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  6. AD9834


Alternative Parts

Overview

Features and Benefits

  • Narrow-band SFDR >72 dB
  • 2.3 V to 5.5 V power supply
  • Output frequency up to 37.5 MHz
  • Sine output/triangular output
  • On-board comparator
  • 3-wire SPI® interface
  • Extended temperature range: −40°C to +105°C
  • See datasheet for additional features

Product Details

The AD9834 is a 75 MHz low power DDS device capable of producing high performance sine and triangular outputs. It also has an on-board comparator that allows a square wave to be produced for clock generation. Consuming only 20 mW of power at 3 V makes the AD9834 an ideal candidate for power-sensitive applications.

Capability for phase modulation and frequency modulation is provided. The frequency registers are 28 bits; with a 75 MHz clock rate, resolution of 0.28 Hz can be achieved. Similarly, with a 1 MHz clock rate, the AD9834 can be tuned to 0.004 Hz resolution. Frequency and phase modulation are affected by loading registers through the serial interface and toggling the registers using software or the FSELECT pin and PSELECT pin, respectively.

The AD9834 is written to using a 3-wire serial interface. This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards.

The device operates with a power supply from 2.3 V to 5.5 V. The analog and digital sections are independent and can be run from different power supplies, for example, AVDD can equal 5 V with DVDD equal to 3 V.

The AD9834 has a power-down pin (SLEEP) that allows external control of the power-down mode. Sections of the device that are not being used can be powered down to minimize the current consumption. For example, the DAC can be powered down when a clock output is being generated.

The part is available in a 20-lead TSSOP.

APPLICATIONS

  • Frequency stimulus/waveform generation
  • Frequency phase tuning and modulation
  • Low power RF/communications systems
  • Liquid and gas flow measurement
  • Sensory applications: proximity, motion, and defect detection
  • Test and medical equipment

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 (2)

Documentation & Resources

  • View All (60)
  • 3rd Party Solutions (1)
  • Data Sheets (1)
  • Application Notes (25)
  • User Guides (1)
  • Product Highlight (1)
  • Technical Books (1)
  • Frequently Asked Questions (1)
  • Circuit Note (1)
  • Technical Articles (26)
  • Webcasts (2)
  • Application Notes
    Frequently Asked Questions
    Technical Articles

    Tools & Simulations

    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 (2)

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD9834BRUZ Material Declaration Reliability Data 20-Lead TSSOP
    AD9834BRUZ-REEL Material Declaration Reliability Data 20-Lead TSSOP
    AD9834BRUZ-REEL7 Material Declaration Reliability Data 20-Lead TSSOP
    AD9834CRUZ Material Declaration Reliability Data 20-Lead TSSOP
    AD9834CRUZ-REEL7 Material Declaration Reliability Data 20-Lead TSSOP
    Wafer Fabrication Data

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    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.