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 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. 144-1115
BrandRS PRO
SGD3.566
Each (In a Pack of 5)
units
Clock 3.68MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5009
BrandRS PRO
SGD3.732
Each (In a Pack of 5)
units
Clock 25MHz HCMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 144-1118
BrandRS PRO
SGD5.368
Each (In a Pack of 5)
units
Clock 100MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-1102
BrandRS PRO
SGD4.288
Each (In a Pack of 5)
units
Clock 20MHz CMOS ±50ppm Surface Mount SMD - 1.8V dc - - -20°C - 1mm 70°C
RS Stock No. 144-1116
BrandRS PRO
SGD4.292
Each (In a Pack of 5)
units
Clock 33.33MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -10°C - 1.8mm 70°C
RS Stock No. 144-1109
BrandRS PRO
SGD3.732
Each (In a Pack of 5)
units
Clock 10MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5001
BrandRS PRO
SGD2.364
Each (In a Pack of 5)
units
Clock 14.74MHz TTL ±50ppm Surface Mount SMD - 5V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-1120
BrandRS PRO
SGD5.12
Each (In a Pack of 5)
units
Clock 125MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-1113
BrandRS PRO
SGD3.732
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5017
BrandRS PRO
SGD4.036
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 144-1097
BrandRS PRO
SGD7.11
Each (In a Pack of 2)
units
Clock 32.768kHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 0.8mm 85°C
RS Stock No. 144-1123
BrandRS PRO
SGD4.128
Each (In a Pack of 5)
units
Clock 80MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-1111
BrandRS PRO
SGD4.474
Each (In a Pack of 5)
units
Clock 24MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5007
BrandRS PRO
SGD2.658
Each (In a Pack of 5)
units
Clock 16MHz HCMOS ±50ppm Surface Mount SMD - 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 144-1098
BrandRS PRO
SGD5.384
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - 1.8V dc - - -20°C - 0.8mm 70°C
RS Stock No. 144-1119
BrandRS PRO
SGD6.26
Each (In a Pack of 5)
units
Clock 100MHz CMOS ±50ppm Surface Mount SMD - 3.3V dc - - -10°C - 1.8mm 70°C
RS Stock No. 144-1107
BrandRS PRO
SGD3.974
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5016
BrandRS PRO
SGD3.82
Each (In a Pack of 5)
units
Clock 24MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 144-1108
BrandRS PRO
SGD4.808
Each (In a Pack of 5)
units
Clock 32MHz CMOS ±25ppm Surface Mount SMD - 3.3V dc - - -40°C - 1.8mm 85°C
RS Stock No. 144-5018
BrandRS PRO
SGD3.808
Each (In a Pack of 5)
units
Clock 50MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3V dc - - -40°C - 1mm 85°C