The 4 x 4-mm AD9838 and 3 x 3-mm ADAD9837 direct digital synthesis (DDS) ICs consume 11 and 8.5 mW, respectively, when operating from clock rates up to 16 MHz — claimed to offer 30% lower power consumption and a 60% reduction in footprint over competing devices while operating over the extended temperature range of 40° to 125°C. The low power enables designers to generate high-performance sine, square, and triangular outputs, while the small package size allows developers to reduce the footprint of their designs or increase sensor-node density to enable the development of feature-rich applications within the same form factor.
The AD9838 has an on-board comparator and a power-down pin that allows external control of the power down-mode. The AD9837 has a power-down sleep function. The parts settle in nanoseconds with granularity well below 100 MHz. Along with an on-chip 10-bit low-power DAC, the new products offer 28-bit fine-tuning granularity and an SFDR of greater than 68-dB. The AD9838 and AD9837 are housed in 20-and 10-lead LFCSP packages, respectively. (Ea/1,000: AD9838, $2.10; AD9837,$1.65 — available now.)
By Christina Nickolas
Analog Devices , Wilmington , MA
Sales 800-262-5643
www.analog.com
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