Tech Talk

These product series are simply CMOS output clock oscillators where the output frequency is primarily controlled by a quartz crystal resonator.

The EB13D7 and EB15D7 series oscillators can be used in any of the following applications:

• 1G, 10G Ethernet
• 1G, 2G, 4G, 10G Fibre Channel
• SONET
• SDH
• PCI Express

The EB13D7 and EB15D7 series oscillators offer:

• Output frequencies from 150.000MHz to 250.000MHz
• Supply Voltages of 3.3V_DC (EB13D7) or 2.5V_DC (EB15D7)
• Industry standard 5mm*7mm four pad SMD package
• Low RMS phase jitter, <1ps
• Improved frequency temperature stability through the use of a fundamental mode BAW (bulk acoustic wave) crystal
• Tolerance/Stability down to ±50ppm Maximum
• Operating Temperature Range of 0°C to +70°C
• High speed HCMOS output with fast rise and fall times
• Tight duty cycle of 50% ±5%
• Tri-state function high impedance output
• RoHS Compliant (Pb-free) with high temperature 260°C reflow capability

These product series feature specific frequencies ranging from 150.000MHz to 250.000MHz. A list of standard frequencies is listed on the applicable specification sheet. Certain frequencies can be provided between, above, and below these frequency ranges on a case-by-case basis. Please contact us with your custom requirements.

The EB13D7 series offers operation at 3.3V_DC±10%. The EB15D7 offers 2.5V_DC±5% for lower voltage applications.

The input current specification is listed as a maximum on the respective datasheet. These current ratings are for oscillators with the specified output load connected.

Ecliptek offers ±50ppm frequency stability option. Ecliptek specifies the frequency stability performance of the device inclusive of specific oscillator operating conditions. This is often called the "Inclusive Method". Ecliptek specifies the following parameters for these series of products:

• Frequency Stability over Operating Temperature Range
• Supply Voltage
• Output Load
• First Year Aging
• Shock
• Vibration

Ecliptek offers a commercial temperature range of 0°C to +70°C.

Aging is the systematic change in frequency with time due to internal changes in the crystal and/or oscillator. Aging is often expressed as a maximum value in parts per million per year [ppm/year]. The rate of aging is logarithmic in nature. The following factors effect crystal aging: adsorption and desorption of contamination on the surfaces of the quartz, stress relief of the mounting and bonding structures, material outgassing, and seal integrity. At a rated operating temperature of 25°C, these series of products typically age at a rate of less than ±3ppm over the first year, ±1ppm over the following year, logarithmically declining each year there after.

Start-up time for this series is specified at 10mSec maximum. Note: In order to ensure proper start-up, the power supply start-up should have an exponential curve typical of a capacitive charge of a linear voltage ramp. If you have a special voltage start-up profile (i.e. odd ramp steps or shapes), please contact us to discuss possible oscillator performance issues.

Ecliptek offers this oscillator product series with a low voltage HCMOS (LVHCMOS) output. The oscillator output topology is designed so as to optimize circuit load matching and signal performance. Signal integrity is optimized when the low impedance output of the oscillator, typically 7 ohms, is driving a high impedance-low capacitance input.

The Ecliptek EB13D7 and EB15D7 series oscillators have a high speed CMOS output driver that enables the output signal to swing from ground to VDD. Ecliptek offers the 3.3V_DC EB13D7 and the 2.5V_DC EB15D7 series with a 15pF HCMOS output load. If a customer requires a different load from that specified on the datasheet, please consult the factory with your custom requirements.

The standard duty cycle specification is 45% minimum, 55% maximum, measured at 50% of the waveform.

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Jitter is the measure in the time domain and is specified in picoseconds (pSec) as a maximum RMS value. Phase noise is a measure in the frequency domain and is specified in decibels at various offset points from the carrier (-dBc/Hz). Ecliptek uses a proprietary design, exclusive processing methods, and a unique output driver circuit enabling these series of oscillators to have exceptionally low rms phase jitter. The RMS jitter parameters can be found on the EB13D7 and EB15D7 series specifications sheets.

Both of these product series offer a tri-state output capability. The output is three-stated (tri-state condition) when the voltage at the control pad is set to a logic low state. In this condition, the oscillator continues to operate, but the output pin is now in a high impedance state. If the voltage at the control pad (pad 1) is set to no connect or a logic high state, the output (pad 3) is enabled (clocking). Note: The oscillator has an internal pull-up resistor on the control pad (50k ohms typical).

These product series do not offer a 'No Connect' option for pin 1, only the tri-state/output enable (TS) option is available. However, the customer can use these oscillator series as a non-tri-state oscillator by simply setting the voltage on pad 1 to either no connect or logic high. The oscillator has an internal pull up resistor on pad 1 (50k ohms typical).

These products consist of a single ASIC and a fundamental mode BAW quartz crystal packaged inside a hermetically sealed ceramic leadless SMD package. The leadless SMD package has four gold plated contact I/O pads. The package has a seam sealed metal cover that is case grounded for improved EMI performance. The package is RoHS compliant and is Pb-free.

It is recommended that the customer use the test fixture specified by Ecliptek. Please see the applicable series test circuit diagram (EB13D7, EB15D7) for the suggested test circuit.

These product series are RoHS compliant and Pb-free as defined in the Ecliptek Pb-free Roadmap and are capable of withstanding industry standard high temperature convection reflow processes. See the Recommended Solder Reflow methods listed on the data sheet.

A RoHS product certification letter can be obtained directly from our website by using our Ecliptek RoHS Certification Letter Generator.

If the part number is specified with the TR option, the series are delivered to the customer in EIA481A compliant tape and reel packaging. Without the TR option, these products are delivered to the customer in industry standard plastic tubes. See the applicable specification (EB13D7, EB15D7) for packaging dimensions and suggested solder reflow diagrams. These product is capable of withstanding industry standard high temperature (260°C, 10 seconds) convection reflow processes.

Please see the Ecliptek Competitor Part Number Crosser

Ordering on-line is simple. Simply fill in the required information in the part number constructor for the specific series that you would like to order. You can go to a part number constructor now by selecting a link below:

• EB13D7 series part number constructor
• EB15D7 series part number constructor

The engineering staff at Ecliptek can provide applications engineering support or answer customer technical questions.

Find a representative or distributor and request your desired custom specifications. You can also contact the Ecliptek Sales Staff directly at the factory. Complete the Ecliptek Custom Oscillator Price and Delivery Request page from our website. From this page you will be able to enter custom specifications that are unavailable from the standard part number constructor forms. These parameters will be sent to our engineering team where they will be evaluated. Upon acceptance, a custom part number will be assigned and an engineering document created to represent your product.

The environmental and mechanical specifications for this series can be found on the applicable Environmental & Mechanical section of the EB13D7 and EB15D7 series datasheets.

Failure in Time (FIT) and Mean Time To Failure (MTTF) reliability data is available from the factory. Please contact us with your request for this data.

θ_JA and θ_JC values are available for these product series. Please see the Oscillator Thermal Resistance information provided.

IBIS modeling information is available for these product series.

• EB13D7 IBIS Model
• EB15D7 IBIS Model

Ecliptek can provide technical information, material declaration data in compliance with IPC-1752, and reliability qualification data, as required, to assist customers with their RoHS Compliance (Pb-free) concerns. The above mentioned RoHS Compliance (Pb-free) component and assembly information can be obtained from your Ecliptek sales representative.