GENERAL DESCRIPTION
The AD9858 is a direct digital synthesizer (DDS) featuring a 10-bit DAC operating up to 1GSPS. The AD9858 uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sine wave at up to 400+ MHz.

FEATURES
    1 GSPS internal clock speed
    Up to 2 GHz input clock (selectable divide-by-2)
    Integrated 10-bit D/A converter
    Phase noise < 145 dBc/Hz @ 1 kHz offset Output frequency = 100 MHz (DAC output)
    32-bit programmable frequency register
    Simplified 8-bit parallel and SPI® serial control interface
    Automatic frequency sweeping capability
    4 frequency profiles
    3.3 V power supply
    Power dissipation 2 W typical
    Integrated programmable charge pump and phase frequency detector with fast lock circuit
    Isolated charge pump supply up to 5 V
    Integrated 2 GHz mixer

APPLICATIONS
    VHF/UHF LO synthesis
    Tuners
    Instrumentation
    Agile clock synthesis
    Cellular base station hopping synthesizer
    Radar
    Sonet/SDH clock synthesis