Crystal Oscillator Core: Frequency Range 1 MHz to 200 MHz

Q: What is the difference between a crystal oscillator core and a complete oscillator module?

The crystal oscillator core is just the quartz resonator that requires external circuitry (oscillator IC) to function, while a complete oscillator module includes the resonator, sustaining circuitry, and output buffer in one package.

Q: Why is quartz used instead of other materials for oscillator cores?

Quartz exhibits excellent piezoelectric properties with low temperature coefficient, high Q-factor, and long-term stability, making it ideal for precision frequency control applications.

Component Specifications

Definition

The Crystal Oscillator Core is a piezoelectric quartz crystal resonator that generates precise electrical oscillations at a specific frequency when subjected to an alternating electric field. It serves as the fundamental frequency-determining element in oscillator integrated circuits (ICs) and amplifier circuits, providing exceptional frequency stability, low phase noise, and high Q-factor for timing, clocking, and synchronization applications in electronic systems.

Working Principle

Operates on the piezoelectric effect where mechanical vibrations of a precisely cut quartz crystal slab generate stable electrical oscillations at its natural resonant frequency when excited by an AC voltage. The crystal's mechanical resonance (determined by its physical dimensions and cut) creates an electrical resonance circuit with minimal frequency drift over temperature and time.

Materials

AT-cut or SC-cut synthetic quartz crystal (SiO₂) with vacuum-deposited silver or gold electrodes, hermetically sealed in metal (Kovar) or ceramic packages with inert gas (nitrogen) filling.

Technical Parameters

Parameter	Typical range	Notes & selection driver
ESR	10 Ω to 100 Ω
Aging	<±5 ppm/year
Drive Level	10 μW to 100 μW
Frequency Range	1 MHz to 200 MHz
Load Capacitance	8 pF to 32 pF
Frequency Tolerance	±10 ppm to ±100 ppm
Temperature Stability	±10 ppm to ±50 ppm (-40°C to +85°C)

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

Standards

IEC 60122-1, IEC 60444, MIL-PRF-3098

Parent Products

This component is used in the following industrial products

Oscillator IC / Amplifier Circuit

Integrated circuit that generates and amplifies stable reference frequency signals

View Product Details

Engineering Analysis

Risks & Mitigation

Frequency drift due to temperature changes
Mechanical shock damage
Contamination from outgassing
Electromigration at high drive levels

FMEA Triads

Trigger: Excessive mechanical stress during mounting
Failure: Crystal fracture or frequency shift
Mitigation: Use compliant mounting pads and controlled torque during assembly

Trigger: Moisture ingress through seal failure
Failure: Frequency drift and increased aging
Mitigation: Implement hermetic sealing with leak testing and moisture getters

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Frequency tolerance per IEC 60122-1, Class 1: ±50 ppm maximum

Test Method

Frequency measurement at 25°C with specified load capacitance using network analyzer per IEC 60444

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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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Crystal Oscillator Core

Manufacturer profiles associated with Crystal Oscillator Core.

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Frequently Asked Questions

What is the difference between a crystal oscillator core and a complete oscillator module?