Overview

Features and Benefits

  • 1 GSPS internal clock speed
  • Up to 2 GHz input clock
    (selectable divide-by-2)
  • Integrated 10-bit DAC
  • Excellent phase noise and SFDR
  • 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
  • See data sheet for additional features

Product Details

The AD9858 is a direct digital synthesizer (DDS) featuring a 10-bit digital-to-analog converter (DAC) operating up to 1 GSPS. The AD9858 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 AD9858 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 AD9858 via parallel (8-bit) or serial loading formats. The AD9858 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 AD9858 also features a divide-by-2 on the clock input, allowing the external reference clock to be as high as 2 GHz.

The AD9858 is specified to operate over the extended industrial temperature range of –40°C to +85°C.

Applications
  • VHF/UHF LO synthesis
  • Tuners
  • Instrumentation
  • Agile clock synthesis
  • Cellular base station hopping synthesizers
  • Radars
  • SONET/SDH clock synthesis

Data Sheet, Rev. C, 2/08

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation

Application Notes (21)

Frequently Asked Questions (1)

Tools & Simulations

IBIS Models

AD9858 IBIS Model

Design Tools

ADIsimDDS (Direct Digital Synthesis)

ADIsimDDS uses mathematical equations to model and illustrate the overall performance of the selected device. ADIsimDDS calculates the required FTW, given the reference clock frequency and desired output frequency. This tool also models an estimate of the overall spectral performance, and allows the user to explore the effects of external reconstruction filters.

Reference Designs (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.