VCO Oscillators

VCO (Voltage Controlled Oscillators) can also be known as silicon oscillators or VCOs. They are electronic devices designed to control oscillation frequency by varying the DC voltage input. Oscillation frequencies can be adjusted from a few Hz to hundreds of GHz. The VCO's can also work as modulators of both frequency and phase by delivering a modulating signal to the control input. Voltage Controlled Oscillators are also commonly used as an integral part of the phase-locked loop.


What are the types of VCO Oscillators?


Voltage Controlled Oscillators can be categorized into 2 types according to the type of waveform generated:


Linear / Harmonic Oscillator - this type of oscillator generates a sinusoidal type of waveform.


Relaxation Oscillator - This type of VCO is able to generate a triangular waveform or a sawtooth waveform.


What are the voltage controlled oscillators used for?


There are several typical applications of VCOs and they are:


  • Function Generators

  • Phase-Locked Loops

  • Tone Generators

  • Clock Generators

  • Electronic Jamming Equipment

  • Frequency Synthesizers

How to choose the right VCO?


  • Some key parameters that need to be considered before selecting the VCO are:

  • The Frequency Range - the minimum and maximum tunable oscillation frequency (MHz)

  • Output Power - The output power produced by the VCO (dbm)

  • Tuning Voltage - the voltage level applied to the device to tune and set the desired oscillation frequency (V)

  • Tunning Sensitivity - the level of variation of the oscillation frequency with different voltages applied to the VCO (MHz/V)

  • Supply Voltage - a DC Voltage required to correct operation (V)

  • Pulling - drift in the output frequency due to load variation (MHz/V)

  • Pushing - drift in the output frequency due to variation in the supply voltage (MHz/V)

  • Phase Noise - a clarity of the output signal from the VCO (dBc/Hz)

...
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Beskrivning Pris Oscillator Type Output Frequency Frequency Stability Load Capacitance Package Type Output Level Minimum Operating Temperature Maximum Operating Temperature Dimensions Height Maximum Operating Supply Voltage Minimum Operating Supply Voltage Series
RS-artikelnummer 423-462
Tillv. art.nrLTC6908CS6-1#TRMPBF
VarumärkeAnalog Devices
35,26 kr
Each
Enheter
VCO 50 → 10MHz 300ppm/√kh 5pF TSOT-23 CMOS -40°C 85°C 2.9 x 1.5 x 0.9mm 0.9mm - - -
RS-artikelnummer 917-3438
Tillv. art.nrLTC6908CS6-1#TRMPBF
VarumärkeAnalog Devices
23,88 kr
Each (On a Reel of 500)
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VCO 50 → 10MHz 300ppm/√kh 5pF TSOT-23 CMOS -40°C 85°C 2.9 x 1.5 x 0.9mm 0.9mm - - -
RS-artikelnummer 862-6161
Tillv. art.nrHMC510LP5E
VarumärkeAnalog Devices
257,60 kr
Each
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VCO - - - QFN - -40°C 85°C 5.1 x 5.1 x 1mm 1mm - - Hittite
RS-artikelnummer 862-6155
Tillv. art.nrHMC507LP5E
VarumärkeAnalog Devices
320,44 kr
Each
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VCO - - - QFN - -40°C 85°C 5.1 x 5.1 x 1mm 1mm - - Hittite
RS-artikelnummer 923-2473
Tillv. art.nrSN74LS629N
VarumärkeTexas Instruments
45,062 kr
Each (In a Tube of 25)
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- - - - SOIC - 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm - - -
RS-artikelnummer 160-2661
Tillv. art.nrHMC510LP5E
VarumärkeAnalog Devices
253,252 kr
Each (On a Reel of 50)
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VCO - - - QFN - -40°C 85°C 5.1 x 5.1 x 1mm 1mm - - Hittite
RS-artikelnummer 806-2567
Tillv. art.nrMC100EL1648DG
VarumärkeON Semiconductor
88,87 kr
Each
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VCO 1.1GHz - 6pF SOIC ECL -40°C 85°C 5 x 4 x 1.5mm 1.5mm - - -
RS-artikelnummer 163-0465
Tillv. art.nrMC100EL1648DG
VarumärkeON Semiconductor
83,527 kr
Each (In a Tube of 98)
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VCO 1.1GHz - 6pF SOIC ECL -40°C 85°C 5 x 4 x 1.5mm 1.5mm - - -
RS-artikelnummer 862-6152
Tillv. art.nrHMC509LP5E
VarumärkeAnalog Devices
322,40 kr
Each
Enheter
VCO - - - QFN - -40°C 85°C 5.1 x 5.1 x 1mm 1mm - - Hittite
RS-artikelnummer 160-9957
Tillv. art.nrHMC385LP4E
VarumärkeAnalog Devices
112,803 kr
Each (On a Reel of 50)
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- 2.25 → 2.5GHz - - QFN - -40°C 85°C 4.1 x 4.1 x 1mm 1mm - - Hittite
RS-artikelnummer 160-2702
Tillv. art.nrHMC586LC4B
VarumärkeAnalog Devices
1 802,134 kr
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VCO 4 → 8GHz - - SMT - -40°C 85°C 4 x 4 x 1.2mm 1.2mm - - Hittite
RS-artikelnummer 145-1166
Tillv. art.nrSN74LS624N
VarumärkeTexas Instruments
30,888 kr
Each (In a Tube of 25)
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VCO 1.1 → 25MHz - 45pF PDIP Squarewave 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm - - -
RS-artikelnummer 672-1520
Tillv. art.nrFVXO-HC53BR-8.192
VarumärkeFox Electronics
39,18 kr
Each
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VCO 8.192MHz ±50ppm 15pF - HCMOS -40°C 85°C 5 x 3.2 x 1.4mm 1.4mm - - -
RS-artikelnummer 190-5970
Tillv. art.nrMAX2608EUT+T
VarumärkeMaxim Integrated
20,514 kr
Each (In a Pack of 5)
Enheter
VCO 300 → 500MHz - 0.5 SOT-23 - -40°C 85°C 3 x 1.75 x 1.3mm 1.3mm - - -
RS-artikelnummer 862-6089
Tillv. art.nrHMC385LP4E
VarumärkeAnalog Devices
117,57 kr
Each
Enheter
VCO 2.25 → 2.5GHz - - QFN - -40°C 85°C 4.1 x 4.1 x 1mm 1mm - - Hittite
RS-artikelnummer 662-4573
Tillv. art.nrSN74LS628N
VarumärkeTexas Instruments
33,626 kr
Each (In a Pack of 5)
Enheter
VCO 1.1 → 25MHz - 45pF PDIP Squarewave 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm - - -
RS-artikelnummer 162-7068
Tillv. art.nrSN74LS628N
VarumärkeTexas Instruments
26,363 kr
Each (In a Tube of 25)
Enheter
- 1.1 → 25MHz - 45pF SOIC Squarewave 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm - - -
RS-artikelnummer 905-5857
Tillv. art.nrCVCO55BE-0510-0770
VarumärkeCrystek
229,75 kr
Each
Enheter
VCO 770MHz - - SMD VCO -40°C 85°C 12.7 x 12.7 x 3.81mm 3.81mm 9.45V dc 8.55V dc -
RS-artikelnummer 862-6164
Tillv. art.nrHMC511LP5E
VarumärkeAnalog Devices
322,40 kr
Each
Enheter
VCO - - - QFN - -40°C 85°C 5.1 x 5.1 x 1mm 1mm - - Hittite
RS-artikelnummer 190-4913
Tillv. art.nrMAX2608EUT+T
VarumärkeMaxim Integrated
10,375 kr
Each (On a Reel of 2500)
Enheter
VCO 300 → 500MHz - 0.5 SOT-23 - -40°C 85°C 3 x 1.75 x 1.3mm 1.3mm - - -
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