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 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. 144-5007
BrandRS PRO
£1.18
Each (In a Pack of 5)
Units
Clock 16 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -40 °C 1mm +85 °C 3.2 x 2.5 x 1mm - -
RS Stock No. 144-5008
BrandRS PRO
£1.656
Each (In a Pack of 5)
Units
Clock 24 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -40 °C 1mm +85 °C 3.2 x 2.5 x 1mm - -
RS Stock No. 144-5009
BrandRS PRO
£1.656
Each (In a Pack of 5)
Units
Clock 25 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -40 °C 1mm +85 °C 3.2 x 2.5 x 1mm - -
RS Stock No. 144-5010
BrandRS PRO
£2.00
Each (In a Pack of 5)
Units
Clock 25 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -10 °C 1mm +70 °C 3.2 x 2.5 x 1mm - -
RS Stock No. 144-5011
BrandRS PRO
£0.638
Each (In a Pack of 5)
Units
Clock 4 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -10 °C 1mm +70 °C 3.2 x 2.5 x 1mm - -
RS Stock No. 144-1105
BrandRS PRO
£1.892
Each (In a Pack of 5)
Units
Clock 32.768 kHz ±20ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1113
BrandRS PRO
£1.656
Each (In a Pack of 5)
Units
Clock 25 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-5013
BrandRS PRO
£1.02
Each (In a Pack of 2)
Units
Clock 100 MHz ±50ppm SMD - CMOS 1.8 → 3.3 V dc Surface Mount -40 °C 1mm +85 °C 5 x 3.2 x 1mm - -
RS Stock No. 144-1106
BrandRS PRO
£0.684
Each (In a Pack of 5)
Units
Clock 20 MHz ±25ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1119
BrandRS PRO
£1.03
Each (In a Pack of 5)
Units
Clock 100 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -10 °C 1.8mm +70 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1111
BrandRS PRO
£1.986
Each (In a Pack of 5)
Units
Clock 24 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1114
BrandRS PRO
£0.298
Each (In a Pack of 5)
Units
Clock 27 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-5014
BrandRS PRO
£2.955
Each (In a Pack of 2)
Units
Clock 125 MHz ±50ppm SMD - CMOS 1.8 → 3.3 V dc Surface Mount -40 °C 1mm +85 °C 5 x 3.2 x 1mm - -
RS Stock No. 144-1116
BrandRS PRO
£2.00
Each (In a Pack of 5)
Units
Clock 33.33 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -10 °C 1.8mm +70 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1101
BrandRS PRO
£0.98
Each (In a Pack of 5)
Units
Clock 10 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1mm +85 °C 2.5 x 2 x 1mm - -
RS Stock No. 144-1107
BrandRS PRO
£1.764
Each (In a Pack of 5)
Units
Clock 25 MHz ±25ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-1097
BrandRS PRO
£1.415
Each (In a Pack of 2)
Units
Clock 32.768 kHz ±25ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 0.8mm +85 °C 2 x 1.6 x 0.8mm - -
RS Stock No. 144-5016
BrandRS PRO
£0.766
Each (In a Pack of 5)
Units
Clock 24 MHz ±50ppm SMD - CMOS 1.8 → 3.3 V dc Surface Mount -40 °C 1mm +85 °C 5 x 3.2 x 1mm - -
RS Stock No. 144-1120
BrandRS PRO
£2.254
Each (In a Pack of 5)
Units
Clock 125 MHz ±50ppm SMD - CMOS 3.3 V dc Surface Mount -40 °C 1.8mm +85 °C 7 x 5 x 1.8mm - -
RS Stock No. 144-5006
BrandRS PRO
£3.55
Each (In a Pack of 2)
Units
Clock 125 MHz ±50ppm SMD - HCMOS 3.3 V dc Surface Mount -40 °C 1mm +85 °C 3.2 x 2.5 x 1mm - -
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