1 GSPS DIRECT DIGITAL SYNTHESIZER WITH SPUR REDUCTION CHANNELS OFFERS IMPROVED DYNAMIC RANGE

New low-power DDS core allows for multiple spur-reduction channels, resulting in improved wideband spurious-free dynamic range (SFDR) performance with output signals up to 400 MHz while consuming less than 1000 mW.
AD9912

Norwood, MA (06/04/2007) -
About the AD9912
Designed for test and measurement equipment, wireless base stations, and secure communications devices, Analog Devices’ AD9912 direct digital synthesizer (DDS) provides an unprecedented spurious-free dynamic range (SFDR) performance: output signals up to 400 MHz while consuming less than 1000 mW. This new level of performance is attainable using ADI’s proprietary “spur-reduction” channels to knock down the two largest harmonic spurs by up to 10 dB. This helps ease design efforts and enables engineers to spend less time frequency planning, especially in applications such as military receivers where every last dB is important to maintain critical system functions. The spur-reduction capability expands the benefits of DDS into designs where previous wideband SFDR performance was a limiting factor.

The AD9912 is a 1 GSPS (billion samples per second) DDS device featuring an integrated 14-bit digital-to-analog converter (DAC) and 3.6 microHertz tuning resolution on outputs up to 400 MHz. The AD9912 also features a differential HSTL (high-speed transceiver logic) comparator for clock generation. With a flexible system clock input, the AD9912 will also accept either a crystal or external clock. An on-chip low-noise PLL (phase-lock loop) reference clock multiplier allows reference clocks as low as 25 MHz.

Unlike previous DDS products from Analog Devices the AD9912 has auxiliary DDS channels that can be programmed to reduce the magnitude of problematic harmonic spurs in its output spectrum.

The AD9912 complements ADI’s AD9910 and AD9858 providing designers with a variety of DDS function-set options at a 1 GSPS sampling frequency.

Availability and Pricing
The AD9912 is sampling now and will be available in full production quantities in July 2007. The AD9912 costs $37.25 per unit in 1,000-unit quantities and is available in 64-lead LFCSP (lead-frame chip-scale package) packaging.

About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.

Editor's Contact Information:

Jennifer Viera
781-937-1363
781/937-1078
jennifer.viera@analog.com

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