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 oscillators 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
$5.75
Each
units
XO 120 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 173-2447
Mfr. Part No.Q33519E40002112
BrandEpson
$2.944
Each (On a Reel of 250)
units
XO 120 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 111-0778
Mfr. Part No.KC2520B11.2896C10E00
BrandKYOCERA
$5.00
Each
units
Clock 11.2896 MHz CMOS ±50ppm Surface Mount CSMD 1.6 V 3.63 V - - -10 °C - 0.7mm +70 °C
RS Stock No. 173-2553
Mfr. Part No.Q3204DC21000300
BrandEpson
$6.126
Each (In a Tube of 35)
units
XO 16 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-5727
Mfr. Part No.Q3204DC21000300
BrandEpson
$6.32
Each
units
XO 16 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
$0.822
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. 478-8580
Mfr. Part No.LFSPXO018032 831018032
BrandIQD
$3.25
Each
units
XO 20 MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5 V 5.5 V - - 0 °C - 1.5mm +70 °C
RS Stock No. 173-2344
Mfr. Part No.X1G004171004212
BrandEPSON
$1.70
Each (On a Reel of 250)
units
XO 36 MHz CMOS - Surface Mount SMD 1.6 V 3.6 V - - -40 °C - 0.8mm +105 °C
RS Stock No. 827-4757
Mfr. Part No.X1G004171004212
BrandEPSON
$2.30
Each
units
XO 36 MHz CMOS - Surface Mount SMD 1.6 V 3.6 V - - -40 °C - 0.8mm +105 °C
RS Stock No. 173-2445
Mfr. Part No.Q33519E40001412
BrandEpson
$2.944
Each (On a Reel of 250)
units
XO 96 MHz CMOS ±100ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 703-7087
Mfr. Part No.AS-3.579545-18-SMD
BrandRALTRON
$0.796
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20 °C - 4.6mm +70 °C
RS Stock No. 667-6467
Mfr. Part No.Q33519E40001412
BrandEpson
$5.03
Each
units
XO 96 MHz CMOS ±100ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.05mm +70 °C
RS Stock No. 767-5279
Mfr. Part No.5H14ET-20.000
BrandMERCURY
$4.38
Each
units
Clock 20 MHz HCMOS, TTL ±50ppm Through Hole PDIP 4.75 V 5.25 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 796-0485
Mfr. Part No.QX14T50B6.000000B50TT
BrandQANTEK
$2.70
Each
units
XO 6 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-2406
Mfr. Part No.X1G004451000512
BrandEPSON
$2.10
Each (On a Reel of 250)
units
XO 27 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - - - 1.1mm -
RS Stock No. 146-3967
Mfr. Part No.LFSPXO025494 831025494
BrandIQD
$1.668
Each (On a Reel of 1000)
units
Clock 16 MHz CMOS ±50ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 796-0514
Mfr. Part No.QX14T50B16.00000B50TT
BrandQANTEK
$3.45
Each
units
XO 16 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 767-5254
Mfr. Part No.5H14ET-10.000
BrandMERCURY
$4.17
Each
units
Clock 10 MHz HCMOS, TTL ±50ppm Through Hole PDIP 4.75 V 5.25 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-5880
Mfr. Part No.QX14T50B32.00000B50TT
BrandQANTEK
$4.504
Each (In a Tube of 25)
units
Clock 32 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 796-0495
Mfr. Part No.QX14T50B10.00000B50TT
BrandQANTEK
$4.38
Each
units
XO 10 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
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