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 oscillator’s 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. 796-0574
Mfr. Part No.QX8T50B7.372800B50TT
BrandQANTEK
TWD84.00
Each
units
XO 7.3728MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 146-3997
Mfr. Part No.LFSPXO018035 831018035
BrandIQD
TWD34.50
Each (In a Bag of 100)
units
Clock 50MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 173-2456
Mfr. Part No.Q33519E40004512
BrandEpson
TWD38.20
Each (On a Reel of 250)
units
XO 66MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.05mm 70°C
RS Stock No. 703-7113
Mfr. Part No.AS-12.000-18-SMD
BrandRALTRON
TWD14.30
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20°C - 4.6mm 70°C
RS Stock No. 173-2423
Mfr. Part No.Q33310F70018711
BrandEpson
TWD112.50
Each (On a Reel of 250)
units
XO 26MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 667-6549
Mfr. Part No.Q33519E40004512
BrandEpson
TWD54.00
Each
units
XO 66MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.05mm 70°C
RS Stock No. 173-4698
Mfr. Part No.OV-7604-C7-STD-020
TWD83.80
Each (On a Reel of 3000)
units
XO 32.768kHz HCMOS ±20ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 111-0751
Mfr. Part No.KC5032A22.5792CM0E00
BrandKYOCERA
TWD70.00
Each
units
Clock 22.5792MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1mm 70°C
RS Stock No. 796-0555
Mfr. Part No.QX14T50B50.00000B50TT
BrandQANTEK
TWD84.00
Each
units
XO 50MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 173-5881
Mfr. Part No.QX14T50B50.00000B50TT
BrandQANTEK
TWD61.00
Each (In a Tube of 25)
units
Clock 50MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 672-0621
Mfr. Part No.3H53ET-24.000
BrandMERCURY
TWD73.00
Each
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 707-9719
Mfr. Part No.COM2305-24.000-EXT
BrandRALTRON
TWD82.00
Each
units
XO 24MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 148-5366
Mfr. Part No.LFSPXO018038 831018038
BrandIQD
TWD61.80
Each (In a Pack of 10)
units
Clock 16MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 904-7799
Mfr. Part No.X1G004481000412
BrandEPSON
TWD134.00
Each
units
XO 27MHz CMOS - Surface Mount - - - - - - - 1.3mm -
RS Stock No. 478-5086
Mfr. Part No.Q3309CA40021900
BrandEpson
TWD136.00
Each
units
XO 100MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 173-2547
Mfr. Part No.Q3306JA21014701
BrandEPSON
TWD75.90
Each (On a Reel of 250)
units
XO 4MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 4.45mm 70°C
RS Stock No. 905-5832
Mfr. Part No.CCLD-033-50-100.000
BrandCrystek
TWD212.00
Each
units
Clock 161MHz Differential LVDS ±50ppm Surface Mount SMD - - - - 0°C - 1.8mm 70°C
RS Stock No. 173-2502
Mfr. Part No.Q3102JC01000111
BrandEpson
TWD42.40
Each (On a Reel of 250)
units
XO 32.768kHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 2.65mm 85°C
RS Stock No. 148-4384
Mfr. Part No.LFSPXO018041 831018041
BrandIQD
TWD49.00
Each (In a Pack of 10)
units
Clock 4MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 796-0637
Mfr. Part No.QX8T50B40.00000B50TT
BrandQANTEK
TWD76.00
Each
units
XO 40MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C