High-resolution frequencies from DDS module

The MS-2002 WaveCor DDS module is a CMOS direct digital synthesis device that provides superior frequency resolution and unmatched broadband spurious and phase noise performance.

The MS-2002 WaveCor DDS module is a CMOS direct digital synthesis device that provides superior frequency resolution and unmatched broadband spurious and phase noise performance.

The first in a series of WaveCor modules, the MS-2002 covers a frequency of 2 to 22.5MHz with a clock frequency of 100MHz.

Typical spurious performance is -80dBc.

Critical synthesis specifications include switching speed of 480ns (100MHz clock) and the ability to operate in either CW or chirp mode.

The device offers a 64bit frequency/phase accumulator structure providing high tuning resolution of frequency, delta frequency and phase offset.

ITT's proprietary DDS technique dramatically reduces spurious signals by designing out impurities typically caused by NCO/DAC phase and amplitude quantisation.

The cumulative result is a full featured, versatile module that will allow system designers to reduce the amount of RF mix/divide circuitry required to reduce the spurious levels of traditional DDS synthesisers.

The device requires an external 100MHz clock source and a simple output antialiasing filter.

A serial LVDS interface allows for simple integration with host control devices with a minimum of cabling.

For complex applications, up to 16 units can be cascaded together in a multiple configuration.

The device is packaged in a 4 x 5 x 0.6in housing including ribbon-cable.

An optional WaveCor test kit is available separately, which includes a voltage regulator board, PC interface cable, and control software for easy evaluation from a standard PC.

Optional bandwidths and clock speeds are also available.

Future members of the WaveCor family will offer a true digital I/Q modulation port.

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