AD9858BSVZ

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1. DESCRIPTION

The AD9858BSVZ is a direct digital synthesizer (DDS) featuring a 10-bit digital-to-analog converter (DAC) operating up to 1 GSPS. The AD9858BSVZ uses advanced DDS technology coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sine wave at up to 400 MHz. The AD9858BSVZ is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9858BSVZ via parallel (8-bit) or serial loading formats. The AD9858BSVZ contains an integrated charge pump (CP) and phase frequency detector (PFD) for synthesis applications requiring the combination of a high speed DDS along with phase-locked loop (PLL) functions. An analog mixer is also provided on chip for applications requiring the combination of a DDS, PLL, and mixer, such as frequency translation loops and tuners. The AD9858BSVZ also features a divide-by-2 on the clock input, allowing the external reference clock to be as high as 2 GHz. The AD9858BSVZ is specified to operate over the extended industrial temperature range of –40°C to +85°C. 

2. FEATURES

    1. 1 GSPS internal clock speed

    2. Up to 2 GHz input clock (selectable divide-by-2)

    3. Integrated 10-bit DAC

    4. Excellent phase noise and SFDR

    5. 32-bit programmable frequency register

    6. Simplified 8-bit parallel and SPI serial control interface

    7. Automatic frequency sweeping capability

    8. 4 frequency profiles

    9. 3.3 V power supply

  10. Power dissipation: 2 W typical

  11. Integrated programmable charge pump and phase frequency detector with fast lock circuit

  12. Isolated charge pump supply up to 5 V

  13. Integrated 2 GHz mixer

3. APPLICATIONS

    1. VHF/UHF LO synthesis

    2. Tuners

    3. Instrumentation

    4. Agile clock synthesis

    5. Cellular base station hopping synthesizers

    6. Radars

    7. SONET/SDH clock synthesis