EVAL-AD9838SDZ Analog Devices Inc, EVAL-AD9838SDZ Datasheet - Page 26

• Manufacturer Part Number: EVAL-AD9838SDZ
• Description: EVALUATION BOARD
• Manufacturer: Analog Devices Inc
• Series: -r

Specifications of EVAL-AD9838SDZ

• Main Purpose: Timing, Direct Digital Synthesis (DDS)
• Embedded: No
• Utilized Ic / Part: AD9838
• Primary Attributes: USB Powered or External Supply
• Secondary Attributes: SPI Interface
• Kit Application Type: Clock & Timing
• Application Sub Type: Clock Generator
• Kit Contents: Software CD, USB Cable
• Silicon Manufacturer: Analog Devices
• Silicon Core Number: AD9838
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AD9838
EVALUATION BOARD
The AD9838 evaluation board allows designers to evaluate the
high performance AD9838 DDS modulator with a minimum
of effort.
SYSTEM DEMONSTRATION PLATFORM
The system demonstration platform (SDP) is a hardware and
software evaluation tool for use in conjunction with product
evaluation boards. The
ADSP-BF527
through a USB 2.0 high speed port. For more information,
see the SDP board product page.
Note that the SDP board is sold separately from the AD9838
evaluation board.
AD9838 TO SPORT INTERFACE
The Analog Devices SDP board has a SPORT serial port that is
used to control the serial inputs to the AD9838. The connections
are shown in Figure 31.
EVALUATION KIT
The DDS evaluation kit includes a populated, tested AD9838
printed circuit board (PCB). The schematics of the evaluation
board are shown in Figure 33 and Figure 34.
The software provided in the evaluation kit allows the user to
easily program the AD9838 (see Figure 32). The evaluation soft-
ware runs on any IBM-compatible PC with Microsoft® Windows®
software installed (including Windows 7). The software is com-
patible with both 32-bit and 64-bit operating systems.
More information about the evaluation software is available on
the software CD and on the
SPORT_TSCLK
ADSP-BF527
processor with USB connectivity to the PC
SPORT_TFS
SPORT_DT0
Figure 31. SDP to AD9838 Interface
SDP board
AD9838 product
is based on the Blackfin®
FSYNC
SCLK
SDATA
AD9838
page.
Rev. A | Page 26 of 32
CRYSTAL OSCILLATOR VS. EXTERNAL CLOCK
The AD9838 can operate with master clocks up to 16 MHz.
A 16 MHz oscillator is included on the evaluation board. This
oscillator can be removed and, if required, an external CMOS
clock can be connected to the part. Options for the general
oscillator include the following:
•
•
POWER SUPPLY
Power to the AD9838 evaluation board can be provided from
the USB connector or externally through pin connections. The
power leads should be twisted to reduce ground loops.
AEL 301-Series oscillators, AEL Crystals
SG-310SCN oscillators, Epson Electronics
Figure 32. AD9838 Evaluation Software Interface