Texas Instruments TPS54318RTE | Demoboard TIDA-01023

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 high channel count JESD204B synchronized clocks using one master and multiple slave clocking devices. 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)

Typical applications

• Active antenna system mMIMO (AAS)/Macro remote radio unit (RRU)/Wireless communications test equipment

More information

• Datasheet
• IC product information