Clock Dividers/Multipliers: Supply Voltage 1.8V, 2.5V, 3.3V

Q: What is the difference between a clock divider and a clock multiplier?

A clock divider reduces the frequency of an input clock signal by an integer or fractional factor, while a clock multiplier increases it, typically using PLL technology to generate higher frequencies from a stable reference.

Q: How do clock dividers/multipliers improve system performance?

They enable precise clock distribution across different subsystems operating at varied speeds, reducing timing skew, minimizing electromagnetic interference (EMI), and optimizing power consumption by allowing components to run at their required frequencies.

Q: What are common applications of clock dividers/multipliers?

Used in microprocessors, FPGAs, communication devices (routers, switches), audio/video equipment, automotive electronics (ECUs), and industrial controllers for synchronization and frequency generation.

Component Specifications

Definition

Clock dividers/multipliers are integrated circuits or discrete logic components within clock management circuits that manipulate the frequency of an input clock signal. Dividers produce output frequencies that are integer or fractional divisions of the input frequency, while multipliers generate higher frequencies through phase-locked loop (PLL) or delay-locked loop (DLL) techniques. These components are critical for providing precise timing signals to various subsystems in digital electronics, ensuring proper synchronization and data integrity.

Working Principle

Clock dividers typically use digital counters or flip-flops to count input clock cycles and generate an output pulse after a predetermined number of cycles, effectively dividing the frequency. Clock multipliers employ phase-locked loops (PLLs) that compare the phase of a voltage-controlled oscillator (VCO) output with the input reference, adjusting the VCO to lock onto a harmonic multiple of the input frequency, thereby multiplying it. Fractional-N synthesizers enable non-integer multiplication/division by dynamically switching between division ratios.

Materials

Semiconductor materials (silicon, gallium arsenide for high-frequency applications), ceramic or plastic packaging (QFN, BGA, SOIC), gold or copper bonding wires, lead-free solder (SnAgCu).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Jitter	< 1 ps RMS
Package Type	QFN-24, BGA-36
Supply Voltage	1.8V, 2.5V, 3.3V
Division Ratios	1 to 4096 (integer), 1.5 to 511.75 (fractional)
Input Frequency Range	1 MHz to 2 GHz
Operating Temperature	-40°C to +85°C
Multiplication Factors	1 to 1000
Output Frequency Range	1 kHz to 3 GHz

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Clock Management Circuit

A specialized electronic circuit within a Graphics Interface Controller that generates, distributes, and synchronizes clock signals for various components.

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Engineering Analysis

Risks & Mitigation

Signal integrity degradation due to jitter or phase noise
Electromagnetic interference (EMI) from high-frequency operation
Thermal management issues in high-density circuits
Compatibility issues with legacy systems

FMEA Triads

Trigger: Poor PCB layout or inadequate decoupling
Failure: Excessive jitter leading to data corruption or system crashes
Mitigation: Follow manufacturer layout guidelines, use low-ESR capacitors near power pins, implement ground planes

Trigger: Overvoltage or electrostatic discharge (ESD)
Failure: Permanent damage to semiconductor junctions, rendering component non-functional
Mitigation: Incorporate ESD protection diodes, adhere to voltage specifications, use surge protection circuits

Trigger: Operating beyond specified temperature range
Failure: Frequency drift or complete failure due to thermal stress
Mitigation: Implement thermal vias, heatsinks, or active cooling; monitor temperature with sensors

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Frequency accuracy ±50 ppm, output skew < 100 ps

Test Method

Jitter measurement using phase noise analyzer, frequency verification with spectrum analyzer, functional testing with automated test equipment (ATE)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Clock Dividers/Multipliers

Manufacturer profiles associated with Clock Dividers/Multipliers.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between a clock divider and a clock multiplier?