Crystal Oscillators

A crystal oscillator is a electromechanical device, it's also an electronic oscillator circuit. The main purpose of an oscillator is to make use of a quartz crystal as a frequency. Crystal oscillators use the mechanical resonance of a vibrating crystal, of which is made up from a piezoelectric material. This process allows the oscillator to create and obtain an electric signal with a high precision frequency.

Where Crystal Oscillators are used

This type of frequency is mostly used to keep track of time within a wrist watch or a digital integrated circuit, to provide a stable clock signal. This is where this signal gained it's commonly referred to name "clock signal". This clock signal is used to synchronise the operation of the other electronic devices that make up the system the oscillator is housed in. An oscillator is also used to help stabilise frequencies for radio transmitters and receivers, used in clocks (clock oscillator), computers and cell phones. Quartz crystal can also be found inside test and measurement equipment such as counters, signal generators and oscilloscopes.

A little more information on Crystal Oscillators

  • Crystal oscillators are known to be superior to ceramic resonators, this is for a multitude of reasons. They offer higher stability, they're higher quality and are considerably lower in cost and more compact in size.
  • Quartz crystals are manufactured for frequencies that range from a few tens of kilohertz all the way up to hundreds of megahertz.

Types of Crystal Oscillators

  • TCXO - These are used when a temperature stability is needed and can't be attained through a standard crystal oscillator (XO) or a voltage controlled crystal oscillator (VCXO).
  • OCXO - This is an oven controlled crystal oscillator, a type of oscillator that achieves the highest frequency stability that a quartz crystal can. They are designed to operate inside a temperature controlled oven, they are physically larger and require more power to run.
  • VCXO - This is a voltage controlled crystal oscillator, it controls the change in crystal output by using a DC (direct current) voltage.

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Description Price Oscillator Type Output Frequency Output Level Frequency Stability Mounting Type Package Type Minimum Operating Supply Voltage Maximum Operating Supply Voltage Pin Count Length Minimum Operating Temperature Width Height Maximum Operating Temperature
RS Stock No. 173-5869
Mfr. Part No.QX14T50B2.457600B50TT
BrandQANTEK
kr 14,816
Each (In a Tube of 25)
Units
Clock 2.4576 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 144-1116
BrandRS PRO
kr 23,13
Each (In a Pack of 5)
Units
Clock 33.33 MHz CMOS ±50ppm Surface Mount SMD - 3.3 V dc - - -10 °C - 1.8mm +70 °C
RS Stock No. 148-5379
Mfr. Part No.LFSPXO021270 831021270
BrandIQD
kr 13,479
Each (In a Pack of 10)
Units
Clock 24 MHz HCMOS ±50ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 173-2519
Mfr. Part No.Q3204DC21004300
BrandEpson
kr 15,553
Each (In a Tube of 35)
Units
XO 66 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 172-1972
Mfr. Part No.KC7050K66.6667C1GE00
BrandKYOCERA
kr 40,68
Each
Units
Clock 66.66 MHz CMOS - Surface Mount SMD 1.6 V 3.63 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 171-2787
Mfr. Part No.ASE-50.000MHZ-LC-T
BrandAbracon
kr 12,602
Each (In a Pack of 5)
Units
XO 50 MHz CMOS ±50ppm Surface Mount SMD 3.135 V 3.465 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 144-5016
BrandRS PRO
kr 8,796
Each (In a Pack of 5)
Units
Clock 24 MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3 V dc - - -40 °C - 1mm +85 °C
RS Stock No. 173-5883
Mfr. Part No.QX8T50B16.38400B50TT
BrandQANTEK
kr 14,796
Each (In a Tube of 40)
Units
Clock 16.384 MHz HCMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 148-5338
Mfr. Part No.LFSPXO025494 831025494
BrandIQD
kr 8,953
Each (In a Pack of 10)
Units
Clock 16 MHz CMOS ±50ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 813-6242
Mfr. Part No.QX533A12.00000B15R
BrandQANTEK
kr 17,75
Each
Units
Clock 12 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.3mm +85 °C
RS Stock No. 173-2431
Mfr. Part No.Q33519E40002412
BrandEpson
kr 9,43
Each (On a Reel of 250)
Units
XO 12 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 171-2868
Mfr. Part No.ASFLK-32.768KHZ-LJT
BrandAbracon
kr 19,242
Each (In a Pack of 5)
Units
XO 32.768 kHz CMOS, TTL ±20ppm Surface Mount SMD 2.5 V 3.3 V - - -40 °C - 1.3mm +85 °C
RS Stock No. 172-1856
Mfr. Part No.KC2016K10.0000C1GE00
BrandKYOCERA
kr 35,79
Each
Units
Clock 10 MHz CMOS - Surface Mount SMD 1.6 V 3.63 V - - -40 °C - 0.8mm +85 °C
RS Stock No. 180-7711
Mfr. Part No.ASAKMPD5-32.768KHZ-T3
BrandAbracon
kr 35,902
Each (On a Reel of 100)
Units
XO 32.76 kHz CMOS ±15ppm Surface Mount SMD 1.6 V 3.63 V - - -40 °C - 0.6mm +85 °C
RS Stock No. 815-0591
Mfr. Part No.QTX333A27.0000B15TR
kr 9,11
Each
Units
Clock 27 MHz HCMOS, TTL ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 171-0297
Mfr. Part No.AX7DAF3-100.0000C
BrandAbracon
kr 66,00
Each
Units
XO 100 MHz LVDS ±25ppm Surface Mount 6-SMD Compatible - 3.3 V - - -40 °C - 1.9mm +85 °C
RS Stock No. 478-5216
Mfr. Part No.Q3309CA40006501
BrandEpson
kr 27,82
Each
Units
XO 24.576 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 144-6350
Mfr. Part No.545AAA250M000BAG
kr 67,40
Each (In a Tray of 50)
Units
Clock 250 MHz LVPECL ±20ppm Surface Mount SMD 1.71 V 3.46 V - - -40 °C - 1.28mm +85 °C
RS Stock No. 667-6495
Mfr. Part No.Q33519E40002612
BrandEpson
kr 12,26
Each
Units
XO 25 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 172-1667
Mfr. Part No.KC3225K24.0000C1GE00
BrandKYOCERA
kr 32,506
Each (On a Reel of 2000)
Units
Clock 24 MHz CMOS - Surface Mount SMD 1.6 V 3.63 V - - -40 °C - 0.8mm +85 °C
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