SBASAS1A
November 2023 – March 2024
DAC39RF12
,
DAC39RFS12
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: Bandwidth and DC Linearity
6.12
Typical Characteristics: Single Tone Spectra
6.13
Typical Characteristics: Dual Tone Spectra
6.14
Typical Characteristics: Noise Spectral Density
6.15
Typical Characteristics: Linearity Sweeps
6.16
Typical Characteristics: Modulated Waveforms
6.17
Typical Characteristics: Phase and Amplitude Noise
6.18
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
7.4.2.2.2
12-bit Formats
7.4.2.2.3
8-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
Eye Scan Procedure
8.1.4
Pre/Post Cursor Analysis Procedure
8.1.5
Understanding Dual Edge Sampling Modes
8.1.6
Sleep and Disable Modes
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Transmitter Design Procedure
8.2.2.1
Detailed Clocking Subsystem Design Procedure
8.2.2.1.1
Example 1: SWAP-C Optimized
8.2.2.1.2
Example 2: Improved Phase Noise LMX2820 with External VCO
8.2.2.1.3
Example 3: Discrete Analog PLL for Best DAC Performance
8.2.2.1.4
12 GHz Clock Generation
8.2.3
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
sbasas1a_oa
sbasas1a_pm
8.2
Typical Application