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. 813-6251
Mfr. Part No.QX533A24.57600B15R
BrandQANTEK
£1.69
Each
Units
Clock 24.576 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 1.3mm +85 °C 5 x 3.2 x 1.3mm - -
RS Stock No. 173-5867
Mfr. Part No.QX533A24.57600B15R
BrandQANTEK
£0.808
Each (On a Reel of 1000)
Units
Clock 24.576 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 1.3mm +85 °C 5 x 3.2 x 1.3mm - -
RS Stock No. 796-0463
Mfr. Part No.QX14T50B1.843200B50TT
BrandQANTEK
£1.67
Each
Units
XO 1.8432 MHz ±50ppm DIP14 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 20.8 x 13.2 x 5.08mm - -
RS Stock No. 173-5868
Mfr. Part No.QX14T50B1.843200B50TT
BrandQANTEK
£1.351
Each (In a Tube of 25)
Units
Clock 1.8432 MHz ±50ppm DIP14 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 20.8 x 13.2 x 5.08mm - -
RS Stock No. 796-0558
Mfr. Part No.QX8T50B1.843200B50TT
BrandQANTEK
£0.85
Each
Units
XO 1.8432 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-4641
Mfr. Part No.QX8T50B1.843200B50TT
BrandQANTEK
£0.869
Each (In a Tube of 40)
Units
XO 1.8432 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 813-6292
Mfr. Part No.QX333A24.00000B15R
BrandQANTEK
£1.55
Each
Units
Clock 24 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 1.2mm +85 °C 3.2 x 2.5 x 1.2mm - -
RS Stock No. 173-4608
Mfr. Part No.QX333A24.00000B15R
BrandQANTEK
£1.243
Each (On a Reel of 1000)
Units
Clock 24 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 1.2mm +85 °C 3.2 x 2.5 x 1.2mm - -
RS Stock No. 173-4651
Mfr. Part No.QX8T50B20.00000B50TT
BrandQANTEK
£1.349
Each (In a Tube of 40)
Units
XO 20 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 796-0615
Mfr. Part No.QX8T50B20.00000B50TT
BrandQANTEK
£1.86
Each
Units
XO 20 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 796-0495
Mfr. Part No.QX14T50B10.00000B50TT
BrandQANTEK
£1.86
Each
Units
XO 10 MHz ±50ppm DIP14 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 20.8 x 13.2 x 5.08mm - -
RS Stock No. 796-0564
Mfr. Part No.QX8T50B4.000000B50TT
BrandQANTEK
£1.86
Each
Units
XO 4 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-4650
Mfr. Part No.QX8T50B12.00000B50TT
BrandQANTEK
£1.349
Each (In a Tube of 40)
Units
XO 12 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 796-0599
Mfr. Part No.QX8T50B12.00000B50TT
BrandQANTEK
£1.69
Each
Units
XO 12 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-4645
Mfr. Part No.QX8T50B10.00000B50TT
BrandQANTEK
£1.349
Each (In a Tube of 40)
Units
XO 10 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-4655
Mfr. Part No.QX8T50B4.000000B50TT
BrandQANTEK
£1.349
Each (In a Tube of 40)
Units
XO 4 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-5875
Mfr. Part No.QX14T50B10.00000B50TT
BrandQANTEK
£1.351
Each (In a Tube of 25)
Units
Clock 10 MHz ±50ppm DIP14 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 20.8 x 13.2 x 5.08mm - -
RS Stock No. 796-0580
Mfr. Part No.QX8T50B10.00000B50TT
BrandQANTEK
£1.86
Each
Units
XO 10 MHz ±50ppm PDIP 4.5 V HCMOS 5.5 V Through Hole -40 °C 5.08mm +85 °C 13.21 x 13.21 x 5.08mm - -
RS Stock No. 173-5899
Mfr. Part No.QX233A24.00000B15R
BrandQANTEK
£1.42
Each (On a Reel of 1000)
Units
Clock 24 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 0.95mm +85 °C 2.5 x 2 x 0.95mm - -
RS Stock No. 813-6337
Mfr. Part No.QX233A24.00000B15R
BrandQANTEK
£1.76
Each
Units
Clock 24 MHz ±25ppm SMD - HCMOS 3.3 V Surface Mount -40 °C 0.95mm +85 °C 2.5 x 2 x 0.95mm - -