Structured Manufacturing Data (2026)

Clock Data Recovery (CDR) Unit

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Clock Data Recovery (CDR) Unit used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Clock Data Recovery (CDR) Unit is characterized by the integration of Phase Detector and Loop Filter. In industrial production environments, manufacturers listed on CNFX commonly emphasize Silicon (Semiconductor) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Electronic circuit that extracts timing information from data streams to synchronize receiver with transmitter.

View Full Specifications Explore Manufacturing Sources

Product Specifications

Technical details and manufacturing context for Clock Data Recovery (CDR) Unit

Definition
A Clock Data Recovery (CDR) Unit is a critical component within Input/Output Controllers responsible for recovering the clock signal embedded within an incoming serial data stream. It synchronizes the receiver's internal clock with the transmitter's clock, enabling accurate sampling and interpretation of the data bits without requiring a separate clock transmission line.
Working Principle
The CDR unit uses a phase-locked loop (PLL) or delay-locked loop (DLL) architecture. It compares the phase of the incoming data transitions with the phase of a locally generated clock. A phase detector generates an error signal based on this comparison. A loop filter processes this error signal, which then adjusts a voltage-controlled oscillator (VCO) or a variable delay line to shift the phase/frequency of the local clock until it aligns precisely with the data transitions, effectively 'locking' onto the embedded clock.
Common Materials
Silicon (Semiconductor)
Technical Parameters
  • Maximum data rate supported by the CDR unit. (Gbps) Per Request
Components / BOM
  • Phase Detector
    Compares the phase of the incoming data signal with the phase of the internally generated clock, producing an error signal.
    Material: semiconductor
  • Loop Filter
    Filters the error signal from the phase detector to control the response and stability of the feedback loop.
    Material: semiconductor (passive/active components)
  • Voltage-Controlled Oscillator (VCO)
    Generates the local clock signal. Its frequency/phase is adjusted by the filtered error voltage to match the incoming data's clock.
    Material: semiconductor

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Clock Data Recovery (CDR) Unit.

clock data recovery unit for optical communication CDR circuit synchronization data streams phase detector loop filter VCO design silicon semiconductor timing extraction circuit receiver transmitter synchronization electronic component

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Input/Output Controllers
View system integration details
Physical Layer Interface (PHY)
View system integration details
Communication PHY (Physical Layer)
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (electronic component, not fluidic)
other spec: Data Rate Range: 1 Mbps to 28 Gbps, Jitter Tolerance: < 0.3 UI, Power Supply: 3.3V ±10%
temperature: -40°C to +85°C (industrial grade), -40°C to +125°C (extended)
Media Compatibility
✓ Fiber Optic Communication Systems ✓ High-Speed Serial Data Links (e.g., PCIe, SATA) ✓ Telecom Backplane Applications
Unsuitable: High-EMI Environments without Proper Shielding (e.g., near heavy machinery or radio transmitters)
Sizing Data Required
  • Data Rate (bps)
  • Jitter Specification (UI or ps)
  • Input Signal Type (e.g., NRZ, PAM4)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Phase Lock Loop (PLL) instability
Cause: Voltage regulator noise, temperature-induced component drift, or aging capacitors affecting loop filter stability, leading to jitter accumulation and loss of clock synchronization.
Signal integrity degradation
Cause: PCB trace impedance mismatch, connector corrosion, or electromagnetic interference (EMI) from adjacent high-frequency circuits, causing bit errors and reduced data recovery accuracy.
Maintenance Indicators
  • Audible high-frequency whine or clicking from the unit indicating oscillator or power supply instability
  • Visual inspection reveals discoloration or bulging of surface-mount capacitors on the PCB, signaling imminent component failure
Engineering Tips
  • Implement periodic thermal imaging scans during operation to identify hot spots on voltage regulators and oscillators, allowing preemptive replacement before thermal runaway occurs.
  • Use conformal coating on the PCB and ensure proper EMI shielding gaskets are intact during reassembly to protect against environmental contaminants and electromagnetic interference.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ANSI/ESD S20.20 Electrostatic Discharge Control CE Marking (EU Directive 2014/35/EU Low Voltage Directive)
Manufacturing Precision
  • Jitter Tolerance: +/- 100 ps
  • Phase Lock Range: +/- 500 ppm
Quality Inspection
  • Bit Error Rate (BER) Test
  • Jitter Transfer Function (JTF) Measurement

Factories Producing Clock Data Recovery (CDR) Unit

Manufacturer profiles with relevant production capability in China

Add your factory

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Supply Chain Compatible Machinery & Devices

Industrial Smart Camera Module

Embedded vision system for industrial automation and quality inspection.

Explore Specs →
Industrial Wireless Power Transfer Module

Wireless power transfer module for industrial equipment applications

Explore Specs →
Industrial Smart Sensor Module

Modular industrial sensor with embedded processing and wireless connectivity

Explore Specs →
Surface Mount Resistor

Passive electronic component for current limiting and voltage division in circuits

Explore Specs →

Frequently Asked Questions

What is the primary function of a Clock Data Recovery (CDR) unit?

The CDR unit extracts timing information from incoming data streams to synchronize the receiver's clock with the transmitter's clock, ensuring accurate data recovery and minimizing errors in communication systems.

What are the key components in a CDR unit's Bill of Materials (BOM)?

The essential components include a Phase Detector to compare input signal phases, a Loop Filter to smooth the phase error signal, and a Voltage-Controlled Oscillator (VCO) to adjust the clock frequency based on the filtered signal.

How does a CDR unit benefit computer and optical product manufacturing?

It enables high-speed data transmission with reduced jitter and bit errors, critical for applications like fiber-optic networks, data centers, and electronic devices, improving reliability and performance in optical and electronic systems.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Computer, Electronic and Optical Product Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Clock Data Recovery (CDR) Unit

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for Clock Data Recovery (CDR) Unit.

Your business information is used only to process this request.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Clock Data Recovery (CDR) Unit?

Compare manufacturer profiles with relevant product and process capability.

Create Manufacturer Profile Contact Us
Previous Product
Clock Data Recovery (CDR) Circuit
Next Product
Clock Data Recovery Circuit