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. 667-6476
Mfr. Part No.Q33519E40002112
BrandEpson
$4.80
Each
units
XO 120MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.05mm 70°C
RS Stock No. 173-2447
Mfr. Part No.Q33519E40002112
BrandEpson
$2.915
Each (On a Reel of 250)
units
XO 120MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.05mm 70°C
RS Stock No. 111-0778
Mfr. Part No.KC2520B11.2896C10E00
BrandKYOCERA
$6.09
Each
units
Clock 11.2896MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 0.7mm 70°C
RS Stock No. 478-5727
Mfr. Part No.Q3204DC21000300
BrandEpson
$6.56
Each
units
XO 16MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 173-2553
Mfr. Part No.Q3204DC21000300
BrandEpson
$3.517
Each (In a Tube of 35)
units
XO 16MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 478-8580
Mfr. Part No.LFSPXO018032 831018032
BrandIQD
$3.43
Each
units
XO 20MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - 0°C - 1.5mm 70°C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
$0.742
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20°C - 4.6mm 70°C
RS Stock No. 767-5279
Mfr. Part No.5H14ET-20.000
BrandMERCURY
$4.65
Each
units
Clock 20MHz HCMOS, TTL ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 703-7087
Mfr. Part No.AS-3.579545-18-SMD
BrandRALTRON
$0.785
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20°C - 4.6mm 70°C
RS Stock No. 904-7604
Mfr. Part No.X1G004171001212
BrandEPSON
$3.68
Each
units
XO 6MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +85°C, +105°C
RS Stock No. 667-6293
Mfr. Part No.Q3103JC01000111
BrandEpson
$3.63
Each
units
XO 32.768kHz CMOS ±50ppm Surface Mount JC - - - - -40°C - 2.65mm 85°C
RS Stock No. 796-0549
Mfr. Part No.QX14T50B32.00000B50TT
BrandQANTEK
$4.09
Each
units
XO 32MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 703-2161
Mfr. Part No.ASFL1-3.6864MHz-EK
BrandAbracon
$2.99
Each
units
Clock 3.6864MHz HCMOS, TTL ±30ppm Surface Mount SMD - - - - -20°C - 1.3mm 70°C
RS Stock No. 173-5875
Mfr. Part No.QX14T50B10.00000B50TT
BrandQANTEK
$3.128
Each (In a Tube of 25)
units
Clock 10MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 796-0615
Mfr. Part No.QX8T50B20.00000B50TT
BrandQANTEK
$4.73
Each
units
XO 20MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 173-2356
Mfr. Part No.X1G004171001212
BrandEPSON
$1.683
Each (On a Reel of 250)
units
XO 6MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +85°C, +105°C
RS Stock No. 796-0514
Mfr. Part No.QX14T50B16.00000B50TT
BrandQANTEK
$4.59
Each
units
XO 16MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 173-2555
Mfr. Part No.Q3204DC21053300
BrandEpson
$3.517
Each (In a Tube of 35)
units
XO 1MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 796-0485
Mfr. Part No.QX14T50B6.000000B50TT
BrandQANTEK
$3.87
Each
units
XO 6MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 173-2474
Mfr. Part No.X1G004481000712
BrandEPSON
$2.361
Each (On a Reel of 250)
units
XO 16MHz CMOS - Surface Mount - - - - - - - 1.3mm -