Tech Talk

The EMO™ family of oscillators are simply oscillators where the output frequency is primarily controlled by an internal MEMS (microelectromechanical system) resonator and an integrated programmable CMOS oscillator circuit. Utilizing a proprietary MEMS resonator design and an exclusive programming method, the EMO™ family of oscillators are programmed to a specified frequency prior to shipment to the customer.

These series of oscillators are commonly used in the following customer products:

• Still Camera
• Notebook Computers
• Video Cameras
• Portable Media Players
• Computer Peripherals

The EMO™ family of oscillators can be used by any customer who is currently using our standard fixed frequency quartz based oscillator products. However, it is recommended that the customer obtain the applicable specifications from our web site and compare all electrical and mechanical parameters of each series.

The EMO™ family of oscillators have very short lead times with cost effective pricing. Oscillator samples can be shipped in as little as 1 day. Additionally, there are no minimum order quantities on any of the EMO™ products.

These series of MEMS oscillators offer:

• Improved frequency stability through the use of a MEMS resonator
• Output frequencies up to 125MHz
• Supply voltages of 1.8VDC, 2.5VDC, or 3.3VDC
• ±50ppm maximum over industrial temperature ranges
• Tight duty cycle of 50% ±5%
• 30,000 G Shock Resistance
• Superior period jitter performance
• Tri-state (High Impedance) or Power Down (Logic Low) output options
• Four low profile plastic MSL1 rated SMD packages
• RoHS Compliant (Pb-free) with high temperature 260°C reflow capability

The EMO™ family features frequencies ranging from 1.000MHz to 125.000MHz. Any frequency in this range can be ordered, with up to six significant digits (i.e. 100.123456MHz).

These oscillators are offered in the four industry standard plastic SMD packages. The package dimensions for each product series can be found on the applicable specification sheet.

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

These series offer operation at 3.3V_DC ±10%, 2.5V_DC ±5%, or 1.8V_DC ±5%.

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

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

Ecliptek offers ±50ppm and ±100ppm frequency stability options for these product series. Both frequency stability options apply to a -40°C to +85°C operating temperature range.

The EMO™ oscillator contains programmable power down and tri- state/output enable options for power management.

If the power down function is selected, then all active circuitry within the oscillator is shut down when the voltage at the control pad (pad 1) is set to a logic low state. In this condition, the output signal is forced to a logic low and the input current on the power supply line is negligible (less than 50µA).

If the tri-state/output enable option is selected, the output is three-stated (tri- state) when the voltage at the control pad (pad 1) is set to a logic low state. In this condition, the oscillator and PLL continue to operate. However, the output signal is now high impedance and the input current on the power supply line is only slightly decreased from normal operating current.

Because Ecliptek uses a 2 wire 4 pin programming interface, this family of products does not offer a no connect option for pad 1. Only the power down and tri-state/output enable options are available. However, the customer can use the EMO™ oscillator as a non-tri-state oscillator by setting the voltage on pad 1 to either no connect or logic high. The oscillator has an internal pull up resistor on pad 1.

Ecliptek offers a frequency stability of ±50ppm over an operating temperature range of -40°C to +85°C. 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:

• Calibration Tolerance at 25°C
• Frequency Stability over Operating Temperature Range
• Supply Voltage
• Output Load
• First Year Aging at 25°C
• 260°C Reflow
• Shock
• Vibration

Aging is the systematic change in frequency with time due to internal changes in the MEMS resonator 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 oscillator aging: adsorption and desorption of contamination on the surfaces of the MEMS resonator, 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 ±1ppm over the first year, logarithmically declining each year there after.

Jitter is the measure in the time domain and is typically specified in picoseconds (pSec) as a maximum peak to peak value. Ecliptek uses a proprietary CMOS oscillator design, exclusive processing methods, and a unique output driver circuit enabling these oscillator series to have exceptionally low period jitter. The peak to peak period jitter parameters can be found on the applicable specifications sheets.

In certain cases, jitter may be higher than the Ecliptek standard fixed frequency products. It is recommended that customers review the applicable specifications from our web site and compare the jitter specification at the specific frequency of operation and input voltage condition. In conjunction with using a proprietary CMOS oscillator design and exclusive programming methods, Ecliptek has implemented controlled rise and fall times, unique output driver circuitry, and innovative circuit layout techniques enabling the EMO™ oscillator to have low period jitter.

Tight duty cycle (45% minimum, 55% maximum) is standard for these product series and is measured at 50% of the output waveform amplitude.

Ecliptek offers this oscillator product series with a low voltage HCMOS 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 is driving a high impedance-low capacitance input.

These series of oscillators have a high speed CMOS output driver that enables the output signal to swing from ground to V_DD. Ecliptek offers these series with a 15pF HCMOS output load. If a customer requires a different load from that specified on the datasheet, please contact Ecliptek with your custom requirements.

Start-up time for these series can be found on the applicable datasheet and is defined as the time from when the power supply reaches its specified value to the time the oscillator output signal amplitude reaches its minimum voltage output logic high threshold (V_OH) and the output is within the specified frequency tolerance. For the EMO™ Series, characterization test data indicates that the start-up time is typically around 6 to 7mS (within ±100ppm).

Note: In order to ensure proper start-up, the power supply start-up should have an exponential curve typical of a capacitive charge or a linear voltage ramp and not exceed 300mS. If you have a special voltage start-up profile (i.e. odd ramp steps or shapes), please contact Ecliptek to discuss possible oscillator performance issues.

Yes! You should add both the EMO™ Series oscillator and the standard fixed frequency Ecliptek product to your AVL in order to obtain greater cost economies and schedule flexibility. Below is a cross matrix listing EMO™ products and standard fixed frequency products.

Package Dimensions	Supply Voltage	EMO™ Series	Crystal Oscillator Series
2.5 x 3.2	3.3V	EMK33	EB13E2
2.5 x 3.2	2.5V	EMK32	EB15E2
2.5 x 3.2	1.8V	EMK32	EB16E2
3.2 x 5	3.3V	EMK23	EC36
3.2 x 5	2.5V	EMK22	EC37
3.2 x 5	1.8V	EMK21	EC39
5 x 7	3.3V	EMK13	EC26
5 x 7	2.5V	EMK12	EC27
5 x 7	1.8V	EMK11	EC29

It is recommended that the customer use the test fixture specified by Ecliptek. This information is available in "Other Resources" section on the applicable series specification datasheet.

If the part number is specified with the TR option (tape and reel packaging), these oscillators are delivered to the customer in EIA481A compliant tape and reel packaging. Without the TR option, these products are delivered to the customer in bulk packaging (ESD protective bag). See the applicable specification for the tape and reel packaging dimensions and suggested solder reflow diagrams. These product series are capable of withstanding industry standard high temperature (260°C, 10 seconds) convection reflow processes and are rated MSL1 per J-STD-020.

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 applicable specification data sheet.

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

Ecliptek can provide 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 customer should layout their PCB to include proper connections for the tri-state input function. See the applicable series recommended solder pad dimensions for details.

The pad is labeled ‘A’ and is defined as a ‘No Connect’. This pad has no electrical function and has been added for mechanical manufacturing reasons.

It means that this 'pad A' is isolated, not electrically connected to any of the other four pads and it is not electrically connected to any part of the internal circuitry.

Connecting this 'pad A' to Ground or V_DD will have no electrical impact on this part. This pad is stand-alone, isolated from all other pads, including Ground or V_DD. Ecliptek engineering recommends not connecting 'pad A' to Ground or V_DD.

Please see the Ecliptek Competitor Part Number Crosser.

Obtaining a quote 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. This part number will define the specifications you desire. After you construct a part number, you can request a quote or check stock by following the prompts on our website. You can go to a part number constructor now by selecting a link below:

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

You can go to the specific series you desire now by selecting a link below. At the bottom of the page under Other Resources, select Download Specification or click on the Adobe PDF icon in the top right hand corner of the page.

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

Simply fill in the required information in the part number constructor for the specific series that you would like to order. This part number will define the specifications you desire. After you construct a part number, you will be prompted with the following: Get a data sheet for this part number (PDF). You can jump to a part number constructor using the table below:

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

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

Complete the Ecliptek Custom Oscillator Request Form 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 each product series are listed on the applicable specifications.

Failure in Time (FIT) and Mean Time To Failure (MTTF) reliability data is available on the Ecliptek website. You can find the data on our Qualification and Reliability page in the Tools and Resources section of our website. You can also find qualification and reliability data for most of our series specifications at the bottom of each specifications web page under the "Other Resources" section.

θ_JA and θ_JA values are available for these product series. Please see the Oscillator Thermal Resistance FAQ for complete details.

IBIS modeling information is available and can be found in the table below.

Supply Voltage (VDC)	Package Dimensions (all dimensions in millimeters)
	5 x 7	3.2 x 5	2.5 x 3.2	2 x 2.5
1.8	EMK11	EMK21	EMK31	EMK41
2.5	EMK12	EMK22	EMK32	EMK42
3.3	EMK13	EMK23	EMK33	EMK43

As shown on the applicable datasheet, this series of product has marking content on the top of the part. This marking consists of a pad one (1) locator dot and a four digit alpha numeric. These digits represent an Ecliptek manufacturing designator. This designator is used internally at Ecliptek for manufacturing lot traceability. This manufacturing designator provides no indication of part number or date code or output frequency.