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. 815-0456
Mfr. Part No.QTX518A11.0592B15R
HK$24.59
Each
units
Clock 11.0592MHz HCMOS, TTL ±25ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 172-2553
Mfr. Part No.LFSPXO019082 831019082
BrandIQD
HK$19.163
Each (In a Bag of 100)
units
XO 24MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - 0°C - 1.5mm 70°C
RS Stock No. 796-0574
Mfr. Part No.QX8T50B7.372800B50TT
BrandQANTEK
HK$30.34
Each
units
XO 7.3728MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 173-2355
Mfr. Part No.X1G004171001512
BrandEPSON
HK$6.86
Each (On a Reel of 250)
units
XO 8MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +85°C, +105°C
RS Stock No. 707-9659
Mfr. Part No.CO4305-12.000-EXT
BrandRALTRON
HK$21.78
Each
units
Clock 12MHz CMOS, TTL ±50ppm Surface Mount SMD - - - - -40°C - 1.8mm 85°C
RS Stock No. 796-0533
Mfr. Part No.QX14T50B24.57600B50TT
BrandQANTEK
HK$27.79
Each
units
XO 24.576MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 703-2091
Mfr. Part No.ASV-11.0592MHz-EJ
BrandAbracon
HK$14.196
Each (In a Bag of 10)
units
XO 11.0592MHz HCMOS, TTL ±20ppm Surface Mount SMD - - - - -20°C - 1.8mm 70°C
RS Stock No. 478-5783
Mfr. Part No.Q3204DC21044200
BrandEpson
HK$16.14
Each
units
XO 24MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 478-5272
Mfr. Part No.Q3309CA40000601
BrandEpson
HK$41.98
Each
units
XO 40MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 173-2592
Mfr. Part No.Q3309CA40013701
BrandEpson
HK$24.707
Each (On a Reel of 250)
units
XO 2.048MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 178-1953
Mfr. Part No.CB3-3I-12M0000
BrandCTS
HK$8.815
Each (On a Reel of 1000)
units
Clock 12MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5V dc 5.5V dc - - -40°C - 1.8mm 85°C
RS Stock No. 671-9763
Mfr. Part No.S23305-10.000-X
BrandAKER
HK$21.70
Each
units
Clock 10MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 173-2593
Mfr. Part No.Q3309CA40000401
BrandEpson
HK$24.913
Each (On a Reel of 250)
units
XO 20MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 178-1954
Mfr. Part No.CB3-3I-1M8432
BrandCTS
HK$8.169
Each (On a Reel of 1000)
units
Clock 1.843MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5V dc 5.5V dc - - -40°C - 1.8mm 85°C
RS Stock No. 671-9766
Mfr. Part No.S33305-50.000-X
BrandAKER
HK$20.41
Each
units
Clock 50MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.1mm 85°C
RS Stock No. 178-1963
Mfr. Part No.CB3-3I-16M0000
BrandCTS
HK$8.169
Each (On a Reel of 1000)
units
Clock 16MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5V dc 5.5V dc - - -40°C - 1.8mm 85°C
RS Stock No. 111-0678
Mfr. Part No.KC7050A10.0000C30E00
BrandKYOCERA
HK$27.23
Each
units
Clock 10MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 172-1764
Mfr. Part No.KC7050K80.0000C1GE00
BrandKYOCERA
HK$30.814
Each (On a Reel of 1000)
units
Clock 80MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 173-2603
Mfr. Part No.Q3309CA40011201
BrandEpson
HK$21.372
Each (On a Reel of 250)
units
XO 80MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 173-2523
Mfr. Part No.Q3306JA41002401
BrandEPSON
HK$20.473
Each (On a Reel of 250)
units
XO 20MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 4.45mm 85°C