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. 672-0618
Mfr. Part No.3H53ET-16.000
BrandMERCURY
TWD71.00
Each
units
Clock 16MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 671-9781
Mfr. Part No.S23305-20.000-X
BrandAKER
TWD169.00
Each
units
- 20MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 178-2540
Mfr. Part No.632L3I040M00000
BrandCTS
TWD36.60
Each (On a Reel of 250)
units
Clock 40MHz HCMOS ±50ppm Surface Mount SMD 2.97V dc 3.63V dc - - -40°C - 1mm 85°C
RS Stock No. 172-1758
Mfr. Part No.KC7050K40.0000C1GE00
BrandKYOCERA
TWD113.70
Each (On a Reel of 1000)
units
Clock 40MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 178-1967
Mfr. Part No.CB3LV-3I-100M0000
BrandCTS
TWD60.20
Each (On a Reel of 1000)
units
Clock 100MHz HCMOS, TTL ±50ppm Surface Mount SMD 3V dc 3.6V dc - - -40°C - 1.8mm 85°C
RS Stock No. 178-1926
Mfr. Part No.632L3I024M00000
BrandCTS
TWD31.20
Each (On a Reel of 3000)
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD 2.97V dc 3.63V dc - - -40°C - 1mm 85°C
RS Stock No. 144-1106
BrandRS PRO
TWD75.40
Each (In a Pack of 5)
units
Clock 20MHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 173-2544
Mfr. Part No.Q3306JA21014001
BrandEpson
TWD68.10
Each (On a Reel of 250)
units
XO 32MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 4.45mm 70°C
RS Stock No. 478-5727
Mfr. Part No.Q3204DC21000300
BrandEpson
TWD122.00
Each
units
XO 16MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 146-9538
Mfr. Part No.LFSPXO018037 831018037
BrandIQD
TWD59.70
Each (In a Pack of 10)
units
Clock 12MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 178-2033
Mfr. Part No.633P15623I3T
BrandCTS
TWD91.80
Each (On a Reel of 1000)
units
Clock 156MHz LVPECL ±100ppm Surface Mount SMD 3.13V dc 3.46V dc - - -40°C - 0.9mm 85°C
RS Stock No. 178-2000
Mfr. Part No.CB3LV-3I-66M6666
BrandCTS
TWD30.70
Each (On a Reel of 1000)
units
Clock 66.666MHz HCMOS, TTL ±50ppm Surface Mount SMD 3V dc 3.6V dc - - -40°C - 1.8mm 85°C
RS Stock No. 667-6331
Mfr. Part No.Q33310F70004811
BrandEpson
TWD44.00
Each
units
XO 25MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 904-7613
Mfr. Part No.X1G004171001712
BrandEPSON
TWD71.00
Each
units
XO 11.2896MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +85°C, +105°C
RS Stock No. 173-2463
Mfr. Part No.Q33519E40001312
BrandEpson
TWD39.60
Each (On a Reel of 250)
units
XO 50MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 173-2609
Mfr. Part No.Q3851CA00005512
BrandEpson
TWD140.80
Each (On a Reel of 250)
units
XO 50MHz CMOS ±100ppm Surface Mount SMD - - - - -10°C - 1.2mm 70°C
RS Stock No. 172-1710
Mfr. Part No.KC5032K25.0000C1GE00
BrandKYOCERA
TWD113.70
Each (On a Reel of 1000)
units
Clock 25MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 672-0735
Mfr. Part No.3HM57ET-48.000R-C1.5
BrandMERCURY
TWD447.00
Each
units
- 48MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.8mm 85°C
RS Stock No. 671-5701
Mfr. Part No.LFSPXO025492 831025492
BrandIQD
TWD69.00
Each
units
XO 12MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.1mm 85°C
RS Stock No. 178-2661
Mfr. Part No.CB3LV-3I-8M0000
BrandCTS
TWD42.90
Each (In a Pack of 10)
units
Clock 8MHz HCMOS, TTL ±50ppm Surface Mount SMD 3V dc 3.6V dc - - -40°C - 1.8mm 85°C