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)

...
Read more Read less

Filters

Viewing 1 - 20 of 33 products
Results per page
Description Price Oscillator Type Output Frequency Frequency Stability Load Capacitance Package Type Tuning Voltage Output Level Maximum Symmetry Mounting Type Minimum Operating Temperature Maximum Operating Temperature Pin Count Dimensions Height
RS Stock No. 163-0465
Mfr. Part No.MC100EL1648DG
HK$69.395
Each (In a Tube of 98)
units
VCO 1.1 GHz - 6pF SOIC - ECL - - -40 °C +85 °C - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 806-2567
Mfr. Part No.MC100EL1648DG
HK$74.70
Each
units
VCO 1.1 GHz - 6pF SOIC - ECL - - -40 °C +85 °C - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 442-870
Mfr. Part No.SN74LS629N
HK$41.98
Each
units
VCO 1.1 → 25 MHz - 45pF PDIP - Squarewave - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 923-2473
Mfr. Part No.SN74LS629N
HK$39.384
Each (In a Tube of 25)
units
- - - - SOIC - - - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 423-462
Mfr. Part No.LTC6908CS6-1#TRMPBF
HK$34.34
Each
units
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
RS Stock No. 917-3438
Mfr. Part No.LTC6908CS6-1#TRMPBF
HK$22.161
Each (On a Reel of 500)
units
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
New
RS Stock No. 189-7193
Mfr. Part No.MAX2750EUA+
BrandMaxim
HK$42.701
Each (In a Tube of 50)
units
VCO 2400 → 2500 MHz - 220pF μMAX - - - - -40 °C +85 °C - 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 160-2659
Mfr. Part No.HMC509LP5E
HK$268.69
Each (On a Reel of 50)
units
- 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
RS Stock No. 442-864
Mfr. Part No.SN74LS624N
HK$29.93
Each
units
VCO 1.1 → 25 MHz - 45pF PDIP - Squarewave - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 862-6164
Mfr. Part No.HMC511LP5E
HK$284.80
Each
units
VCO 4.525 → 5.075 (Output 2) GHz, 9.05 → 10.15 (Output 1) GHz - - QFN - - - - -40 °C +85 °C - 5.1 x 5.1 x 1mm 1mm
RS Stock No. 160-2661
Mfr. Part No.HMC510LP5E
HK$277.499
Each (On a Reel of 50)
units
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
RS Stock No. 672-1520
Mfr. Part No.FVXO-HC53BR-8.192
HK$53.00
Each
units
VCO 8.192 MHz ±50ppm 15pF - - HCMOS - - -40 °C +85 °C - 5 x 3.2 x 1.4mm 1.4mm
RS Stock No. 162-7068
Mfr. Part No.SN74LS628NE4
HK$24.531
Each (In a Tube of 25)
units
- 1.1 → 25 MHz - 45pF SOIC 0 → 5V Squarewave 50% Surface Mount 0 °C +70 °C 14 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 131-1242
Mfr. Part No.HMC1163LP5E
HK$324.05
Each
units
VCO 9.65 → 10.41 GHz - - LFCSP - - - - -40 °C +85 °C - 5.1 x 5.1 x 0.95mm 0.95mm
RS Stock No. 145-1166
Mfr. Part No.SN74LS624N
HK$23.196
Each (In a Tube of 25)
units
VCO 1.1 → 25 MHz - 45pF PDIP - Squarewave - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 862-6089
Mfr. Part No.HMC385LP4E
HK$106.62
Each
units
VCO 2.25 → 2.5 GHz - - QFN - - - - -40 °C +85 °C - 4.1 x 4.1 x 1mm 1mm
RS Stock No. 672-1558
Mfr. Part No.FVXO-HC53BR-44.736
HK$31.21
Each
units
VCO 44.736 MHz ±50ppm 15pF - - HCMOS - - -40 °C +85 °C - 5 x 3.2 x 1.4mm 1.4mm
RS Stock No. 862-6433
Mfr. Part No.HMC732LC4B
HK$1,129.68
Each
units
VCO 6 → 12 GHz - - SMT - - - - -40 °C +85 °C - 4 x 4 x 1.2mm 1.2mm
RS Stock No. 862-6155
Mfr. Part No.HMC507LP5E
HK$307.58
Each
units
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
RS Stock No. 672-1390
Mfr. Part No.FVXO-HC73BR-27
HK$47.70
Each
units
VCO 27 MHz ±50ppm 15pF - - HCMOS - - -40 °C +85 °C - 7 x 5 x 1.4mm 1.4mm
Related Products
Permanent pull loops for AMP-LATCH IDC ribbon cable ...
Description:
Permanent pull loops for AMP-LATCH IDC ribbon cable receptacle and pin connectors. These pull loops are made from natural colour PVC, 94-VTM-1 rating. For details of connectors that these pull loops can be used with please see additional data table. ...
These connectors provide fast reliable mass termination to ...
Description:
These connectors provide fast reliable mass termination to Speedbloc® ribbon cable without the need to separate individual wires before assembly. No cable stripping, soldering or expensive tooling is requiredFully compatible with conventional D connectors and accepts all standard locking systemsLow ...
From ERNI, this TMC series of sub-miniature d-built ...
Description:
From ERNI, this TMC series of sub-miniature d-built connectors are designed for use with ribbon cables. With 9, 15, 25, 37 pin connectors available, the series also offers appropriate strain relief and connector screws for reliable interfacing. The trapezoidal design ...
From 3M, this range of 101 Series Mini ...
Description:
From 3M, this range of 101 Series Mini D Ribbon (MDR) Connectors are .050" IDC Wiremount Shielded Plugs. The design of the 101 Series Mini D Ribbon (MDR) Connectors, provides IDC terminations for the individual cores and wiper-on-wiper contact. The ...