABLES
S7 DCLKOUT
GENERATOR
DVDD18
CLOCK
Figure 102. Typical Test Setup
CLKIN
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AD9779A
EVALUATION
AD9779A
SPI PORT
DVDD33
BOARD
SPI PORT
J1 CLOCK IN
JP15
JP14
JP16
JP17
JP4
JP8
JP3
JP2
CVDD18
Figure 102 illustrates the test setup. A sine or square wave clock
works well as a clock source. The dc offset on the clock is not a
problem, because the clock is ac-coupled on the evaluation board
before the REFCLK inputs. All necessary connections to the
evaluation board are shown in more detail in Figure 103.
S5 OUTPUT 1
S6 OUTPUT 2
AVDD33
ADL537x
1.8V POWER SUPPLY
3.3V POWER SUPPLY
MODULATOR
LOCAL OSC
SPECTRUM
ANALYZER
5V Supply
OUTPUT
ANALOG
DEVICES
AD9776A/
AD9788A/
AD9779A
INPUT
J2
AD9776A/AD9778A/AD9779A
+5V
GND