Phase-Locked Loop (PLL) Component - Timing Generator

Product Specifications

Technical details and manufacturing context for Phase-locked loop

Definition

The phase-locked loop (PLL) is a critical electronic circuit used in timing generators to synchronize the phase and frequency of its output oscillator signal with a reference input signal. It ensures stable, precise clock generation, frequency synthesis, and jitter reduction for timing-sensitive operations. The PLL operates by comparing the phase of a voltage-controlled oscillator (VCO) output with the phase of an input reference signal using a phase detector. The resulting error voltage is filtered and used to adjust the VCO frequency, driving the phase error toward zero and locking the output frequency to the reference. This component is typically fabricated on semiconductor (silicon) substrates and is available in a QFN-24 package. Key parameters include a supply voltage range of 3.3–5.0 V DC, power consumption of 10–50 mW, input frequency range of 1–100 MHz, output frequency range of 10–1000 MHz, phase noise of -100 to -80 dBc/Hz at 10 kHz offset, lock time of 1–10 ms, operating temperature range of -40 to 85 °C, supply current of 5–20 mA, output level of 0–3.3 V (CMOS logic levels), and weight of 0.5–1.0 g. These values are directory reference ranges and must be confirmed for the specific model and application. The PLL is used in applications requiring precise timing, such as clock generation, frequency synthesis, and data recovery. When selecting a PLL, consider the required input and output frequency ranges, phase noise performance, lock time, and power consumption. Verify that the supply voltage and output level are compatible with your system. For industrial-grade operation, ensure the operating temperature range meets your environmental requirements. The package type and weight are relevant for mechanical integration. Always consult the legal manufacturer or supplier to confirm model-specific values and standards before procurement.

Working Principle

The PLL compares the phase of a voltage-controlled oscillator (VCO) output with the phase of an input reference signal using a phase detector. The resulting error voltage is filtered and used to adjust the VCO frequency, driving the phase error toward zero and locking the output frequency to the reference. This feedback loop ensures that the output signal maintains a fixed phase relationship with the reference, enabling precise frequency synthesis and jitter reduction.

Common Materials

Semiconductor (Silicon)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Supply Voltage	3.3–5.0 V DC	Operating range for core logic
Power Consumption	10–50 mW	Depends on output frequency and load
Input Frequency Range	1–100 MHz	Reference signal frequency
Output Frequency Range	10–1000 MHz	VCO tuning range
Phase Noise	-100–-80 dBc/Hz	At 10 kHz offset
Lock Time	1–10 ms	Time to achieve phase lock
Operating Temperature	-40–85 °C	Industrial grade
Supply Current	5–20 mA	At nominal supply voltage
Output Level	0–3.3 V	CMOS logic levels
Package Type	QFN-24	Standard footprint
Weight	0.5–1.0 g	Typical for QFN package

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 the phase difference between the input reference signal and the feedback signal from the VCO, producing an error voltage.

Material: Semiconductor
Loop Filter
Filters the error voltage from the phase detector to remove high-frequency noise and shape the loop dynamics, providing stability.

Material: Passive components (Resistors, Capacitors)
Voltage-Controlled Oscillator (VCO)
Generates the output signal whose frequency is controlled by the filtered error voltage from the loop filter.

Material: Semiconductor
Frequency Divider
Divides the VCO output frequency to provide feedback for comparison with the reference, enabling frequency multiplication.

Material: Semiconductor

Applied To / Applications

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

Timing generator

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Clock Management Unit

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Frequency Converter

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Manufacturers of Phase-locked loop

Manufacturer profiles associated with Phase-locked loop.

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Frequently Asked Questions

What is the typical supply voltage range for this PLL?

The directory lists a supply voltage range of 3.3–5.0 V DC for core logic. However, you must verify the exact operating range for the specific model and application with the legal manufacturer or supplier.

What is the input frequency range?

The reference signal frequency range is listed as 1–100 MHz. Confirm the actual input frequency limits for your chosen PLL model, as they may vary.

What is the output frequency range?

The VCO tuning range is listed as 10–1000 MHz. This is a directory reference; the actual output frequency range depends on the specific PLL model and external components.

What is the operating temperature range?

For industrial grade, the operating temperature range is listed as -40 to 85 °C. Verify that this range meets your application requirements and confirm with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (electronic component, not fluid handling)
other spec:	Frequency range: 1 Hz to 10 GHz (varies by model), Supply voltage: 1.8V to 5V, Phase noise: -80 dBc/Hz to -150 dBc/Hz at offset
temperature:	-40°C to +125°C (typical industrial range)

Phase-locked loop

Product Specifications

Applied To / Applications

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Frequently Asked Questions

What is the typical supply voltage range for this PLL?

What is the input frequency range?

What is the output frequency range?

What is the operating temperature range?

Data Basis

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