OCXO Oscillators

OCXO stands for Oven Controlled Crystal Oscillator. These oscillators offer higher stability than standard Clock Oscillators or TCXO’s over temperature variations. They can also offer better overall accuracy over the short term (typically 1x10−12 over a few seconds) and longer-term (typically 1x10−8 (10 ppb) per year).

OCXO’s are precision oscillators that can provide a stable oscillation over variations in ambient temperature. OCXO temperature stability can range from the most basic at 500ppb to sophisticated double ovens at 0.02ppb, with most falling between 50ppb and 3ppb.

OCXO’s work through the tight control of their internal oven that keeps the chamber and the crystal at a set temperature, so holding the frequency stable. The temperature selected for the oven is one at which the slope of the crystal's frequency vs. temperature curve is near zero. This is called the &147turn point&148 of the crystal and is normally 75°C to 80°C for commercial OCXO’s. For industrial grade OCXO’s where the maximum temperature can vary up to 85°C, the turn point will be higher still. The important design consideration is that the turn point/oven temperature must be higher than the operating temperature, so frequency control is maintained.

Output logic options for these oscillators consist of HCMOS, Clipped Sine-wave, and Sine-wave configurations


Type of Crystal used


OCXO’s generally use AT-cut or SC-cut (Stress-Compensated) crystals in their design, with the SC-cut being used for higher performance. The SC-cut crystal offer flatter frequency vs. temperature curve reduces warmup time, and has other good attributes, like better ageing, higher Q resulting in better phase noise, less G-sensitivity, and less sensitive to vibration.

Applications:


  • Broadcasting
  • Satellite Systems
  • Telecommunications
  • Data communications
  • Test and measurement

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Omschrijving Prijs Oscillator Type Output Frequency Frequency Stability Load Capacitance Package Type Output Level Minimum Operating Temperature Maximum Operating Temperature Height Dimensions
Nieuw
RS-stocknr. 205-5870
FabrikantnummerEWOS40-5V0-B-C1
FabrikantSYRLINKS
€ 353,125
Each (In a Box of 2)
Aantal stuks
OXCO 40MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -
Nieuw
RS-stocknr. 205-5875
FabrikantnummerEWOS831-5V0-B-S4
FabrikantSYRLINKS
€ 578,56
Each
Aantal stuks
OXCO 10MHz ±10ppb 15pF Europack High Sine - - - -
Nieuw
RS-stocknr. 205-5871
FabrikantnummerSGTM10-3V3-B-H6
FabrikantSYRLINKS
€ 507,37
Each
Aantal stuks
OXCO 10MHz ±70ppb 15pF Encapsulated DIL14 HCMOS - - - -
RS-stocknr. 894-9809
FabrikantnummerLFOCXO063815Bulk
FabrikantIQD
€ 150,72
Each
Aantal stuks
OCXO 10MHz ±1ppb 15pF 36x27mm DIP Sinewave -40°C 85°C 13mm 36.2 x 27.2 x 13mm
Nieuw
RS-stocknr. 205-5869
FabrikantnummerEWOS20-5V0-B-C1
FabrikantSYRLINKS
€ 345,78
Each (In a Box of 2)
Aantal stuks
OXCO 20MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -
RS-stocknr. 729-3329
FabrikantnummerOCXOV-AV5-10.000
FabrikantMicro Crystal
€ 179,28
Each
Aantal stuks
OCXO 10MHz ±0.2ppm - PDIP HCMOS 0°C 60°C 7.8mm 20.14 x 12.52 x 7.8mm
RS-stocknr. 894-9802
FabrikantnummerLFOCXO063804Bulk
FabrikantIQD
€ 75,02
Each
Aantal stuks
OCXO 38.88MHz ±20ppb 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm
Nieuw
RS-stocknr. 205-5874
FabrikantnummerEWOS10HP-5V0-B-S4
FabrikantSYRLINKS
€ 575,17
Each
Aantal stuks
OXCO 10MHz ±10ppb 15pF Europack High Sine - - - -
Nieuw
RS-stocknr. 205-5868
FabrikantnummerEWOS10-5V0-B-C1
FabrikantSYRLINKS
€ 324,875
Each (In a Box of 2)
Aantal stuks
OXCO 10MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -
RS-stocknr. 693-6744
FabrikantnummerMOFH5200C-10.000
FabrikantMMD
€ 177,33
Each
Aantal stuks
OCXO 10MHz ±200ppb 15pF PDIP HCMOS -20°C 70°C 13.1mm 20.7 x 10.8 x 13.1mm
RS-stocknr. 894-9798
FabrikantnummerLFOCXO063802Bulk
FabrikantIQD
€ 75,02
Each
Aantal stuks
OCXO 19.2MHz 0.001ppm 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm
Nieuw
RS-stocknr. 205-5876
FabrikantnummerSGTM10HP-5V0-B-S5
FabrikantSYRLINKS
€ 734,50
Each
Aantal stuks
OXCO 10MHz ±10ppb 15pF Encapsulated Europack Sine - - - -
Nieuw
RS-stocknr. 205-5873
FabrikantnummerSGTM20-3V3-B-H6
FabrikantSYRLINKS
€ 507,37
Each
Aantal stuks
OXCO 20MHz ±70ppb 15pF Encapsulated DIL14 HCMOS - - - -
RS-stocknr. 894-9782
FabrikantnummerLFOCXO063800Bulk
FabrikantIQD
€ 75,17
Each
Aantal stuks
OCXO 10MHz ±20ppb 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm