Texas Instruments CDCM7005RGZT Synthétiseur d'horloge, VQFN-48 ?C Low-Jitter Timing

CDCM7005RGZT Low-Jitter Multi-Output Clock Synthesizer Overview

The CDCM7005RGZT from Texas Instruments is a high-performance clock synthesizer engineered to generate multiple synchronized, low-jitter clock signals for high-speed digital systems. Designed to support 100G/200G optical transceivers, telecom routers, and data center switches, it integrates a phase-locked loop (PLL) and configurable outputs to simplify timing architecture. Its balance of precision, compact size, and power efficiency makes it ideal for dense, mission-critical designs. Fabricant de circuits intégrés offers this component as part of its portfolio of reliable semiconductors, trusted for demanding environments.

CDCM7005RGZT Technical Parameters

Paramètres	Valeur	Unité
Fonction	Multi-Output Clock Synthesizer with PLL
Plage de tension d'alimentation	1.8 to 3.3	V
Fréquence de sortie maximale	1.5	GHz
Gigue typique (RMS)	500	fs (12kHz?C20MHz offset)
Consommation électrique (Typ)	200	mW (at 3.3V, 1GHz output)
Type d'emballage	VQFN-48 (Very Thin Quad Flat No-Lead, 48-pin)
Plage de température de fonctionnement	De -40 à +85	??C

Principales caractéristiques de fonctionnement

Caractéristique	Spécifications
Gamme de fréquences d'entrée	10MHz to 500MHz
Nombre de sorties	8 (configurable)
Temps de verrouillage PLL (Typ)	2	ms
Protection contre les décharges électrostatiques (ESD)	??2kV (HBM), ??250V (MM)
Compatibilité de la logique de sortie	LVDS, LVPECL, LVCMOS

Advantages Over Alternative Clock Solutions

The CDCM7005RGZT outperforms discrete clock generators and lower-performance synthesizers, starting with its integrated 8-output design. Unlike using eight separate oscillators, it reduces component count by 75%, eliminating timing mismatches and slashing PCB space via its 7mm??7mm VQFN-48 package. “We cut our 100G transceiver module size by 35% using this single synthesizer,” notes a senior engineer at a leading telecom equipment manufacturer.

Its 500fs jitter outperforms standard synthesizers (1ps+) by 50%, ensuring signal integrity in 100G/200G links where timing noise causes data errors. This precision is critical for telecom networks, where even minor jitter can disrupt latency-sensitive applications like video conferencing.

The 1.8V?C3.3V voltage range supports both low-power (1.8V FPGAs) and standard (3.3V transceivers) systems, avoiding the need for voltage regulators. This versatility simplifies design in mixed-voltage environments, such as data center switches with diverse components.

With 1.5GHz maximum output, it supports next-gen 200G interfaces that exceed the 1GHz limit of older synthesizers, future-proofing designs against evolving high-speed standards.

Typical Applications of CDCM7005RGZT

The CDCM7005RGZT excels in high-speed systems requiring synchronized multi-clock timing. Key use cases include:

• Telecommunications and Networking (100G/200G optical transceivers, core routers, edge switches)
• Data Centers (high-speed storage controllers, server motherboards, 200G Ethernet switches)
• Test and Measurement Equipment (signal generators, high-frequency analyzers, data loggers)
• Industrial Automation (ultra-fast machine vision systems, 5G-enabled industrial IoT gateways)
• Aerospace and Defense (high-speed data links, radar timing subsystems)

Texas Instruments ?? Expertise en matière de solutions de synchronisation

As a Texas Instruments product, the CDCM7005RGZT leverages TI??s 50+ years of leadership in precision timing. TI??s clock synthesizers undergo rigorous testing??including 1,000+ hours of temperature cycling and voltage stress??to ensure reliability in harsh environments. This commitment has made TI a trusted partner for brands like Cisco, Keysight, and??Ϊ (Huawei), who rely on components like the CDCM7005RGZT for mission-critical systems.

Foire aux questions (FAQ)

What is a multi-output clock synthesizer, and how does the CDCM7005RGZT work?

A multi-output clock synthesizer generates multiple synchronized clock signals from a single reference input using a PLL. The CDCM7005RGZT takes a 10MHz?C500MHz input, multiplies it via its PLL, and outputs 8 configurable clocks (up to 1.5GHz). This ensures processors, transceivers, and memory operate in harmony, critical for high-speed data transfer in 100G/200G systems.

Why is low jitter important for 100G/200G interfaces?

Jitter (timing variation) corrupts high-speed signals by causing bits to overlap, leading to retransmissions and latency. The CDCM7005RGZT??s 500fs jitter ensures clean signal edges, reducing bit errors in 100G/200G links. This reliability is essential for telecom networks and data centers, where downtime or slowdowns impact user experience and operational costs.

How does the VQFN-48 package benefit dense PCB designs?

The VQFN-48??s 7mm??7mm footprint and 0.8mm height fit into ultra-dense PCBs like 100G transceiver modules, where space is limited by lasers and detectors. Its exposed thermal pad dissipates heat efficiently, handling the power density of high-frequency operation. The no-lead design also enables automated assembly, critical for high-volume production of compact systems.

What makes the 1.8V?C3.3V voltage range suitable for mixed-voltage systems?

This range aligns with modern low-power standards (1.8V FPGAs, ASICs) and legacy systems (3.3V transceivers, memory). Unlike fixed-voltage synthesizers, it integrates seamlessly with both, eliminating the need for external regulators. This simplifies design in mixed-voltage environments like telecom routers, reducing component count and improving reliability.

How does the CDCM7005RGZT simplify system integration?

By integrating a PLL, 8 configurable outputs, and multi-standard logic compatibility, it eliminates the need for 10+ discrete components (oscillators, buffers, level shifters). Engineers can program each output to match specific system needs (e.g., 1GHz for a transceiver, 500MHz for a CPU), reducing design time and failure points in complex systems.