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. 111-0769
Mfr. Part No.KC2520B1.84320C10E00
BrandKYOCERA
TWD102.00
Each
units
Clock 1.8432MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 0.7mm 70°C
RS Stock No. 693-9222
Mfr. Part No.XO53050UITA-24.576
BrandEuroquartz
TWD61.00
Each
units
XO 24.576MHz HCMOS, LSTTL ±50ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 478-5884
Mfr. Part No.Q3204DC21004400
BrandEpson
TWD122.00
Each
units
XO 40MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.1mm 70°C
RS Stock No. 815-0481
Mfr. Part No.QTX533A8.00000B15R
TWD83.00
Each
units
Clock 8MHz HCMOS, TTL ±25ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 111-0693
Mfr. Part No.KC7050A30.0000C30E00
BrandKYOCERA
TWD118.00
Each
units
Clock 30MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 171-0159
Mfr. Part No.AX7PBF3-312.5000C
BrandAbracon
TWD332.20
Each (On a Tape of 50)
units
XO 312.5MHz LVPECL ±25ppm Surface Mount 6-SMD Compatible - - - - -40°C - 1.9mm 85°C
RS Stock No. 173-2465
Mfr. Part No.Q33519E40003112
BrandEpson
TWD61.70
Each (On a Reel of 250)
units
XO 20MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 178-2512
Mfr. Part No.632L3I024M00000
BrandCTS
TWD39.90
Each (On a Reel of 250)
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD 2.97V dc 3.63V dc - - -40°C - 1mm 85°C
RS Stock No. 478-6017
Mfr. Part No.Q3306JA41004101
BrandEpson
TWD119.00
Each
units
XO 16MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 4.45mm 85°C
RS Stock No. 172-1830
Mfr. Part No.KC3225K50.0000C1GE00
BrandKYOCERA
TWD142.00
Each
units
Clock 50MHz CMOS - Surface Mount SMD - - - - -40°C - 0.8mm 85°C
RS Stock No. 173-2522
Mfr. Part No.Q3306JA41025401
BrandEpson
TWD68.10
Each (On a Reel of 250)
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 4.45mm 85°C
RS Stock No. 173-5835
Mfr. Part No.QX733A7.372800B15R
BrandQANTEK
TWD53.50
Each (On a Reel of 1000)
units
Clock 7.3728MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 171-0358
Mfr. Part No.AX7DAF1-100.0000C
BrandAbracon
TWD230.00
Each
units
XO 100MHz LVDS ±25ppm Surface Mount 6-SMD Compatible - - - - -40°C - 1.9mm 85°C
RS Stock No. 178-2688
Mfr. Part No.CB3LV-3I-64M0000
BrandCTS
TWD49.20
Each (In a Pack of 5)
units
Clock 64MHz HCMOS, TTL ±50ppm Surface Mount SMD 3V dc 3.6V dc - - -40°C - 1.8mm 85°C
RS Stock No. 111-0678
Mfr. Part No.KC7050A10.0000C30E00
BrandKYOCERA
TWD102.00
Each
units
Clock 10MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 172-1864
Mfr. Part No.KC5032K27.0000C1GE00
BrandKYOCERA
TWD142.00
Each
units
Clock 27MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 144-1107
BrandRS PRO
TWD78.20
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 178-2002
Mfr. Part No.CB3LV-3I-7M3728
BrandCTS
TWD28.00
Each (On a Reel of 1000)
units
Clock 7.372MHz HCMOS, TTL ±50ppm Surface Mount SMD 3V dc 3.6V dc - - -40°C - 1.8mm 85°C
RS Stock No. 707-9656
Mfr. Part No.CO4305-14.7456-EXT
BrandRALTRON
TWD76.00
Each
units
Clock 14.7456MHz CMOS, TTL ±50ppm Surface Mount SMD - - - - -40°C - 1.8mm 85°C
RS Stock No. 671-9826
Mfr. Part No.S75005-14.7456-X-15
BrandAKER
TWD89.00
Each
units
Clock 14.7456MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C