Date: 03/05/2011

Direct digital synthesis (DDS) ICs with advantage of size and power saving

Analog Devices, Inc. has said its newly introduced direct digital synthesis (DDS) ICs that offer 30 percent lower power consumption and a 60 percent reduction in footprint than competing devices while operating over the extended temperature range of 40º C to 125º C. The AD9838 DDS and AD9837 DDS ICs consumes 11 mW when operating from clock rates up to 16 MHz. The new devices are suggested for industrial and communications applications, including sensory excitation, impedance spectroscopy and battery-enabled diagnostic and communication equipment.

The AD9838 DDS and AD9837 DDS ICs settle in nanoseconds with granularity well below 100 MHz. Along with an on-chip, 10-bit, low-power DAC (digital-to-analog converter), the new products offer 28-bit fine-tuning granularity and high SFDR (spurious-free dynamic range).

The devices to support single-tone, 2FSK, 2PSK, QPSK, sweep capability and amplitude modulation.
Offers spectral performance of greater than 68-dB wideband SFDR.
Product Description Sample Availability Full-Volume Production Price Each
in 1,000 Quantities Packaging
AD9838
Low-power DDS featuring differential current output with on-board comparator for clock generation Now Now $2.10
20-lead
4 mm × 4 mm LFCSP
AD9837
Low-power DDS with voltage output