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 Frequency Stability Package Type Minimum Operating Supply Voltage Output Level Maximum Operating Supply Voltage Mounting Type Minimum Operating Temperature Height Maximum Operating Temperature Dimensions Priced to Clear Load Capacitance
RS Stock No. 671-9820
Mfr. Part No.S75005-16.000-X-15
BrandAKER
£2.02
Each
Units
Clock 16 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 173-4605
Mfr. Part No.S75005-16.000-X-15
BrandAKER
£1.457
Each (On a Reel of 250)
Units
XO 16 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 671-9817
Mfr. Part No.S75005-8.000-X-15
BrandAKER
£2.39
Each
Units
Clock 8 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 173-4604
Mfr. Part No.S75005-8.000-X-15
BrandAKER
£1.457
Each (On a Reel of 250)
Units
XO 8 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 671-9839
Mfr. Part No.S75005-20.000-X-15
BrandAKER
£1.63
Each
Units
Clock 20 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 173-5846
Mfr. Part No.S75005-20.000-X-15
BrandAKER
£0.894
Each (On a Reel of 250)
Units
Clock 20 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 672-0163
Mfr. Part No.S533025-32.768K-X-15
BrandAKER
£2.28
Each
Units
Clock 32.768 kHz ±25ppm SMD 3.14 V HCMOS 3.46 V Surface Mount -40 °C 1.3mm +85 °C 5 x 3.2 x 1.3mm - -
RS Stock No. 173-4705
Mfr. Part No.S533025-32.768K-X-15
BrandAKER
£2.244
Each (On a Reel of 250)
Units
XO 32.768 kHz ±25ppm SMD 3.14 V HCMOS 3.46 V Surface Mount -40 °C 1.3mm +85 °C 5 x 3.2 x 1.3mm - -
RS Stock No. 173-4623
Mfr. Part No.S53305-8.000-X
BrandAKER
£1.537
Each (On a Reel of 250)
Units
XO 8 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 671-9671
Mfr. Part No.S53305-8.000-X
BrandAKER
£2.06
Each
Units
Clock 8 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 173-5841
Mfr. Part No.S73305-12.000-X-15
BrandAKER
£1.343
Each (On a Reel of 250)
Units
Clock 12 MHz ±50ppm SMD 2.97 V HCMOS 3.63 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 671-9628
Mfr. Part No.S73305-12.000-X-15
BrandAKER
£1.54
Each
Units
Clock 12 MHz ±50ppm SMD 2.97 V HCMOS 3.63 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 671-9621
Mfr. Part No.S73305-8.000-X-15
BrandAKER
£1.81
Each
Units
Clock 8 MHz ±50ppm SMD 2.97 V HCMOS 3.63 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 173-5840
Mfr. Part No.S73305-8.000-X-15
BrandAKER
£1.228
Each (On a Reel of 250)
Units
Clock 8 MHz ±50ppm SMD 2.97 V HCMOS 3.63 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 173-5863
Mfr. Part No.S53305-10.000-X
BrandAKER
£0.943
Each (On a Reel of 250)
Units
Clock 10 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 671-9674
Mfr. Part No.S53305-10.000-X
BrandAKER
£2.74
Each
Units
Clock 10 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 173-5857
Mfr. Part No.S53305-24.000-X
BrandAKER
£0.943
Each (On a Reel of 250)
Units
Clock 24 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 671-9696
Mfr. Part No.S53305-24.000-X
BrandAKER
£1.72
Each
Units
Clock 24 MHz ±50ppm SMD 3.14 V CMOS 3.46 V Surface Mount -40 °C 0.95mm +85 °C 5 x 3.2 x 0.95mm - -
RS Stock No. 671-9810
Mfr. Part No.S75005-10.000-X-15
BrandAKER
£2.02
Each
Units
Clock 10 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -
RS Stock No. 671-9854
Mfr. Part No.S75005-50.000-X-15
BrandAKER
£1.49
Each
Units
Clock 50 MHz ±50ppm SMD 4.5 V HCMOS 5.5 V Surface Mount -40 °C 1.3mm +85 °C 7 x 5 x 1.3mm - -