Clock Synchronizer Component for Data Interface Timing

Product Specifications

Technical details and manufacturing context for Clock Synchronizer

Definition

A clock synchronizer is a critical component within a Data Interface Controller that maintains precise timing coordination between various subsystems, ensuring data transmission occurs at synchronized intervals to prevent errors, data loss, or corruption during communication between devices or modules. It generates and distributes a master clock signal to all components in the data interface system. Using phase-locked loops (PLLs) or delay-locked loops (DLLs), it aligns local clock signals with the master reference, compensating for propagation delays and ensuring all data transfers occur at precisely coordinated timing intervals. The device is typically fabricated on a silicon semiconductor with copper interconnects and mounted on a ceramic substrate. It supports an input and output frequency range of 1–125 MHz, with output skew between any two outputs of ±50 ps and cycle-to-cycle jitter of ≤30 ps peak-to-peak at 125 MHz. It operates from a 3.3 V ±10% supply and requires decoupling capacitors. The industrial-grade operating temperature range is -40 to 85 °C. Input and output logic levels are LVCMOS/LVTTL, with output drive strength of 4–16 mA. Lock time from power-up to stable output is ≤10 ms. The device is available in a QFN-32 package (5×5 mm, 0.5 mm pitch). It provides ESD protection of ±2 kV (HBM) on all pins, referenced to IEC 61000-4-2, and is 100% lead-free soldering compliant with RoHS 2011/65/EU. The output frequency range is programmable via I2C. For wider input frequency ranges, an external VCXO may be required. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The clock synchronizer generates and distributes a master clock signal to all components in the data interface system. It uses phase-locked loops (PLLs) or delay-locked loops (DLLs) to align local clock signals with the master reference, compensating for propagation delays and ensuring all data transfers occur at precisely coordinated timing intervals. The PLL/DLL continuously adjusts the phase and frequency of local oscillators to match the reference, minimizing skew and jitter. The device accepts a reference clock input, multiplies or divides it as needed, and outputs multiple synchronized clock signals. It also provides a lock indicator to signal when the output is stable. The synchronization process is essential for high-speed data interfaces where timing errors can cause data corruption.

Common Materials

Silicon semiconductor, Copper interconnects, Ceramic substrate

Technical Parameters

Parameter	Typical range	Notes & selection driver
Input Frequency Range	1–125 MHz	Wider range requires external VCXO
Output Frequency Range	1–125 MHz	Programmable via I2C
Output Skew	±50 ps	Between any two outputs
Cycle-to-Cycle Jitter	≤30 ps	Peak-to-peak at 125 MHz
Supply Voltage	3.3 ±10% V	Decoupling caps required
Operating Temperature	-40–85 °C	Industrial grade
Input Logic Level	LVCMOS/LVTTL	Single-ended, 3.3V compatible
Output Logic Level	LVCMOS/LVTTL	Drive strength 4–16 mA
Lock Time	≤10 ms	From power-up to stable output
Package Type	QFN-32	5×5 mm, 0.5 mm pitch
ESD Protection	±2 kV	HBM on all pinsIEC 61000-4-2
RoHS Compliance	100 %	Lead-free solderingRoHS 2011/65/EU

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

Components / BOM

Phase Detector
Compares phase difference between reference and feedback signals

Material: Silicon semiconductor
Voltage Controlled Oscillator
Generates clock signal with frequency controlled by input voltage

Material: Silicon semiconductor
Loop Filter
Filters control voltage to stabilize the phase-locked loop

Material: Polymer dielectric
Lock Indicator
Signals when the loop has locked and the output clocks are stable.

Applied To / Applications

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

Data Interface Controller

View system integration details

Data Serializer

View system integration details

Manufacturers of Clock Synchronizer

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Frequently Asked Questions

What is the input frequency range of this clock synchronizer?

The input frequency range is 1–125 MHz. For wider ranges, an external VCXO may be required. Always confirm the exact range for your application with the manufacturer.

How is the output frequency programmed?

The output frequency range is programmable via I2C interface. The range is 1–125 MHz. Refer to the device datasheet for programming details.

What is the typical output skew and jitter?

The output skew between any two outputs is ±50 ps, and cycle-to-cycle jitter is ≤30 ps peak-to-peak at 125 MHz. These values are typical and should be verified for your specific operating conditions.

What are the power supply and temperature requirements?

The supply voltage is 3.3 V ±10%, and decoupling capacitors are required. The operating temperature range is -40 to 85 °C (industrial grade). Ensure your system meets these requirements.

Data Basis

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Preliminary Technical Classification

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voltage:	1.8V to 3.3V
temperature:	-40°C to +85°C
frequency range:	1Hz to 2.5GHz
jitter performance:	<100fs RMS

Clock Synchronizer

Product Specifications

Applied To / Applications

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