Clock Distribution ICs — RVX01AME & RVX02ME

RVX01AME — HMC7043 Alternative

14 Outputs · Sub-ps Jitter · 3.2 GHz Input · JESD204B SYSREF · QFN84

Why HMC7043 Is No Longer Available

HMC7043, originally developed by Hittite Microwave and acquired by Analog Devices, is classified as a controlled dual-use component. Its combination of sub-ps jitter, high output count, and JESD204B capability makes it a core component in phased-array radar and EW systems — and therefore subject to strict export licensing. Many customers report denial or indefinite delay of export applications. RVX01AME is designed to fill this gap with no export restriction.

RVX01AME — Technical Overview

Conclusion: RVX01AME is a 14-output clock distribution IC with sub-picosecond additive jitter, capable of handling input frequencies up to 3.2 GHz. It distributes a high-quality reference clock to up to 14 independently configurable outputs with precise phase and divider control — essential for multi-channel synchronization in radar, JESD204B data converters, and software-defined radio (SDR) platforms.

Core Specifications — RVX01AME

• Output Channels: 14 independent outputs
• Max Input Frequency: 3.2 GHz
• Output Jitter: Sub-ps (additive)
• Interface Support: JESD204B SYSREF generation
• Package: QFN84
• Output Types: LVDS / HSTL (configurable per channel)
• Phase Adjustment: Per-output digital phase trim

Comparison: RVX01AME vs HMC7043

Application: JESD204B System Clock Distribution

JESD204B subclass 1 requires a system-wide SYSREF signal with deterministic phase relationship to the device clock. RVX01AME generates both: a low-jitter device clock on all 14 output pairs, plus SYSREF pulses synchronized to the clock edge. This enables deterministic latency and multi-device alignment across ADC and DAC arrays — a requirement in MIMO radar front-ends and wideband EW receivers.

The sub-ps additive jitter of RVX01AME preserves SNR in high-speed converter chains. A 12-bit ADC running at 3 GSPS loses roughly 1.7 effective bits for every decade increase in clock jitter above 50 fs RMS. Maintaining sub-ps jitter is therefore a hard system requirement, not a soft preference.

Application: Radar Synchronization

Phased-array radar requires all T/R modules to operate from a phase-coherent reference clock. RVX01AME's 14 outputs fan out from a single high-quality reference (up to 3.2 GHz) with matched propagation delay and per-output phase trim. Coherent signal processing — including SAR image formation, Doppler processing, and STAP (Space-Time Adaptive Processing) — depends on sub-ps clock phase coherence across channels. RVX01AME provides this at the board level without additional buffer stages that add jitter.

Application: Multi-Channel ADC/DAC Clock

High-speed data converter arrays in EW receivers, spectrum analyzers, and wideband SDR platforms require a single-source, low-jitter clock fanned out to each converter. RVX01AME replaces the HMC7043 in these designs with no performance penalty — and no supply risk.

RVX02ME — CDCM6208 Alternative

Low Power · 800 MHz / 640 MHz Input · 1.2 W · Base Station & SDR

Why CDCM6208 Replacements Are Needed

CDCM6208V1 (Texas Instruments) has experienced intermittent supply constraints driven by broad semiconductor demand cycles and TI's fab allocation policy. Additionally, for customers in markets with US technology export restrictions, CDCM6208 may require EAR licensing in certain end-use configurations. RVX02ME offers a reliable, low-power alternative.

RVX02ME — Technical Overview

Conclusion: RVX02ME is a low-power clock distribution IC with 800 MHz and 640 MHz input support, designed to replace CDCM6208V1 in telecom base station and SDR platform applications. Its 1.2 W total power consumption makes it suitable for thermally constrained blade and module designs where per-board power budget is a hard constraint.

Core Specifications — RVX02ME

• Input Frequency Options: 800 MHz / 640 MHz
• Total Power Consumption: 1.2 W
• Target Applications: 4G/5G base station, SDR platform, FDD/TDD radio
• Package: Refer to Radivix datasheet
• Replaces: CDCM6208V1 (Texas Instruments)

Comparison: RVX02ME vs CDCM6208V1

Application: Communication Base Station Clock

LTE and 5G NR base stations distribute a reference clock derived from GPS/GNSS or a synchronization network to all radio processing chains. RVX02ME accepts the 800 MHz or 640 MHz clock formats common in standard macro and micro base station architectures and fans them out with low jitter and reduced power vs the incumbent TI solution. In a multi-blade radio unit with 8–16 processing boards, the per-board power saving compounds significantly.

Application: SDR Platform Clock

Software-defined radio (SDR) platforms — including USRP-class devices, OpenAirInterface implementations, and custom FPGA-based radios — require a clean, stable reference clock for ADC/DAC and FPGA fabric. RVX02ME's low-jitter output and multiple channel support make it suitable as the clock hub for SDR daughter cards and integrated radio modules.

Frequently Asked Questions