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AD5930:  Programmable Frequency Sweep and Output Burst Waveform Generator

The AD5930 is a waveform generator with programmable frequency sweep and output burst capability. Utilizing embedded digital processing allowing enhanced frequency control the device generates synthesized analog or digital frequency-stepped waveforms. Because frequency profiles are preprogrammed continuous write cycles are eliminated, thereby freeing up valuable DSP/µController resources. ...More

AD5930:  Programmable Frequency Sweep and Output Burst Waveform Generator

Product Description

The AD5930 is a waveform generator with programmable frequency sweep and output burst capability. Utilizing embedded digital processing allowing enhanced frequency control the device generates synthesized analog or digital frequency-stepped waveforms. Because frequency profiles are preprogrammed continuous write cycles are eliminated, thereby freeing up valuable DSP/µController resources. Waveforms start from a known phase and are incremented phase continuously allowing phase shifts to be easily determined.

The AD5930 can be operated in three modes. In continuous output mode the device outputs the required frequency for a defined length of time and then steps to the next frequency. The length of time the device outputs a particular frequency can be either preprogrammed and the device increments the frequency automatically or alternatively can be incremented externally via the CTRL pin. In Burst mode, the device outputs it’s frequency for a length of time and then returns to midscale for a further predefined length of time before stepping to the next frequency. In MSB mode a digital output is generated.

To program the device, the user enters the start frequency, the increment step size, the number of increments to be made and the time interval the part stays at each frequency. The frequency profile can be initiated by toggling the CTRL pin.

A number of different sweep profiles are offered. Frequencies can be stepped in triangular-sweep mode continuously sweeping up and down through the frequency range or in saw-sweep mode sweeping up but returning to the initial frequency before initiating the sweep again. In addition a single frequency or burst can generate without any sweep.

The AD5930 is written to via a 3-wire serial interface, which operates at clock rates up to 40 MHz. The device operates with a power supply from 2.3 V to 5.5 V and has a standby function which allows sections of the device that are not being used to be powered down.

The AD5930 is available in a 20-lead TSSOP package.

Applications

  • Frequency Sweeping/Radar
  • Network/Impedance Measurements
  • Incremental Frequency stimulus
  • Sensory Applications—Proximity and Motion BFSK
  • Frequency Bursting/Pulse Trains

    • 1 Protected by US Patent Number 6747583, other patents pending.

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    • Programmable frequency profile No external components necessary
    • Output frequency up to 25 MHz
    • Pre-programmable frequency profile minimizes number of DSP/µcontroller writes Sinusoidal/triangular/square wave outputs
    • Automatic or single pin control of frequency stepping
    • Burst and listen capability
    • Waveform starts at known phase Increments at 0° phase or phase continuously
    • Power-down mode: 20 µA
    • Power supply: 2.3 V to 5.5 V
    • Automotive temperature range:
      −40°C to +125°C
    • 20-lead pb-free TSSOP
    • Compliance Range (V): 0.8V
    • FS Iout (mA nom): 3.1mA
    • I Supply total (max): 8mA
    • I/O Interface: Serial
    • Master fclk : 50MHz
    • Nominal Supply (V): Single(+2.3 to +5.5)
    • On-Board Comparator: No
    • REFCLK Multiplier: No
    • Resolution (Bits): 10bit

    Functional Block Diagram for AD5930

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    AD9850 125MHz 10 32 Single(+3.3), Single(+5) 96mA 20 1.5 No Yes Parallel, Serial $12.14 CMOS, 125 MHz Serial/Byte-Parallel Input, Complete DDS
    AD9851 180MHz 10 32 Single(+3), Single(+3.3), Single(+3.6), Single(+5) 130mA 20 1.5 Yes Yes Parallel, Serial $13.56 180 MHz Complete DDS
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    AD9958 500MHz 10 32 Multi(+1.8, +3.3) 105mA 10 2.3 Yes - Serial $20.48 2-Channel 500 MSPS DDS with 10-Bit DACs
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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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.