GENERAL DESCRIPTION
The AD9851 is a highly integrated device that uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter, and comparator, to form a digitally-programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9851 generates a stable frequency and phase-programmable digitized analog output sine wave.

FEATURES
   180 MHz Clock Rate with Selectable 63 Reference Clock
      Multiplier
   On-Chip High Performance 10-Bit DAC and High Speed
      Comparator with Hysteresis
   SFDR >43 dB @ 70 MHz AOUT
   32-Bit Frequency Tuning Word
   Simplified Control Interface: Parallel or Serial
      Asynchronous Loading Format
   5-Bit Phase Modulation and Offset Capability
   Comparator Jitter <80 ps p-p @ 20 MHz
   +2.7 V to +5.25 V Single Supply Operation
   Low Power: 555 mW @ 180 MHz
   Power-Down Function, 4 mW @ +2.7 V
   Ultrasmall 28-Lead SSOP Packaging

APPLICATIONS
   Frequency/Phase-Agile Sine Wave Synthesis
   Clock Recovery and Locking Circuitry for Digital
      Communications
   Digitally Controlled ADC Encode Generator
   Agile L.O. Applications in Communications
   Quadrature Oscillator
   CW, AM, FM, FSK, MSK Mode Transmitter