1-GSPS digital synthesizer features spur reduction channels

1-GSPS digital synthesizer features spur reduction channels

Chip has 3.6-µHz tuning resolution and up to 400-MHz output

The AD9912 direct digital synthesizer (DDS) provides unprecedented spurious-free dynamic range performance—especially useful for applications where every decibel of harmonic generation is critical, such as in military receivers. The chip has spur-reduction channels to knock down the two largest harmonic spurs by up to 10 dB. It samples at 1 Gsample/s and features an integrated 14-bit D/A converter and 3.6-µHz tuning resolution.

The DDS has direct output signals up to 400 MHz, consumes less than 1 W, and features phase noise of -133 dBc/Hz at 95 MHz, with a 10-kHz offset. Its integrated system clock PLL allows reference clocks as low as 25 MHz, and the device comes in a LFCSP64 package with operation over the industrial temperature range. ($37.25 ea/1,000available now.)

Analog Devices , Wilmington , MA
Technical Support 800-262-5643

http://www.analog.com