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Part: VO2268AG-xxxx
Category:
Timing Circuits
-> Oscillators
Description: Oscillator
Company: Murata Manufacturing Co.
Datasheet: Download VO2268AG-xxxx datasheet File size : 189 kB
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Datasheet text preview:
OSCILLATOR PRODUCTS CATALOG
O-20-A
Please visit our website www.murata.com
CONTENTS
Introduction and Standards ..........1-4 RFQ Form/Quick Quote..........5 Part Numbering System .........6 Temperature Compensating High Stability Crystal Oscillators ..........712 Voltage Controlled Oscillators..........1318 Ovenized Crystal Oscillators............1925 Surface Mount Crystal Oscillators ...2628 Digitally Compensated Crystal Oscillators ......29 Microwave Oscillators VCO ..........3031 Phase Lock Loop Modules .....3233
If you have any questions concerning Crystal Oscillator products please contact: Murata Electronics N.A., Inc. State College Operations 1900 West College Avenue State College, PA 16801-2799 Phone: 814-237-1431 Fax: 814-238-0490
Precision Oscillators / Frequency Control Devices
Quality Control
Murata Electronics' Quality Control Department maintains product quality at a level equal to the company's high standards of performance and workmanship, which are certified to ISO-9001 and ISO-14000 requirements. The department is vested with the authority to exercise control over every phase of the manufacturing process. This control extends from incoming inspection of purchased material to in-process inspection, inspection of final product, packaging and shipping.
Environmental Testing
Product quality is guaranteed by our Quality Assurance Program. Many oscillators are custom designed to meet your needs. Standard oscillator design parameters are: Storage Temperature: 55°C to +85°C (to +125°C Optional) Vibration: 10G's, 10 to 500Hz MIL-STD-202, Method 204 Shock: Test condition A 30g, 11msec., 1/2 sine MIL-STD-202, Method 213, Test Condition J
Altitude: Sea Level to space per MIL-STD-202, Method 105 Seal: MIL-STD-202, Method 112 Test Condition D
More stringent specification levels are available. Consult our factory for details. Other environmental conditions encountered by oscillators should be specified so that we may design units to meet your requirements. Such conditions would include soldering profiles, board washing, exposure to moisture, corrosive atmospheres, solvents, etc. Standard environmental tests are conducted on site in the Corporate QA laboratory. Specialized environmental tests are conducted at independent testing laboratories.
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Precision Oscillators / Frequency Control Devices
Introduction and Standards
MURATA ELECTRONICS MANUFACTURES A COMPLETE LINE OF OSCILLATORS
We are a volume producer of TTL, CMOS, ECL and Sine Wave Clock Oscillators for the instrumentation and communication industries. Excellent frequency stability is achieved with TCXO, Temperature Compensated Crystal Oscillators and OCXO, Ovenized (Proportional Control) Crystal Oscillators. Special requirements are met with VCXO, Voltage Controlled Crystal Oscillators, which can be frequency modulated, with combinations of the basic types such as the TC/VCXO or OC/VCXO. Murata has full-line expertise from economy models to sophisticated, high stability, very low phase noise oscillators that are used as standards for microwave transmitters. Our oscillator production lines are closely monitored by Quality Control through Incoming, In-Process and Final Inspections. The Crystal Oscillators featured in this catalog are manufactured exclusively at our manufacturing facility in State College, PA and are designed to meet the requirements of most high technology market applications today. However, oscillators can be custom designed to meet your needs. Send us your specifications. We have full-line capability backed by a well staffed engineering department. Murata will assist you in defining your oscillator requirements and provide the support to take your project from the conceptual stage through implementation, including fast prototype turnaround.
OSCILLATOR TECHNICAL PERFORMANCE
If you have a formal specification, send us a copy for quotation. If not, make a copy of our Specification and RFQ Form to help you specify an oscillator to meet your requirements. Select those specifications relevant to your application; cost increases as electrical and mechanical requirements become more stringent. Murata Electronics will produce a cost effective product which will meet all of your oscillator requirements. Since tradeoffs exist in many instances, we are always happy to quote options when cost/performance or cost/size tradeoffs exist. Attach additional sheets to our specification sheet if necessary.
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Precision Oscillators / Frequency Control Devices
Introduction and Standards
The following material briefly describes our in-house standards and offers some cost/performance tradeoffs.
OUTPUT CHARACTERISTICS
Oscillator output waveforms are either sine or square waves. 1.0 Sine Waves outputs are specified by stating the amplitude of the signal (mW or VRMS and the nominal load impedance (typically) 50 ohms or 1K ohms). Harmonic and Sub-Harmonic distortion less than 20dBc is standard. Deviations from the standards can be accommodated. Consult our engineering department. 2.0 Square Wave* TTL Logic "0" Level Logic "1" Level Symmetry Load Freq. Range 0.4V Max. 2.4V Min. 40/60 10 Gates 1Hz to 100MHz CMOS 1.0V Max. Vcc 1.0V 40/60 50 pF Max. 1Hz to 100MHz ECL 1.89V 0.89 40/60 50 ohms to 2VDC 4.0MHz to 700MHz
ENVIRONMENTAL CONDITIONS
See Page 1.
FREQUENCY RANGE
From less than 1Hz to 1GHz, Murata Electronics designs typically center around the "AT" cut crystals, but "SC," "IT," and other cuts are used for certain applications. Fundamental mode crystals from 3MHz and overtones from 5 to 400MHz are utilized in the oscillators. This range is extended through the use of dividers and multipliers. (Oscillators in the microwave range are available through the Murata RF and Microwave Products Group in State College, Pennsylvania.)
FREQUENCY STABILITY
ls generally defined in two ways: 1.0 Total Frequency Stability the maximum frequency excursion from the nominal for all conditions. This is usually expressed as a ± fraction centered at the nominal frequency. FREQUENCY STABILITY [ppm] 2.0 Specific Stabilities 2.1 Accuracy the frequency setting tolerance at room temperature at time of shipment. Oscillators may incorporate external adjustments for exact calibration. TCXO's typically exhibit a resolution of ±1pp 107. For OCXO's, the typical resolution is to ±1pp 10 9. 2.2 Frequency Stability Versus Temperature a maximum change from the nominal frequency. Oscillators relying on the temperature characteristics of the "AT" crystal can be designed to meet a stability requirement as tight as ±10ppm from 10°C to +60°C. Tighter stabilities to ± 0.1ppm require temperature compensation techniques. Ovenized oscillators are used for stabilities to ±5pp 1010. 2.3 Frequency Stabilities Versus Supply Voltage and Load Variation these parameters may be improved by the use of voltage regulation and additional buffer stages. The tighter the stability requirements, the more complex the design. 2.4 Stability Versus Time can be expressed over periods of milliseconds to years. Through use of high quality crystals typical aging rates of ±1ppm/year are achieved. For OCXO's, it is possible to achieve aging rates as low as ±5pp 1010 per day. Short term stability can be expressed as an Allan Variance over a range of gate times from less than 1msec to 10sec, or in terms of SSB phase noise in the frequency domain. f [Hz] fc [MHz]
*Specify logic type to be driven
RELATIVE FREQUENCY STABILITY OF TYPICAL CRYSTAL OSCILLATOR TYPES
+10ppm
Uncompensated "AT" Cut Crystal Osc. (XO)
f/f 0 Ovenized Crystal Oscillator (OCXO) Analog Temp. Compensation (TCXO)
10ppm 40°C +20°C Temperature +80°C
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