Active Device(s): Frequency Range 1 MHz to 10 GHz

Component Specifications

Definition

Active devices in Voltage-Controlled Oscillators (VCOs) or Digitally Controlled Oscillators (DCOs) are semiconductor components that require external power to function and actively generate or control oscillation frequencies. These devices convert DC power into AC signals at specific frequencies determined by control voltages or digital inputs, forming the core of frequency generation circuits in RF, communication, and timing applications.

Working Principle

Active devices operate by using external power to amplify signals or generate oscillations through positive feedback mechanisms. In VCOs, they respond to voltage changes to vary frequency; in DCOs, they interpret digital codes to produce precise frequencies. Common principles include transistor-based amplification, varactor diode capacitance modulation, and digital-to-frequency conversion through phase-locked loops or direct digital synthesis techniques.

Materials

Semiconductor materials (silicon, gallium arsenide, silicon-germanium), doped substrates, metal interconnects (copper, aluminum), dielectric layers (silicon dioxide, silicon nitride), and packaging materials (ceramic, epoxy).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Phase Noise	-80 to -120 dBc/Hz at 10 kHz offset
Output Power	-10 to +10 dBm
Package Type	SMD (QFN, SOIC), Through-hole
Supply Voltage	3.3V or 5V DC
Tuning Voltage	0-5V or 0-10V
Frequency Range	1 MHz to 10 GHz
Temperature Range	-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 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Voltage-Controlled Oscillator (VCO) or Digitally Controlled Oscillator (DCO)

An electronic oscillator whose output frequency is controlled by an input voltage (VCO) or digital control word (DCO), generating a periodic signal used for timing and synchronization.

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Engineering Analysis

Risks & Mitigation

Thermal overstress
Electrostatic discharge damage
Frequency drift over temperature
Harmonic distortion
Electromagnetic interference

FMEA Triads

Trigger: Excessive junction temperature
Failure: Thermal runaway leading to permanent damage
Mitigation: Implement thermal management with heatsinks, ensure adequate airflow, use temperature sensors for monitoring

Trigger: Voltage spikes in control lines
Failure: Breakdown of semiconductor junctions
Mitigation: Add protection diodes, use proper filtering, implement voltage clamping circuits

Trigger: Manufacturing defects in semiconductor layers
Failure: Early life failures or parameter drift
Mitigation: Implement rigorous quality control, burn-in testing, statistical process control

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Frequency stability: ±10 ppm to ±100 ppm depending on grade; Phase noise: meets application-specific requirements

Test Method

Frequency response analysis, phase noise measurement, harmonic distortion testing, temperature cycling, accelerated life testing per MIL-STD-883

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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

Manufacturers of Active Device(s)

Manufacturer profiles associated with Active Device(s).

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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 active and passive devices in oscillators?

Active devices require external power to generate or amplify signals (like transistors or ICs), while passive devices (like capacitors or inductors) don't require power and only store or filter energy.

How do active devices in DCOs achieve digital frequency control?

DCO active devices use digital-to-analog converters, switched capacitor arrays, or direct digital synthesis techniques to convert digital input codes into precise frequency outputs with high resolution and stability.

What are common failure modes of active devices in oscillators?

Common failures include thermal runaway, electromigration in interconnects, oxide breakdown, latch-up conditions, and parameter drift due to aging or environmental stress.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Active Device(s)