PRODUCT OVERVIEW

The AD9959 consists of four independently programmable DDS channels. The AD9959 features independent frequency, phase, and amplitude control of each channel; this allows for the correction of imbalances due to analog processing such as filtering, amplification, or PCB layout related mismatches. The AD9959 supports frequency sweeping for radar and instrumentation applications. Since all four channels share a common system clock, they are inherently synchronized. If more than four channels are required, synchronizing multiple AD9959s is a simple task.

FEATURES

  Four synchronized DDS channels @500 MSPS

  Independent frequency / phase / amplitude control between all channels

  Matched latencies for Freq, Phase, and Amplitude changes

  Excellent channel to channel isolation

  Frequency sweeping capability

  Up to 16 levels of modulation (pin selectable)

  Individually programmable DAC full scale currents

  Four integrated 10-bit D/A converters(DACs)

  32-bit frequency tuning resolution

  14-bit phase offset resolution

  10-bit output amplitude scaling resolution

  Serial I/O Port(SPI) with enhanced data throughput

  Software/Hardware controlled power-down

  Dual supply operation (1.8 V DDS core / 3.3 V serial I/O)

  Built-in synchronization for multiple devices

  Selectable REF_CLK multipier(PLL) 4x to 20x (bypassable)

  Selectable REF_CLK crystal operation

  56 pin LFCSP package

APPLICATIONS

  Agile L.O. frequency synthesis

  Phased array radar / sonar

  Instrumentation

  Synchronized clocking

  RF source for AOTF