Structured Manufacturing Data (2026)

Phase-Locked Loop Circuit

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Phase-Locked Loop Circuit 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 Phase-Locked Loop Circuit is characterized by the integration of Phase Detector and Loop Filter. In industrial production environments, manufacturers listed on CNFX commonly emphasize Semiconductor silicon construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An electronic control system that generates an output signal whose phase is related to the phase of an input reference signal.

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Product Specifications

Technical details and manufacturing context for Phase-Locked Loop Circuit

Definition
A critical component within the Sync Logic Controller that synchronizes the phase and frequency of an output oscillator signal with a reference input signal, enabling precise timing, clock recovery, and frequency synthesis functions essential for stable system operation.
Working Principle
The PLL circuit compares the phase of the input reference signal with the phase of the output from a voltage-controlled oscillator (VCO) using a phase detector. The phase detector generates an error voltage proportional to the phase difference. This error voltage is filtered and applied to the VCO, adjusting its frequency to minimize the phase difference, thereby locking the output signal's phase and frequency to the input reference.
Common Materials
Semiconductor silicon, Copper, Dielectric materials
Technical Parameters
  • Lock range, capture range, phase noise, and jitter specifications (Hz) Per Request
Components / BOM
  • Phase Detector
    Compares phase difference between input and feedback signals
    Material: Semiconductor
  • Loop Filter
    Filters the phase detector output to control the VCO
    Material: Passive components (resistors, capacitors)
  • Voltage-Controlled Oscillator
    Generates output signal with frequency controlled by input voltage
    Material: Semiconductor, inductor, capacitor
  • Frequency Divider
    Divides VCO output frequency for feedback comparison
    Material: Semiconductor

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Phase-Locked Loop Circuit.

PLL Phase Lock Loop low jitter phase locked loop circuit voltage controlled oscillator PLL design frequency divider synchronization electronics phase detector loop filter components semiconductor silicon PLL manufacturing

Applied To / Applications

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

Sync Logic Controller
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
voltage: 1.8V to 5.5V (supply voltage range)
frequency: DC to 3GHz (operating frequency range)
phase noise: -100dBc/Hz at 1MHz offset (typical specification)
temperature: -40°C to +125°C (typical industrial range)
Media Compatibility
✓ digital communication systems ✓ frequency synthesizers ✓ clock recovery circuits
Unsuitable: high-vibration mechanical environments without proper mounting
Sizing Data Required
  • reference frequency input
  • desired output frequency
  • required phase jitter tolerance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Phase detector malfunction
Cause: Component aging, voltage spikes, or contamination leading to inaccurate phase comparison and loss of lock
VCO (Voltage-Controlled Oscillator) drift
Cause: Temperature variations, component degradation, or power supply instability causing frequency deviation
Maintenance Indicators
  • Unstable or erratic output frequency (audible as signal distortion or visual on oscilloscope)
  • Increased phase noise or jitter in the output signal (detectable with spectrum analyzer)
Engineering Tips
  • Implement temperature stabilization through proper thermal management and controlled environments
  • Use high-quality, low-drift components and maintain stable, clean power supply with proper filtering

Compliance & Manufacturing Standards

Reference Standards
IEC 60747-14-1: Semiconductor devices - Part 14-1: Semiconductor sensors - Pressure sensors ISO 9001:2015 Quality management systems - Requirements CE marking per EMC Directive 2014/30/EU for electromagnetic compatibility
Manufacturing Precision
  • Frequency stability: +/- 0.1% over operating temperature range
  • Phase noise: -100 dBc/Hz at 10 kHz offset from carrier
Quality Inspection
  • Jitter measurement test using spectrum analyzer
  • Lock range and capture range verification under varying temperature conditions

Factories Producing Phase-Locked Loop Circuit

Manufacturer profiles with relevant production capability in China

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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.

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Frequently Asked Questions

What are the primary applications of this Phase-Locked Loop circuit?

This PLL circuit is used in communication systems, data synchronization, clock recovery, frequency synthesis, and signal demodulation in computer and optical manufacturing applications.

How does the loop filter component affect PLL performance?

The loop filter determines stability, lock time, and noise rejection by smoothing the phase detector output before it reaches the voltage-controlled oscillator, crucial for maintaining signal integrity.

What materials ensure reliability in this PLL circuit?

Semiconductor silicon provides active components, copper enables low-resistance interconnects, and dielectric materials offer insulation and capacitance for stable high-frequency operation.

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.

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