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. 186-3345
Mfr. Part No.MXO-49A-I 10.0000MHz
BrandMITADENPA
MYR167.10
Each
units
- 10MHz CMOS, TTL ±25ppm Through Hole - - 5V dc - - -10°C - 6.5mm 70°C
RS Stock No. 172-1733
Mfr. Part No.KC7050K4.00000C1GE00
BrandKYOCERA
MYR16.859
Each (On a Reel of 1000)
units
Clock 4MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 693-9169
Mfr. Part No.XO91050UITA-16.000
BrandEuroquartz
MYR8.80
Each
units
XO 16MHz HCMOS, LSTTL ±50ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 171-2696
Mfr. Part No.ASE-25.000MHZ-LC-T
BrandAbracon
MYR6.65
Each (In a Pack of 5)
units
XO 25MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 478-5727
Mfr. Part No.Q3204DC21000300
BrandEpson
MYR18.34
Each
units
XO 16MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 478-5907
Mfr. Part No.Q3204DC21031500
BrandEpson
MYR18.54
Each
units
XO 4MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 146-3936
Mfr. Part No.LFSPXO018042 831018042
BrandIQD
MYR5.92
Each (On a Reel of 1000)
units
Clock 40MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 173-2863
Mfr. Part No.LFSPXO026068 831024589
BrandIQD
MYR4.683
Each (In a Bag of 100)
units
XO 40MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 144-1108
BrandRS PRO
MYR14.234
Each (In a Pack of 5)
units
Clock 32MHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 671-9729
Mfr. Part No.S33305-14.31818-X
BrandAKER
MYR10.94
Each
units
Clock 14.3182MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.1mm 85°C
RS Stock No. 171-2787
Mfr. Part No.ASE-50.000MHZ-LC-T
BrandAbracon
MYR6.702
Each (In a Pack of 5)
units
XO 50MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 173-4704
Mfr. Part No.S21805-24.000-X
BrandAKER
MYR23.594
Each (On a Reel of 250)
units
XO 24MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 671-9662
Mfr. Part No.S73305-100.000-X-15
BrandAKER
MYR18.68
Each
units
Clock 100MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 186-3349
Mfr. Part No.MXO-49A-I 20.0000MHz
BrandMITADENPA
MYR167.10
Each
units
- 20MHz CMOS, TTL ±25ppm Through Hole - - 5V dc - - -10°C - 6.5mm 70°C
RS Stock No. 172-2006
Mfr. Part No.KC7050K14.7456C1GE00
BrandKYOCERA
MYR20.94
Each
units
Clock 14.74MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 813-6343
Mfr. Part No.QX233A32.00000B15R
BrandQANTEK
MYR12.07
Each
units
Clock 32MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 144-5018
BrandRS PRO
MYR11.272
Each (In a Pack of 5)
units
Clock 50MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 478-5250
Mfr. Part No.Q3309CA40029801
BrandEpson
MYR16.28
Each
units
XO 3.6864MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 173-2605
Mfr. Part No.Q3309CA40010812
BrandEpson
MYR10.98
Each (On a Reel of 250)
units
XO 25MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 672-0592
Mfr. Part No.3SWOET-48.000
BrandMERCURY
MYR9.94
Each
units
XO 48MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C