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. 667-6353
Mfr. Part No.Q33310F70015611
BrandEpson
PHP214.78
Each
units
XO 8MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 478-5963
Mfr. Part No.Q3204DC21000200
BrandEpson
PHP202.96
Each
units
XO 8MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
PHP25.27
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - 2 12mm -20°C 4.8mm 4.6mm 70°C
RS Stock No. 173-2574
Mfr. Part No.Q3204DC21000200
BrandEpson
PHP181.314
Each (In a Tube of 35)
units
XO 8MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 111-0711
Mfr. Part No.KC7050A20.0000C50D00
BrandKYOCERA
PHP121.40
Each
units
Clock 20MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 904-7667
Mfr. Part No.X1G004171003512
BrandEPSON
PHP123.73
Each
units
XO 27MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +105°C, +85°C
RS Stock No. 173-5839
Mfr. Part No.QX733A50.00000B15R
BrandQANTEK
PHP100.083
Each (On a Reel of 1000)
units
Clock 50MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 904-7654
Mfr. Part No.X1G004171003012
BrandEPSON
PHP123.73
Each
units
XO 22.5792MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +105°C, +85°C
RS Stock No. 478-6203
Mfr. Part No.Q3306JA21012001
BrandEpson
PHP224.12
Each
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 4.45mm 70°C
RS Stock No. 173-2428
Mfr. Part No.Q33310F70015611
BrandEpson
PHP76.088
Each (On a Reel of 250)
units
XO 8MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 671-9839
Mfr. Part No.S75005-20.000-X-15
BrandAKER
PHP128.36
Each
units
Clock 20MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 173-2363
Mfr. Part No.X1G004171003012
BrandEPSON
PHP45.337
Each (On a Reel of 250)
units
XO 22.5792MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +105°C, +85°C
RS Stock No. 173-2366
Mfr. Part No.X1G004171003512
BrandEPSON
PHP50.32
Each (On a Reel of 250)
units
XO 27MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +105°C, +85°C
RS Stock No. 173-5846
Mfr. Part No.S75005-20.000-X-15
BrandAKER
PHP69.576
Each (On a Reel of 250)
units
Clock 20MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 173-2537
Mfr. Part No.Q3306JA21012001
BrandEpson
PHP161.156
Each (On a Reel of 250)
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 4.45mm 70°C
RS Stock No. 111-0686
Mfr. Part No.KC7050A18.4320C30E00
BrandKYOCERA
PHP138.70
Each
units
Clock 18.432MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 146-3984
Mfr. Part No.LFSPXO018037 831018037
BrandIQD
PHP61.80
Each (On a Reel of 1000)
units
Clock 12MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 478-5137
Mfr. Part No.Q3309CA40006201
BrandEpson
PHP251.35
Each
units
XO 125MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 478-5200
Mfr. Part No.Q3309CA40000401
BrandEpson
PHP251.35
Each
units
XO 20MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 478-6427
Mfr. Part No.Q3204DC21015900
BrandEpson
PHP231.12
Each
units
XO 18.432MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
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