SBASB21 September   2024 DDS39RF12 , DDS39RFS12

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics - DC Specifications
    6. 6.6  Electrical Characteristics - AC Specifications
    7. 6.7  Electrical Characteristics - Power Consumption
    8. 6.8  Timing Requirements
    9. 6.9  Switching Characteristics
    10. 6.10 SPI and FRI Timing Diagrams
    11. 6.11 Typical Characteristics: Single Tone Spectra
    12. 6.12 Typical Characteristics: Dual Tone Spectra
    13. 6.13 Typical Characteristics: Power Dissipation and Supply Currents
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 DAC Output Modes
        1. 7.3.1.1 NRZ Mode
        2. 7.3.1.2 RTZ Mode
        3. 7.3.1.3 RF Mode
        4. 7.3.1.4 DES Mode
      2. 7.3.2 DAC Core
        1. 7.3.2.1 DAC Output Structure
        2. 7.3.2.2 Full-Scale Current Adjustment
      3. 7.3.3 DEM and Dither
      4. 7.3.4 Offset Adjustment
      5. 7.3.5 Clocking Subsystem
        1. 7.3.5.1 SYSREF Frequency Requirements
        2. 7.3.5.2 SYSREF Position Detector and Sampling Position Selection (SYSREF Windowing)
      6. 7.3.6 Digital Signal Processing Blocks
        1. 7.3.6.1 Digital Upconverter (DUC)
          1. 7.3.6.1.1 Interpolation Filters
          2. 7.3.6.1.2 Numerically Controlled Oscillator (NCO)
            1. 7.3.6.1.2.1 Phase-Continuous NCO Update Mode
            2. 7.3.6.1.2.2 Phase-coherent NCO Update Mode
            3. 7.3.6.1.2.3 Phase-sync NCO Update Mode
            4. 7.3.6.1.2.4 NCO Synchronization
              1. 7.3.6.1.2.4.1 JESD204C LSB Synchonization
            5. 7.3.6.1.2.5 NCO Mode Programming
          3. 7.3.6.1.3 Mixer Scaling
        2. 7.3.6.2 Channel Bonder
        3. 7.3.6.3 DES Interpolator
      7. 7.3.7 JESD204C Interface
        1. 7.3.7.1  Deviation from JESD204C Standard
        2. 7.3.7.2  Transport Layer
        3. 7.3.7.3  Scrambler and Descrambler
        4. 7.3.7.4  Link Layer
        5. 7.3.7.5  Physical Layer
        6. 7.3.7.6  Serdes PLL Control
        7. 7.3.7.7  Serdes Crossbar
        8. 7.3.7.8  Multi-Device Synchronization and Deterministic Latency
          1. 7.3.7.8.1 Programming RBD
        9. 7.3.7.9  Operation in Subclass 0 Systems
        10. 7.3.7.10 Link Reset
      8. 7.3.8 Alarm Generation
    4. 7.4 Device Functional Modes
      1. 7.4.1 DUC and DDS Modes
      2. 7.4.2 JESD204C Interface Modes
        1. 7.4.2.1 JESD204C Interface Modes
        2. 7.4.2.2 JESD204C Format Diagrams
          1. 7.4.2.2.1 16-bit Formats
      3. 7.4.3 NCO Synchronization Latency
      4. 7.4.4 Data Path Latency
    5. 7.5 Programming
      1. 7.5.1 Using the Standard SPI Interface
        1. 7.5.1.1 SCS
        2. 7.5.1.2 SCLK
        3. 7.5.1.3 SDI
        4. 7.5.1.4 SDO
        5. 7.5.1.5 Serial Interface Protocol
        6. 7.5.1.6 Streaming Mode
      2. 7.5.2 Using the Fast Reconfiguration Interface
      3. 7.5.3 SPI Register Map
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Startup Procedure for DUC/Bypass Mode
      2. 8.1.2 Startup Procedure for DDS Mode
      3. 8.1.3 Understanding Dual Edge Sampling Modes
      4. 8.1.4 Eye Scan Procedure
      5. 8.1.5 Pre/Post Cursor Analysis Procedure
      6. 8.1.6 Sleep and Disable Modes
    2. 8.2 Typical Application
      1. 8.2.1 S-Band Radar Transmitter
      2. 8.2.2 Design Requirements
      3. 8.2.3 Detailed Design Procedure
      4. 8.2.4 Detailed Clocking Subsystem Design Procedure
        1. 8.2.4.1 Example 1: SWAP-C Optimized
        2. 8.2.4.2 Example 2: Improved Phase Noise LMX2820 with External VCO
        3. 8.2.4.3 Example 3: Discrete Analog PLL for Best DAC Performance
        4. 8.2.4.4 10GHz Clock Generation
      5. 8.2.5 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power Up and Down Sequence
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines and Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.13 Typical Characteristics: Power Dissipation and Supply Currents

Typical values at TA = +25°C and nominal supply voltages, IFS_SWITCH = 20.5mA, 2 DACs = DDS39RF12, 1 DAC = DDS39RFS12, except where noted.

DDS39RF12 DDS39RFS12 Power Dissipation vs Clock Frequency and Digital Mode
Dual DAC, IFS_SWITCH = 20.5mA
Figure 6-44 Power Dissipation vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 Power Dissipation vs Clock Frequency and Digital Mode
Single DAC, IFS_SWITCH = 20.5mA
Figure 6-46 Power Dissipation vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 VDDA18 Current vs Clock Frequency and DAC Mode
Independent of JMODE and Interpolation
Figure 6-48 VDDA18 Current vs Clock Frequency and DAC Mode
DDS39RF12 DDS39RFS12 VEEM18 Current vs Clock Frequency and Output Current
Independent of JMODE and Interpolation
Figure 6-50 VEEM18 Current vs Clock Frequency and Output Current
DDS39RF12 DDS39RFS12 VDDCLK Current vs Clock Frequency
Independent of JMODE and Interpolation
Figure 6-52 VDDCLK Current vs Clock Frequency
DDS39RF12 DDS39RFS12 VDDR18 Current vs Clock Frequency and Interface Mode
Dependent on # of Serdes and baud rate
Figure 6-54 VDDR18 Current vs Clock Frequency and Interface Mode
DDS39RF12 DDS39RFS12 VDDDIG Current vs Clock Frequency and Digital Mode
Dual DAC Device
Figure 6-56 VDDDIG Current vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 VDDDIG Current vs Clock Frequency and DAC Mode
Dual DAC Device
Figure 6-58 VDDDIG Current vs Clock Frequency and DAC Mode
DDS39RF12 DDS39RFS12 Power Dissipation vs Clock Frequency and Digital Mode
Dual DAC, IFS_SWITCH = 41mA
Figure 6-45 Power Dissipation vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 Power Dissipation vs Clock Frequency and Digital Mode
Single DAC, IFS_SWITCH = 41mA
Figure 6-47 Power Dissipation vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 VDDCLK18 Current vs Clock Frequency
Independent of JMODE, interpolation, and single/dual DAC device
Figure 6-49 VDDCLK18 Current vs Clock Frequency
DDS39RF12 DDS39RFS12 VDDLx Current vs Clock Frequency
Independent of JMODE and Interpolation
Figure 6-51 VDDLx Current vs Clock Frequency
DDS39RF12 DDS39RFS12 VDDE Current vs Clock Frequency
Independent of JMODE and Interpolation
Figure 6-53 VDDE Current vs Clock Frequency
DDS39RF12 DDS39RFS12 VDDT Current vs Clock Frequency and Interface Mode
Dependent on # of Serdes and baud rate
Figure 6-55 VDDT Current vs Clock Frequency and Interface Mode
DDS39RF12 DDS39RFS12 VDDDIG Current vs Clock Frequency and Digital Mode
Single DAC Device
Figure 6-57 VDDDIG Current vs Clock Frequency and Digital Mode
DDS39RF12 DDS39RFS12 VDDDIG Current vs Clock Frequency and DAC Mode
Single DAC Device
Figure 6-59 VDDDIG Current vs Clock Frequency and DAC Mode