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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Description Price Oscillator Type Output Frequency Frequency Stability Load Capacitance Package Type Output Level Minimum Operating Temperature Maximum Operating Temperature Height Dimensions
RS庫存編號 894-9809
製造零件編號LFOCXO063815Bulk
BrandIQD
HK$1,609.39
單位
OCXO 10MHz ±1ppb 15pF 36x27mm DIP Sinewave -40°C 85°C 13mm 36.2 x 27.2 x 13mm
RS庫存編號 894-9798
製造零件編號LFOCXO063802Bulk
BrandIQD
HK$696.20
單位
OCXO 19.2MHz 0.001ppm 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm
RS庫存編號 894-9802
製造零件編號LFOCXO063804Bulk
BrandIQD
HK$696.20
單位
OCXO 38.88MHz ±20ppb 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm
RS庫存編號 894-9782
製造零件編號LFOCXO063800Bulk
BrandIQD
HK$696.20
單位
OCXO 10MHz ±20ppb 15pF SMD HCMOS -40°C 85°C 6.5mm 14.4 x 9.5 x 6.5mm
RS庫存編號 693-6744
製造零件編號MOFH5200C-10.000
BrandMMD
HK$1,677.33
單位
OCXO 10MHz ±200ppb 15pF PDIP HCMOS -20°C 70°C 13.1mm 20.7 x 10.8 x 13.1mm
全新
RS庫存編號 205-5873
製造零件編號SGTM20-3V3-B-H6
BrandSYRLINKS
HK$5,136.56
單位
OXCO 20MHz ±70ppb 15pF Encapsulated DIL14 HCMOS - - - -
全新
RS庫存編號 205-5875
製造零件編號EWOS831-5V0-B-S4
BrandSYRLINKS
HK$5,857.28
單位
OXCO 10MHz ±10ppb 15pF Europack High Sine - - - -
全新
RS庫存編號 205-5874
製造零件編號EWOS10HP-5V0-B-S4
BrandSYRLINKS
HK$5,822.96
單位
OXCO 10MHz ±10ppb 15pF Europack High Sine - - - -
全新
RS庫存編號 205-5870
製造零件編號EWOS40-5V0-B-C1
BrandSYRLINKS
HK$3,575.00
個 (以毎盒:2)
單位
OXCO 40MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -
全新
RS庫存編號 205-5876
製造零件編號SGTM10HP-5V0-B-S5
BrandSYRLINKS
HK$7,436.00
單位
OXCO 10MHz ±10ppb 15pF Encapsulated Europack Sine - - - -
全新
RS庫存編號 205-5869
製造零件編號EWOS20-5V0-B-C1
BrandSYRLINKS
HK$3,500.64
個 (以毎盒:2)
單位
OXCO 20MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -
RS庫存編號 729-3329
製造零件編號OCXOV-AV5-10.000
HK$1,240.85
單位
OCXO 10MHz ±0.2ppm - PDIP HCMOS 0°C 60°C 7.8mm 20.14 x 12.52 x 7.8mm
全新
RS庫存編號 205-5871
製造零件編號SGTM10-3V3-B-H6
BrandSYRLINKS
HK$5,136.56
單位
OXCO 10MHz ±70ppb 15pF Encapsulated DIL14 HCMOS - - - -
全新
RS庫存編號 205-5868
製造零件編號EWOS10-5V0-B-C1
BrandSYRLINKS
HK$3,289.00
個 (以毎盒:2)
單位
OXCO 10MHz ±70ppb 10pF DIL14 Low Clipped Sinewave - - - -