AD9956:  400 MSPS 14-Bit DAC 48-Bit FTW 1.8 V CMOS DDS Based AgileRF™ Synthesizer

The AD9956 is Analog Devices’s first AgileRF synthesizer. The device is comprised of a DDS and PLL circuitry. The DDS features a 14-bit DAC operating up to 400 MSPS and a 48-bit frequency ...More

Two evaluation boards are available for the AD9956:

  • AD9956-VCO/PCB: Evaluation board with 2.4 GHz VCO and charge pump filter
  • AD9956/PCB: Evaluation Board with no VCO and unpopulated loop filter

    • AD9956:  400 MSPS 14-Bit DAC 48-Bit FTW 1.8 V CMOS DDS Based AgileRF™ Synthesizer

    Product Description

    The AD9956 is Analog Devices’s first AgileRF synthesizer. The device is comprised of a DDS and PLL circuitry. The DDS features a 14-bit DAC operating up to 400 MSPS and a 48-bit frequency tuning word. The PLL Circuitry includes a phase detector with scaleable 200 MHz inputs (pre-scalar inputs operate up to 650 MHz) and digital control over the charge pump current. The device also includes a 650 MHz PECL driver with programmable slew rates.The AD9956 uses advanced DDS technology, an internal high-speed, high performance D/A converter and an advance phase-detector/charge pump combination to enable the synthesis of digitally-programmable, frequency-agile analog output sinusoidal waveforms up to 2.7 GHz. The AD9956 is designed to provide fast frequency hopping and fine tuning resolution (48-bit frequency tuning word). Information is loaded into the AD9956 via a serial I/O port which has a device write speed of 25 MBit/sec. The AD9956 DDS block also supports a user defined linear sweep mode of operation.

    The AD9956 is specified to operate over the extended automotive range of −40°C to +125°C.

    Applications

  • Agile L.O. frequency synthesis
  • FM chirp source for radar and scanning systems
  • Automotive radars
  • Test and measurement equipment
  • Acousto-optic device drivers

    • Features

    • 400 MSPS Internal DDS Clock Speed
    • 48-bit tuning word
    • 14-bit Programmable Phase Offset
    • Integrated 14-bit DAC
      Excellent Dynamic Performance
      - 80 dB SFDR @ 160 MHz (±100 kHz
      Offset IOUT)
      25 MBit/sec-write Speed Serial I/O Control
    • 200 MHz Phase Detector Inputs
    • Programmable (1-16) phase detector 650 MHz pre-scalars (÷M, ÷N)
    • Programmable RF Prescaler (÷R) {R = 2, 4, 8}
    • 8 Phase/frequency Profiles
    • 1.8 V Supply for Device Operation
    • 3.3 V Supply for I/O and Charge Pump Output
    • Software Controlled Power-down
    • 48-lead LFCSP

    Diagrams

    AD9956 Diagram
    Functional Block Diagram for AD9956

    Specifications

    Compliance Range (V) 2.3V
    FS Iout (mA nom) 10mA
    I Supply total (max) n/a
    I/O Interface Serial
    Master fclk 400MHz
    Nominal Supply (V) Multi(+1.8, +3.3)
    On-Board Comparator No
    REFCLK Multiplier No
    Resolution (Bits) 14bit

    Explore Other Products

    Part# Master fclk Resolution (Bits) Tuning Word Width (bits) Nominal Supply (V) I Supply total (max) FS Iout (mA nom) Compliance Range (V) REFCLK Multiplier On-Board Comparator I/O Interface Price* (1000-4999) Product Description
    AD9913 250MHz 10 32 Single(+1.8) 63.5mA 4.6 0.8 Yes No Parallel, Serial $9.77 Low power 250 MSPS DDS with 10 bit DAC output
    AD9833 25MHz 10 28 Single(+2.3 to +5.5), Single(+2.5), Single(+2.7), Single(+3), Single(+3.3), Single(+3.6), Single(+5) 5.5mA 3 0.65 No No Serial $4.00 25 MHz, Serial Input, Programmable DDS Waveform Generator
    AD9831 25MHz 10 32 Single(+3.3), Single(+3.6), Single(+5) 15mA 4 1.5 No No Parallel $6.33 CMOS, 25 MHz Parallel Input DDS with On-Chip 10-Bit DAC & Sine Lookup Table
    AD9832 25MHz 10 32 Single(+3.3), Single(+3.6), Single(+5) 15mA 4 1.35 No No Serial $5.06 CMOS, 25 MHz Serial Input DDS with On-Chip 10-Bit DAC & Sine Lookup Table
    AD5930 50MHz 10 24 Single(+2.3 to +5.5) 8mA 3.1 0.8 No No Serial $6.38 Programmable Frequency Sweep and Output Burst Waveform Generator
    AD5932 50MHz 10 24 Single(+2.3 to +5.5) 8mA n/a n/a Yes No Serial $4.15 Programmable Single-Scan Waveform Generator
    AD9830 50MHz 10 32 Single(+5) 60mA 20 1 No No Parallel $11.08 CMOS, 50 MHz Parallel Load DDS with On-Chip 10-Bit DAC & Sine Lookup Table
    AD9835 50MHz 10 32 Single(+5) 40mA 4 1.35 No No Serial $5.82 CMOS, Serial Input, 50 MHz DDS with On-Chip 10-Bit DAC
    AD9834 75MHz 10 28 Single(+2.3 to +5.5), Single(+2.5), Single(+2.7), Single(+3), Single(+3.3), Single(+3.6), Single(+5) 8.7mA 3 0.8 No Yes Serial $5.01 Low Power, 50 MHz Serial Input DDS With On-Board Comparator
    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
    AD9852 300MHz 12 48 Single(+3.3) 922mA 20 1 Yes Yes Parallel, Serial $15.58 CMOS, 300 MSPS Complete DDS w/ Clock Multiplier
    AD9854 300MHz 12 48 Single(+3.3) 1210mA 10 1 Yes Yes Parallel, Serial $17.10 CMOS 300 MHz, Quadrature, Complete-DDS
    AD9859 400MHz 10 32 Multi(+1.8, +3.3) n/a 20 2.05 Yes No Serial $9.87 400 MSPS, 10-Bit, 1.8 V CMOS DDS
    AD9951 400MHz 14 32 Multi(+1.8, +3.3), Single(+1.8) n/a 10 2.05 Yes No Serial $13.90 400 MSPS 14-Bit, 1.8 V CMOS DDS
    AD9952 400MHz 14 32 Multi(+1.8, +3.3), Single(+1.8) n/a 10 2.05 Yes Yes Serial $15.68 400 MSPS, 14-Bit, 1.8 V, CMOS Direct Digital Synthesizer w/High Speed Comparator
    AD9953 400MHz 14 32 Multi(+1.8, +3.3), Single(+1.8) n/a 10 2.05 Yes No Serial $14.92 400 MSPS, 14-Bit DAC, 1.8 V CMOS Direct Digital Synthesizer w/ 1024x32 RAM
    AD9954 400MHz 14 32 Multi(+1.8, +3.3), Single(+1.8) n/a 10 2.05 Yes Yes Serial $17.45 400 MSPS, 14-Bit, 1.8V CMOS DDS w/ 1024x32 RAM, Linear Sweep Block, & Hi Speed Comparator
    AD9956 400MHz 14 48 Multi(+1.8, +3.3) n/a 10 2.3 No No Serial $17.45 400 MSPS, 14-Bit DAC, 48-Bit Freq Tuning Word, 1.8 V CMOS DDS Based AgileRF™ Synthesizer
    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
    AD9911 500MHz 10 32 Single(+1.8) 73mA 10 1.8 Yes - Serial $15.69 500 MSPS Direct Digital Synthesizer w/10-Bit DAC
    AD9959 500MHz 10 32 Multi(+1.8, +3.3) 180mA 10 2.3 Yes - Serial $37.59 -
    AD9858 1000MHz 10 32 Multi(+3.3, +5) n/a 40 3.8 No No Parallel, Serial $45.66 1 GSPS Direct Digital Synthesizer
    AD9910 1000MHz 14 32 Single(+1.8), Single(+3.3) n/a 20 0.5 Yes No Parallel, Serial $35.33 1 GSPS, 14-Bit, 3.3 V CMOS Direct Digital Synthesizer
    AD9912 1000MHz 14 48 Multi(+1.8, +3.3) 394mA - 0.5 Yes Yes Serial $37.70 1 GSPS 14-Bit, DDS with Spur Reduction Channels

    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
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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.

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