High Channel Count JESD204B Daisy Chain Clock Reference Design for RADAR and 5G Wireless Testers TIDA-01024 (ACTIVE)

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Key Document

Description

High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports scaling up JESD204B synchronized clocks in daisy chain configuration. This design provides multichannel JESD204B clocks using TI’s LMK04828 clock jitter cleaner and LMX2594 wideband PLL with integrated VCOs to achieve clock-to-clock skew of <10 ps. This design is tested with TI’s ADC12DJ3200 EVMs at 3 GSPS, and a channel-to-channel skew of < 50 ps is achieved with improved SNR performance. All key design theories are described to guide users through the part selection process and design optimization. Finally, schematics, board layouts, hardware testing, and test results are included.

Features
  • High frequency (GSPS) sample clock generation
  • High channel count and scalable JESD204B compliant clock solution
  • Low phase noise clocking for RF sampling ADC/DAC
  • Configurable phase synchronization to achieve low skew in multi-channel system
  • Supports TI’s high-speed converter and capture cards (ADC12DJ3200EVM, TSW14J56 / TSW14J57)

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Design Guide

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TI Devices (18)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADC12DJ3200  12-bit, dual 3.2-GSPS or single 6.4-GSPS, RF-sampling analog-to-digital converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
CSD15571Q2  20V, N ch NexFET MOSFET™, single SON2x2, 19.2mOhm  MOSFETs  Sample & Buy Not Available
DS90LV028AQ-Q1  Automotive LVDS Dual Differential Line Receiver  Interface  Sample & Buy View Design Kits & Evaluation Modules
LM95233  ±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
LMK00304  3.1-GHz Differential Clock Buffer/Level Translator  Clock buffers  Sample & Buy View Design Kits & Evaluation Modules
LMK04828  Ultra-low jitter synthesizer & jitter cleaner  Clock jitter cleaners  Sample & Buy View Design Kits & Evaluation Modules
LMK61E2  Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
LMX2594  15 GHz Wideband PLLatinum™ RF Synthesizer with Phase Synchronization and JESD204B support  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
SN74CBTLV3257  4-channel, 2:1 analog switch with power-off protection  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G08  Single 2-Input Positive-AND Gate  Gate  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G53  Single Pole, Double-Throw (SPDT) Analog Switch or 2:1 Analog Multiplexer/Demultiplexer  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
TLV702  300mA Low-Iq Low-Dropout (LDO) Regulator for Portables  Power management  Sample & Buy View Design Kits & Evaluation Modules
TMUX1574  Low-capacitance, 2:1 (SPDT) 4-channel, powered-off protection switch with 1.8-V logic  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
TPS25925  5V, 5A, 30mΩ eFuse with Adjustable +/-15% Accurate Current Limit  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS54318  2.95V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A47  36-V, 1-A, 4.17-μVRMS, RF low-dropout (LDO) voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A8300  2A, Low-Dropout Voltage Regulator for High-Speed Communication Systems  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A90  500mA High-Accuracy Low-Noise Low-Dropout (LDO) Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADC12DJ3200 Download
CSD15571Q2 WSON (DQK)| 6 Download
DS90LV028AQ-Q1 Download Download
LM95233 Download Download
LMK00304 Download Download
LMK04828 Download Download
LMK61E2 Download Download
LMX2594 Download Download
SN74CBTLV3257 Download Download
Download Download
Download Download
Download Download
Download Download
Download Download
SN74LVC1G08 Download Download
Download Download
Download
Download Download
Download -
Download Download
Download Download
SN74LVC2G53 Download Download
Download Download
Download -
TLV702 Download Download
Download Download
TMUX1574 Download
Download
TPS25925 Download
TPS54318 Download Download
TPS7A47 Download Download
TPS7A8300 Download
Download -
TPS7A90 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 968 28 Nov 2017
Design files (12)
Title Type Size (KB) Date
ZIP 2080 22 Dec 2017
ZIP 6569 22 Dec 2017
ZIP 7976 22 Dec 2017
ZIP 16987 22 Dec 2017
PDF 4389 22 Dec 2017
PDF 7468 22 Dec 2017
PDF 644 22 Dec 2017
PDF 1082 22 Dec 2017
PDF 94 22 Dec 2017
PDF 193 22 Dec 2017
PDF 1228 22 Dec 2017
PDF 1785 22 Dec 2017
Related Tools & Software

Reference Designs  ( 3 )

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
ADC12DJ3200 12-bit, dual 3.2-GSPS or single 6.4-GSPS, RF-sampling ADC evaluation module  ADC12DJ3200EVM  Evaluation Modules & Boards 
Data capture/pattern generator: data converter EVM with 8 JESD204B lanes from 0.6-12.5Gbps  TSW14J56EVM  Evaluation Modules & Boards 

Software (1)



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