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. 796-0596
Mfr. Part No.QX8T50B14.31818B50TT
BrandQANTEK
PHP154.41
Each
units
XO 14.3182 MHz HCMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-4649
Mfr. Part No.QX8T50B14.31818B50TT
BrandQANTEK
PHP133.375
Each (In a Tube of 40)
units
XO 14.3182 MHz HCMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-2591
Mfr. Part No.Q3309CA40041701
BrandEpson
PHP186.30
Each (On a Reel of 250)
units
XO 1 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-8675
Mfr. Part No.LFSPXO018040 831018040
BrandIQD
PHP127.87
Each
units
XO 32 MHz HCMOS ±50ppm Surface Mount SMD 2.97 V 3.63 V - - 0 °C - 1.5mm +70 °C
RS Stock No. 173-2596
Mfr. Part No.Q3309CA40005001
BrandEpson
PHP185.824
Each (On a Reel of 250)
units
XO 27 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-5244
Mfr. Part No.Q3309CA40005001
BrandEpson
PHP235.92
Each
units
XO 27 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-5187
Mfr. Part No.Q3309CA40041701
BrandEpson
PHP239.63
Each
units
XO 1 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 667-6293
Mfr. Part No.Q3103JC01000111
BrandEpson
PHP109.80
Each
units
XO 32.768 kHz CMOS ±50ppm Surface Mount JC 0.9 V 3.6 V - - -40 °C - 2.65mm +85 °C
RS Stock No. 173-5846
Mfr. Part No.S75005-20.000-X-15
BrandAKER
PHP107.844
Each (On a Reel of 250)
units
Clock 20 MHz HCMOS ±50ppm Surface Mount SMD 4.5 V 5.5 V - - -40 °C - 1.3mm +85 °C
RS Stock No. 478-6203
Mfr. Part No.Q3306JA21012001
BrandEpson
PHP213.67
Each
units
XO 1 MHz CMOS ±50ppm Surface Mount SMD 4.5 V 5.5 V - - -20 °C - 4.45mm +70 °C
RS Stock No. 173-2363
Mfr. Part No.X1G004171003012
BrandEPSON
PHP50.32
Each (On a Reel of 250)
units
XO 22.5792 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - -40 °C - 0.8mm +105 °C, +85 °C
RS Stock No. 478-5963
Mfr. Part No.Q3204DC21000200
BrandEpson
PHP201.05
Each
units
XO 8 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 173-2366
Mfr. Part No.X1G004171003512
BrandEPSON
PHP50.32
Each (On a Reel of 250)
units
XO 27 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - -40 °C - 0.8mm +105 °C, +85 °C
RS Stock No. 111-0744
Mfr. Part No.KC5032A13.5000CM0E00
BrandKYOCERA
PHP137.62
Each
units
Clock 13.5 MHz CMOS ±50ppm Surface Mount CSMD 1.6 V 5.5 V - - -10 °C - 1mm +70 °C
RS Stock No. 813-6236
Mfr. Part No.QX733A50.00000B15R
BrandQANTEK
PHP109.91
Each
units
Clock 50 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 667-6353
Mfr. Part No.Q33310F70015611
BrandEpson
PHP204.76
Each
units
XO 8 MHz CMOS ±100ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 1.05mm +85 °C
RS Stock No. 173-5839
Mfr. Part No.QX733A50.00000B15R
BrandQANTEK
PHP100.083
Each (On a Reel of 1000)
units
Clock 50 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
PHP26.60
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. 904-7667
Mfr. Part No.X1G004171003512
BrandEPSON
PHP160.89
Each
units
XO 27 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - -40 °C - 0.8mm +105 °C, +85 °C
RS Stock No. 671-9839
Mfr. Part No.S75005-20.000-X-15
BrandAKER
PHP128.36
Each
units
Clock 20 MHz HCMOS ±50ppm Surface Mount SMD 4.5 V 5.5 V - - -40 °C - 1.3mm +85 °C
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