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 Package Type Tuning Voltage Output Level Maximum Symmetry Mounting Type Minimum Operating Temperature Maximum Operating Temperature Pin Count Dimensions Height
RS庫存編號 163-0465
製造零件編號MC100EL1648DG
HK$69.395
毎管:98 個
單位
VCO 1.1 GHz - 6pF SOIC - ECL - - -40 °C +85 °C - 5 x 4 x 1.5mm 1.5mm
RS庫存編號 806-2567
製造零件編號MC100EL1648DG
HK$74.70
單位
VCO 1.1 GHz - 6pF SOIC - ECL - - -40 °C +85 °C - 5 x 4 x 1.5mm 1.5mm
RS庫存編號 442-870
製造零件編號SN74LS629N
HK$41.98
單位
VCO 1.1 → 25 MHz - 45pF PDIP - Squarewave - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS庫存編號 917-3438
製造零件編號LTC6908CS6-1#TRMPBF
HK$22.161
個 (在毎卷:500)
單位
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庫存編號 423-462
製造零件編號LTC6908CS6-1#TRMPBF
HK$34.34
單位
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庫存編號 923-2473
製造零件編號SN74LS629N
HK$39.384
毎管:25 個
單位
- - - - SOIC - - - - 0 °C +70 °C - 19.3 x 6.35 x 4.57mm 4.57mm
RS庫存編號 160-2661
製造零件編號HMC510LP5E
HK$277.499
個 (在毎卷:50)
單位
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庫存編號 720-8813
製造零件編號R0053-O-003-3
BrandTAITIEN
HK$250.00
單位
- 153.6 MHz ±50ppm - SMD - PECL - - -40 °C +85 °C - 7 x 5 x 1.8mm 1.8mm
RS庫存編號 720-8816
製造零件編號R0053-O-004-3
BrandTAITIEN
HK$250.00
單位
- 156.25 MHz ±50ppm - SMD - PECL - - -40 °C +85 °C - 7 x 5 x 1.8mm 1.8mm
RS庫存編號 709-9473
製造零件編號R0053-T-067-3
BrandTAITIEN
HK$19.40
單位
- 19.2 MHz ±2.5ppm 10pF SMD - Clipped Sinewave - - -30 °C +85 °C - 2.5 x 2 x 0.9mm 0.9mm
RS庫存編號 162-7068
製造零件編號SN74LS628NE4
HK$24.531
毎管:25 個
單位
- 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庫存編號 709-9271
製造零件編號TCETDLSANF-12.8MHz
BrandTAITIEN
HK$29.50
單位
- 12.8 MHz ±2.5ppm 10pF SMD - Clipped Sinewave - - -40 °C +85 °C - 7 x 5 x 2mm 2mm
RS庫存編號 160-2662
製造零件編號HMC511LP5E
HK$277.499
個 (在毎卷:50)
單位
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庫存編號 862-6155
製造零件編號HMC507LP5E
HK$307.58
單位
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庫存編號 709-9495
製造零件編號R0053-T-073-3
BrandTAITIEN
HK$19.40
單位
- 38.4 MHz ±2.5ppm 10pF SMD - Clipped Sinewave - - -30 °C +85 °C - 2.5 x 2 x 0.9mm 0.9mm
RS庫存編號 672-1387
製造零件編號FVXO-HC73BR-12.288
HK$45.05
單位
- 12.288 MHz ±50ppm 15pF - 0 → 3.3V HCMOS 45/55% Surface Mount -40 °C +85 °C 6 7 x 5 x 1.4mm 1.4mm
RS庫存編號 160-2702
製造零件編號HMC586LC4B
HK$1,816.897
個 (在毎卷:50)
單位
VCO 4 → 8 GHz - - SMT - - - - -40 °C +85 °C - 4 x 4 x 1.2mm 1.2mm
RS庫存編號 709-9476
製造零件編號R0053-T-068-3
BrandTAITIEN
HK$19.40
單位
- 20 MHz ±0.5ppm 10pF SMD - Clipped Sinewave - - -30 °C +85 °C - 2.5 x 2 x 0.9mm 0.9mm
RS庫存編號 709-9341
製造零件編號R0053-T-031-3
BrandTAITIEN
HK$285.00
單位
- 38.88 MHz ±0.5ppm 15pF SMD - CMOS - - -40 °C +85 °C - 7 x 5 x 2mm 2mm
RS庫存編號 720-8810
製造零件編號R0053-O-005-3
BrandTAITIEN
HK$250.00
單位
- 245.76 MHz ±50ppm - SMD 0.3 → 3V PECL 55% Surface Mount -40 °C +85 °C 6 7 x 5 x 1.8mm 1.8mm