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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Omschrijving Prijs 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-stocknr. 905-5857
FabrikantnummerCVCO55BE-0510-0770
FabrikantCrystek
€ 22,22
Each
Aantal stuks
VCO 770 MHz - - SMD VCO -40 °C +85 °C 12.7 x 12.7 x 3.81mm 3.81mm 9.45 V dc 8.55 V dc -
RS-stocknr. 862-6186
FabrikantnummerHMC584LP5E
FabrikantAnalog Devices
€ 31,05
Each
Aantal stuks
VCO 6.25 → 6.95 (Output 2) GHz, 12.5 → 13.9 (Output 1) GHz - - QFN - -40 °C +85 °C 5.1 x 5.1 x 1mm 1mm 5.25 V 4.75 V Hittite
RS-stocknr. 862-6152
FabrikantnummerHMC509LP5E
FabrikantAnalog Devices
€ 33,43
Each
Aantal stuks
VCO 3.9 → 4.4 (Output 2) GHz, 7.8 → 8.8 (Output 1) GHz - - QFN - -40 °C +85 °C 5.1 x 5.1 x 1mm 1mm 5.25 V 4.75 V Hittite
RS-stocknr. 862-6155
FabrikantnummerHMC507LP5E
FabrikantAnalog Devices
€ 33,92
Each
Aantal stuks
VCO 3.325 → 3.825 (Output 2) GHz, 6.65 → 7.65 (Output 1) GHz - - QFN - -40 °C +85 °C 5.1 x 5.1 x 1mm 1mm 5.25 V 4.75 V Hittite
RS-stocknr. 160-2704
FabrikantnummerHMC732LC4B
FabrikantAnalog Devices
€ 106,256
Each (On a Reel of 50)
Aantal stuks
VCO 6 → 12 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS-stocknr. 145-1166
FabrikantnummerSN74LS624N
€ 3,028
Each (In a Tube of 25)
Aantal stuks
VCO 1.1 → 25 MHz - 45pF PDIP Squarewave 0 °C +70 °C 19.3 x 6.35 x 4.57mm 4.57mm 5.25 V 4.75 V -
RS-stocknr. 160-2702
FabrikantnummerHMC586LC4B
FabrikantAnalog Devices
€ 158,956
Each (On a Reel of 50)
Aantal stuks
VCO 4 → 8 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS-stocknr. 862-6161
FabrikantnummerHMC510LP5E
FabrikantAnalog Devices
€ 33,43
Each
Aantal stuks
VCO 4.225 → 4.775 (Output 2) GHz, 8.45 → 9.55 (Output 1) GHz - - QFN - -40 °C +85 °C 5.1 x 5.1 x 1mm 1mm 5.25 V 4.75 V Hittite
RS-stocknr. 672-1390
FabrikantnummerFVXO-HC73BR-27
FabrikantFox Electronics
€ 5,33
Each
Aantal stuks
VCO 27 MHz ±50ppm 15pF - HCMOS -40 °C +85 °C 7 x 5 x 1.4mm 1.4mm 3.465 V 3.135 V -
RS-stocknr. 672-1520
FabrikantnummerFVXO-HC53BR-8.192
FabrikantFox Electronics
€ 3,95
Each
Aantal stuks
VCO 8.192 MHz ±50ppm 15pF - HCMOS -40 °C +85 °C 5 x 3.2 x 1.4mm 1.4mm 3.465 V 3.135 V -
RS-stocknr. 165-9525
FabrikantnummerMAX2750EUA+
FabrikantMaxim Integrated
€ 5,087
Each (In a Tube of 50)
Aantal stuks
VCO 2400 2500 MHz - 220pF μMAX - -40 °C +85 °C 3.1 x 3.1 x 0.95mm 0.95mm 5.5 V 2.7 V -
RS-stocknr. 163-0465
FabrikantnummerMC100EL1648DG
FabrikantON Semiconductor
€ 7,488
Each (In a Tube of 98)
Aantal stuks
VCO 1.1 GHz - 6pF SOIC ECL -40 °C +85 °C 5 x 4 x 1.5mm 1.5mm 5.5 V 4.2 V -
RS-stocknr. 917-3438
FabrikantnummerLTC6908CS6-1#TRMPBF
FabrikantAnalog Devices
€ 2,17
Each (On a Reel of 500)
Aantal stuks
VCO 50 kHz → 10 MHz 300ppm/√kh 5pF TSOT-23 CMOS -40 °C +85 °C 2.9 x 1.5 x 0.9mm 0.9mm 5.5 V 2.25 V -
Nieuw
RS-stocknr. 190-4913
FabrikantnummerMAX2608EUT+T
FabrikantMaxim Integrated
€ 1,053
Each (On a Reel of 2500)
Aantal stuks
VCO 300 500 MHz - 0.5pF SOT-23 - -40 °C +85 °C 3 x 1.75 x 1.3mm 1.3mm - 2.7 V -
RS-stocknr. 162-7068
FabrikantnummerSN74LS628NE4
€ 2,593
Each (In a Tube of 25)
Aantal stuks
- 1.1 → 25 MHz - 45pF SOIC Squarewave 0 °C +70 °C 19.3 x 6.35 x 4.57mm 4.57mm 5.25 V 4.75 V -
RS-stocknr. 923-2473
FabrikantnummerSN74LS629N
€ 2,572
Each (In a Tube of 25)
Aantal stuks
- - - - SOIC - 0 °C +70 °C 19.3 x 6.35 x 4.57mm 4.57mm 5.25 V 4.75 V -
RS-stocknr. 862-6433
FabrikantnummerHMC732LC4B
FabrikantAnalog Devices
€ 127,98
Each
Aantal stuks
VCO 6 → 12 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS-stocknr. 862-6417
FabrikantnummerHMC586LC4B
FabrikantAnalog Devices
€ 191,46
Each
Aantal stuks
VCO 4 → 8 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS-stocknr. 131-1242
FabrikantnummerHMC1163LP5E
FabrikantAnalog Devices
€ 31,42
Each
Aantal stuks
VCO 9.65 → 10.41 GHz - - LFCSP - -40 °C +85 °C 5.1 x 5.1 x 0.95mm 0.95mm 5.5 V - HMC1163
RS-stocknr. 862-6089
FabrikantnummerHMC385LP4E
FabrikantAnalog Devices
€ 8,28
Each
Aantal stuks
VCO 2.25 → 2.5 GHz - - QFN - -40 °C +85 °C 4.1 x 4.1 x 1mm 1mm 3.25 V 2.75 V Hittite
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