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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รายละเอียดสินค้า / Description ราคา / Price 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 Stock No. 923-2473
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS629N
THB158.41
Each (In a Tube of 25)
Units
- - - - SOIC - 0 °C +70 °C 19.3 x 6.35 x 4.57mm 4.57mm 5.25 V 4.75 V -
RS Stock No. 442-870
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS629N
THB176.49
Each
Units
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 Stock No. 162-7068
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS628N
THB111.80
Each (In a Tube of 25)
Units
- 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 Stock No. 862-6089
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC385LP4E
THB436.86
Each
Units
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
RS Stock No. 917-3438
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC6908CS6-1#TRMPBF
THB101.404
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 5.5 V 2.25 V -
RS Stock No. 160-9957
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC385LP4E
THB378.71
Each (On a Reel of 50)
Units
- 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
RS Stock No. 662-4573
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS628N
THB128.366
Each: (In a Pack of 5)
Units
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 Stock No. 163-0465
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC100EL1648DG
THB290.33
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 5.5 V 4.2 V -
RS Stock No. 423-462
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC6908CS6-1#TRMPBF
THB140.54
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 5.5 V 2.25 V -
RS Stock No. 160-2702
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC586LC4B
THB8,279.16
Each (On a Reel of 50)
Units
VCO 4 → 8 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS Stock No. 862-6417
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC586LC4B
THB6,746.96
Each
Units
VCO 4 → 8 GHz - - SMT - -40 °C +85 °C 4 x 4 x 1.2mm 1.2mm 5.5 V - Hittite
RS Stock No. 806-2567
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC100EL1648DG
THB330.97
Each
Units
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 Stock No. 862-6152
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC509LP5E
THB1,191.27
Each
Units
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 Stock No. 799-2811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX2750EUA+
THB212.03
Each
Units
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 Stock No. 131-1242
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC1163LP5E
THB1,160.34
Each
Units
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 Stock No. 160-2659
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC509LP5E
THB998.52
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 5.25 V 4.75 V Hittite
RS Stock No. 160-2670
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC584LP5E
THB998.52
Each (On a Reel of 50)
Units
VCO 12.5 → 13.9 (Output 1) GHz, 6.25 → 6.95 (Output 2) GHz - - QFN - -40 °C +85 °C 5.1 x 5.1 x 1mm 1mm 5.25 V 4.75 V Hittite
ใหม่ / New
RS Stock No. 190-5970
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX2608EUT+T
THB107.00
Each: (In a Pack of 5)
Units
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 Stock No. 905-5857
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CVCO55BE-0510-0770
Brand :Crystek
THB809.02
Each
Units
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 Stock No. 862-6164
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HMC511LP5E
THB1,191.27
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 5.25 V 4.75 V Hittite
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