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1 introduction, Introduction – Sundance SMT399-160 User Manual

Page 6

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1 Introduction


The SMT399-160 is a multi-output mezzanine single width module, which is able to generate
sine waves at up to 160MHz. This mezzanine board is to be fitted on one of Sundance SLB
(Sundance LVDS Bus) base modules, such as

SMT338-VP

or

SMT398-VP

or

SMT368

and

cannot be used on its own. It is built around two

AD9954

s, Direct Digital Synthesizer (DDS –

Analog Devices) featuring

14-bit DAC

operating/sampling at up to 400 MHz. Both devices

are separately programmable, can contain up to 4 profiles and have the possibility of being
synchronised. The architecture allows generating single-tone or dual-tone signals. DDS
outputs are split into two legs, each of them featuring a programmable amplifier (VGA). The
SMT399-160 has got in total two pairs of outputs.
A Xilinx FPGA Virtex-II Pro (or Virtex4) from the base module, is used to control DDSs and
Variable Gain Amplifiers (VGAs) of the SMT399-160, after receiving command words via a
Comport.
SMT399-160 modules can be cascaded and work into the AD9954 Master/Slave mode.
PCB connectors are

MMBXs

from

Hubert Suhner

.

It can be used in the following application:

-

Radio systems, as a clock generator (fine tuning),

-

Test systems (dual tone and fast hopping),

-

Programmable system (software programmable),

-

Etc…


User Manual SMT399-160

Page 6 of 39

Last Edited: 24/05/2007 17:12:00