SBASB20
September 2024
DDS39RF10
,
DDS39RFS10
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device Comparison
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics - DC Specifications
6.6
Electrical Characteristics - AC Specifications
6.7
Electrical Characteristics - Power Consumption
6.8
Timing Requirements
6.9
Switching Characteristics
6.10
SPI and FRI Timing Diagrams
6.11
Typical Characteristics: Single Tone Spectra
6.12
Typical Characteristics: Dual Tone Spectra
6.13
Typical Characteristics: Power Dissipation and Supply Currents
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagrams
7.3
Feature Description
7.3.1
DAC Output Modes
7.3.1.1
NRZ Mode
7.3.1.2
RTZ Mode
7.3.1.3
RF Mode
7.3.1.4
DES Mode
7.3.2
DAC Core
7.3.2.1
DAC Output Structure
7.3.2.2
Full-Scale Current Adjustment
7.3.3
DEM and Dither
7.3.4
Offset Adjustment
7.3.5
Clocking Subsystem
7.3.5.1
SYSREF Frequency Requirements
7.3.5.2
SYSREF Position Detector and Sampling Position Selection (SYSREF Windowing)
7.3.6
Digital Signal Processing Blocks
7.3.6.1
Digital Upconverter (DUC)
7.3.6.1.1
Interpolation Filters
7.3.6.1.2
Numerically Controlled Oscillator (NCO)
7.3.6.1.2.1
Phase-Continuous NCO Update Mode
7.3.6.1.2.2
Phase-coherent NCO Update Mode
7.3.6.1.2.3
Phase-sync NCO Update Mode
7.3.6.1.2.4
NCO Synchronization
7.3.6.1.2.4.1
JESD204C LSB Synchonization
7.3.6.1.2.5
NCO Mode Programming
7.3.6.1.3
Mixer Scaling
7.3.6.2
Channel Bonder
7.3.6.3
DES Interpolator
7.3.7
JESD204C Interface
7.3.7.1
Deviation from JESD204C Standard
7.3.7.2
Transport Layer
7.3.7.3
Scrambler and Descrambler
7.3.7.4
Link Layer
7.3.7.5
Physical Layer
7.3.7.6
Serdes PLL Control
7.3.7.7
Serdes Crossbar
7.3.7.8
Multi-Device Synchronization and Deterministic Latency
7.3.7.8.1
Programming RBD
7.3.7.9
Operation in Subclass 0 Systems
7.3.7.10
Link Reset
7.3.8
Alarm Generation
7.4
Device Functional Modes
7.4.1
DUC and DDS Modes
7.4.2
JESD204C Interface Modes
7.4.2.1
JESD204C Interface Modes
7.4.2.2
JESD204C Format Diagrams
7.4.2.2.1
16-bit Formats
7.4.3
NCO Synchronization Latency
7.4.4
Data Path Latency
7.5
Programming
7.5.1
Using the Standard SPI Interface
7.5.1.1
SCS
7.5.1.2
SCLK
7.5.1.3
SDI
7.5.1.4
SDO
7.5.1.5
Serial Interface Protocol
7.5.1.6
Streaming Mode
7.5.2
Using the Fast Reconfiguration Interface
7.5.3
SPI Register Map
8
Application and Implementation
8.1
Application Information
8.1.1
Startup Procedure for DUC/Bypass Mode
8.1.2
Startup Procedure for DDS Mode
8.1.3
Understanding Dual Edge Sampling Modes
8.1.4
Eye Scan Procedure
8.1.5
Pre/Post Cursor Analysis Procedure
8.1.6
Sleep and Disable Modes
8.2
Typical Application
8.2.1
S-Band Radar Transmitter
8.2.2
Design Requirements
8.2.3
Detailed Design Procedure
8.2.4
Detailed Clocking Subsystem Design Procedure
8.2.4.1
Example 1: SWAP-C Optimized
8.2.4.2
Example 2: Improved Phase Noise LMX2820 with External VCO
8.2.4.3
Example 3: Discrete Analog PLL for Best DAC Performance
8.2.4.4
10GHz Clock Generation
8.2.5
Application Curves
8.3
Power Supply Recommendations
8.3.1
Power Up and Down Sequence
8.4
Layout
8.4.1
Layout Guidelines and Example
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
ACL|256
MPBGAY8
ACK|256
MPBGAW1B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbasb20_oa
sbasb20_pm
2
Applications
Satellite communications (SATCOM)
Phased array antenna systems
Synthetic aperture radar (SAR) exciter
Wireless communications testers
Arbitrary waveform generator (AWG)
Agile, low phase noise LO generation