Multi-Channel JESD204B 15 GHz Clocking Reference Design for DSO, Radar and 5G Wireless Testers

(ACTIVE) TIDA-01021

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Key Document

Description

High speed multi-channel applications require precise clocking solutions capable of managing channel-to-channel skew in order to achieve optimal system SNR, SFDR, and ENOB. This reference design is capable of supporting two high speed channels on separate boards by utilizing TI’s LMX2594 wideband PLL with integrated VCOs to generate a 10 MHz to 15 GHz clock and SYSREF for JESD204B interfaces. The 10 KHz offset phase noise is < -104 dBc/Hz for a 15 GHz clock frequency.  By using TI’s ADC12DJ3200 high speed converter EVMs, a board-to-board clock skew of <10ps is achieved and a SNR of 49.6 dB with a 5.25 GHz input signal. All key design theories are described, guiding users through the part selection process and design optimization.  Finally, schematic, board layout, hardware testing, and results are also presented.

Features
  • Up to 15GHz sample clock generation
  • Multi-channel 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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Schematic/Block Diagram

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Design Guide

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Bill of Materials (BOM)

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TI Devices (17)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADC08DJ3200  8-Bit, Dual 3.2-GSPS or Single 6.4-GSPS, RF-Sampling Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Not Available View Design Kits & Evaluation Modules
ADC12DJ2700  12-Bit, Dual 2.7-GSPS or Single 5.4-GSPS, RF-Sampling Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Not Available View 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)  Not Available View Design Kits & Evaluation Modules
CSD15571Q2  20-V N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
DS90LV028AQ-Q1  Automotive LVDS Dual Differential Line Receiver  LVDS/M-LVDS/PECL  Sample & Buy Not Available
LMK00304  3.1-GHz Differential Clock Buffer/Level Translator  Clock buffers  Sample & Buy View Design Kits & Evaluation Modules
LMK04828  Ultra Low Jitter Synthesizer and 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  Not Available 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
SN74LVC1G125  Single Bus Buffer Gate With 3-State Outputs  Buffer/driver  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
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  36V, 1A, 4.17μVRMS, 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

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADC08DJ3200 Download
ADC12DJ2700 Download
ADC12DJ3200 Download
CSD15571Q2 WSON (DQK)| 6 Download
DS90LV028AQ-Q1 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
SN74LVC1G08 Download Download
Download Download
Download
Download Download
Download -
Download Download
Download Download
SN74LVC1G125 Download Download
Download Download
Download
Download Download
Download -
Download Download
Download Download
TLV702 Download Download
Download Download
TPS25925 Download
TPS54318 Download Download
TPS7A47 Download Download
TPS7A8300 Download
Download -

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (3)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 858 09 Jan 2018 256
PDF 2105 14 Jun 2017 103
PDF 6664 11 Jan 2016 286
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 5321 02 May 2017 629
Design files (12)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1786 04 Jan 2018 114
PDF 7470 04 Jan 2018 38
ZIP 6571 04 Jan 2018 32
ZIP 8944 04 Jan 2018 35
PDF 193 04 Jan 2018 25
PDF 1084 04 Jan 2018 23
PDF 696 06 Nov 2017 42
PDF 4389 06 Nov 2017 26
ZIP 2080 06 Nov 2017 13
ZIP 7976 06 Nov 2017 26
PDF 44 06 Nov 2017 31
PDF 644 06 Nov 2017 23
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 EVMs With 8 JESD204B Lanes From 0.6-12.5Gbps  TSW14J56EVM  Evaluation Modules & Boards 

Software (1)



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