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. 478-5222
Mfr. Part No.Q3309CA40004601
BrandEpson
HK$43.72
Each
units
XO 24 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 173-2595
Mfr. Part No.Q3309CA40004601
BrandEpson
HK$30.309
Each (On a Reel of 250)
units
XO 24 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-5317
Mfr. Part No.Q3309CA40007901
BrandEpson
HK$31.29
Each
units
XO 60 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-6326
Mfr. Part No.SG8002JAPHB5MHZ
BrandEPSON
HK$23.76
Each
units
XO 5 MHz CMOS ±50ppm Surface Mount SMD 4.5 V 5 V - - -20 °C - 4.45mm +70 °C
RS Stock No. 173-2548
Mfr. Part No.SG8002JAPHB5MHZ
BrandEPSON
HK$26.286
Each (On a Reel of 250)
units
XO 5 MHz CMOS ±50ppm Surface Mount SMD 4.5 V 5 V - - -20 °C - 4.45mm +70 °C
RS Stock No. 173-2602
Mfr. Part No.Q3309CA40007901
BrandEpson
HK$30.309
Each (On a Reel of 250)
units
XO 60 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 148-5366
Mfr. Part No.LFSPXO018038 831018038
BrandIQD
HK$9.065
Each (In a Pack of 10)
units
Clock 16 MHz HCMOS ±50ppm Surface Mount SMD - 3.3 V - - 0 °C - 1.4mm +70 °C
RS Stock No. 767-5232
Mfr. Part No.5H14ET-1.8432
BrandMERCURY
HK$17.10
Each
units
Clock 1.8432 MHz HCMOS, TTL ±50ppm Through Hole PDIP 4.75 V 5.25 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-2555
Mfr. Part No.Q3204DC21053300
BrandEpson
HK$29.571
Each (In a Tube of 35)
units
XO 1 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 767-5272
Mfr. Part No.5H14ET-24.000
BrandMERCURY
HK$18.22
Each
units
Clock 24 MHz HCMOS, TTL ±50ppm Through Hole PDIP 4.75 V 5.25 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 478-5749
Mfr. Part No.Q3204DC21053300
BrandEpson
HK$22.95
Each
units
XO 1 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 173-2532
Mfr. Part No.Q3306JA41027701
BrandEpson
HK$26.286
Each (On a Reel of 250)
units
XO 5 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 4.45mm +85 °C
RS Stock No. 146-3949
Mfr. Part No.LFSPXO018038 831018038
BrandIQD
HK$6.02
Each (On a Reel of 1000)
units
Clock 16 MHz HCMOS ±50ppm Surface Mount SMD - 3.3 V - - 0 °C - 1.4mm +70 °C
RS Stock No. 478-6152
Mfr. Part No.Q3306JA41027701
BrandEpson
HK$23.76
Each
units
XO 5 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 4.45mm +85 °C
RS Stock No. 173-4577
Mfr. Part No.QX733A8.000000B15R
BrandQANTEK
HK$16.324
Each (On a Reel of 1000)
units
Clock 8 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 813-6194
Mfr. Part No.QX733A8.000000B15R
BrandQANTEK
HK$12.37
Each
units
Clock 8 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 173-2572
Mfr. Part No.Q3204DC21025900
BrandEpson
HK$29.571
Each (In a Tube of 35)
units
XO 5 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-5929
Mfr. Part No.Q3204DC21025900
BrandEpson
HK$25.10
Each
units
XO 5 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-5137
Mfr. Part No.Q3309CA40006201
BrandEpson
HK$26.19
Each
units
XO 125 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 707-9690
Mfr. Part No.COM2305-12.000-EXT
BrandRALTRON
HK$13.85
Each
units
XO 12 MHz HCMOS ±50ppm Surface Mount SMD 3 V 3.6 V - - -40 °C - 1mm +85 °C
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