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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Description Price Oscillator Type Output Frequency Frequency Stability Load Capacitance Pin Count Package Type Output Level Minimum Operating Temperature Maximum Operating Temperature Dimensions Height Maximum Operating Supply Voltage Minimum Operating Supply Voltage Series
RS庫存編號 905-5857
製造零件編號CVCO55BE-0510-0770
BrandCrystek
TWD989.00
單位
VCO 770MHz - - - - - -40°C 85°C 12.7 x 12.7 x 3.81mm 3.81mm 9.45V dc 8.55V dc CVCO55
RS庫存編號 160-2662
製造零件編號HMC511LP5E
TWD1,341.40
個 (在毎卷:50)
單位
VCO 9.05 → 1.01GHz - - 32 QFN-32 - -40°C 85°C 5.1 x 5.1 x 1mm 1mm 13V dc 2V dc Hittite
RS庫存編號 672-1390
製造零件編號FVXO-HC73BR-27
TWD240.00
單位
VCO 27MHz ±50ppm 15pF - - HCMOS -40°C 85°C 7 x 5 x 1.4mm 1.4mm - - -
RS庫存編號 806-2567
製造零件編號MC100EL1648DG
Brandonsemi
TWD428.00
單位
VCO 1.1GHz - - 8 SOIC ECL -40°C 85°C 5 x 4 x 1.5mm 1.5mm - - -
RS庫存編號 189-8516
製造零件編號MAX2750EUA+
TWD268.00
/個 (每包:2個)
單位
VCO 2.40 → 2.50GHz - - 8 μMAX-8 - -40°C 85°C 3.1 x 3.1 x 0.95mm 0.95mm 5.5V dc 2.7V dc MAX260
RS庫存編號 709-4702
製造零件編號AD2S99APZ
TWD1,194.00
單位
- - - - - - - - - - - - - -
RS庫存編號 160-2661
製造零件編號HMC510LP5E
TWD1,222.30
個 (在毎卷:50)
單位
VCO 8.45 → 9.55GHz - - 32 QFN-32 - -40°C 85°C 5.1 x 5.1 x 1mm 1mm 13V dc 2V dc Hittite
RS庫存編號 131-1242
製造零件編號HMC1163LP5E
TWD1,458.00
單位
VCO 9.65 → 10.41GHz - - 32 LFCSP-32 - -40°C 85°C 5.1 x 5.1 x 0.95mm 0.95mm - - HMC1163
RS庫存編號 423-462
製造零件編號LTC6908CS6-1#TRMPBF
TWD175.00
單位
VCO 50 → 10MHz 300ppm/√kh - 6 TSOT-23 CMOS 0°C 85°C 2.9 x 1.5 x 0.9mm 0.9mm 5.5V dc 2.8V dc -
RS庫存編號 862-6164
製造零件編號HMC511LP5E
TWD1,458.00
單位
VCO 6.65 → 7.65GHz - - 32 QFN-32 - -40°C 85°C 5.1 x 5.1 x 1mm 1mm 13V dc 2V dc Hittite
RS庫存編號 672-1520
製造零件編號FVXO-HC53BR-8.192
TWD240.00
單位
VCO 8.192MHz ±50ppm 15pF - - HCMOS -40°C 85°C 5 x 3.2 x 1.4mm 1.4mm - - -
RS庫存編號 190-5970
製造零件編號MAX2608EUT+T
TWD78.20
/個 (每包:5個)
單位
VCO 300 → 500MHz - - 6 SOT-23 - -40°C 85°C 3 x 1.75 x 1.3mm 1.3mm 5.5V dc 2.7V dc MAX260
RS庫存編號 145-1166
製造零件編號SN74LS624N
TWD122.80
毎管:25 個
單位
VCO 1.1 → 25MHz - - 14 PDIP-14 Squarewave 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm 4.75V dc 5.25V dc -
RS庫存編號 442-864
製造零件編號SN74LS624N
TWD147.00
單位
VCO 1.1 → 25MHz - - 14 PDIP-14 Squarewave 0°C 70°C 19.3 x 6.35 x 4.57mm 4.57mm 5.25V dc 4.75V dc -
RS庫存編號 709-4706
製造零件編號AD2S99BPZ
TWD1,436.00
單位
- - - - - - - - - - - - - -
RS庫存編號 160-2659
製造零件編號HMC509LP5E
TWD1,341.40
個 (在毎卷:50)
單位
VCO 7.80 → 8.80GHz - - 32 QFN-32 - -40°C 85°C 5.1 x 5.1 x 1mm 1mm 13V dc 2V dc Hittite
RS庫存編號 917-3438
製造零件編號LTC6908CS6-1#TRMPBF
TWD141.60
個 (在毎卷:500)
單位
VCO 50 → 10MHz 300ppm/√kh - 6 TSOT-23 CMOS 0°C 85°C 2.9 x 1.5 x 0.9mm 0.9mm 5.5V dc 2.7V dc -
RS庫存編號 189-7193
製造零件編號MAX2750EUA+
TWD246.60
毎管:50 個
單位
VCO 2.40 → 2.50GHz - - 8 μMAX-8 - -40°C 85°C 3.1 x 3.1 x 0.95mm 0.95mm 5.5V dc 2.7V dc MAX260
RS庫存編號 672-1558
製造零件編號FVXO-HC53BR-44.736
TWD240.00
單位
VCO 44.736MHz ±50ppm 15pF - - HCMOS -40°C 85°C 5 x 3.2 x 1.4mm 1.4mm - - -
RS庫存編號 163-0465
製造零件編號MC100EL1648DG
Brandonsemi
TWD393.80
毎管:98 個
單位
VCO 1.1GHz - - 8 SOIC-8 ECL -40°C 85°C 5 x 4 x 1.5mm 1.5mm - - MC100EL