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Home Products Crystals, Oscillators, Resonators Oscillators~~VMQF576D25-98.304-1.0/-40+85~~

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VMQF576D25-98.304-1.0/-40+85 - Mercury United Electronics, Inc.

Name: Mercury United Electronics, Inc. VMQF576D25-98.304-1.0/-40+85
Brand: Mercury United Electronics, Inc.
SKU: VMQF576D25-98.304-1.0/-40+85
Price: 16.45 USD
Availability: InStock
Rating: 5 (5 reviews)

Manufacturer Part Number: VMQF576D25-98.304-1.0/-40+85

Manufacturer: Mercury United Electronics

Allelco Part Number: 98D-VMQF576D25-98.304-1.0/-40+85

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 49,265 pcs available, New & Original

Parts Description: XTAL OSC VCTCXO 98.3040MHZ LVDS

Package: 6-SMD, No Lead

Data sheet: VMQF576D25-98.3.pdf

Datasheets
MQF576, VMQF576.pdf

RoHs Status: RoHS Compliant

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Specifications

VMQF576D25-98.304-1.0/-40+85 Tech Specifications
Mercury United Electronics, Inc. - VMQF576D25-98.304-1.0/-40+85 technical specifications, attributes, parameters and parts with similar specifications to Mercury United Electronics, Inc. - VMQF576D25-98.304-1.0/-40+85

Product Attribute	Attribute Value
Manufacturer	Mercury United Electronics
Voltage - Supply	2.5V
Type	VCTCXO
Spread Spectrum Bandwidth	-
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Series	QuikXO
Ratings	-
Package / Case	6-SMD, No Lead
Package	Strip
Output	LVDS

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Height - Seated (Max)	0.102" (2.60mm)
Function	Amplitude Control
Frequency Stability	±1ppm
Frequency	98.304 MHz
Current - Supply (Max)	23mA (Typ)
Current - Supply (Disable) (Max)	18mA (Typ)
Base Resonator	Crystal
Absolute Pull Range (APR)	±8ppm

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.60.0060

Frequently Asked Questions(FAQ)

How does the VMQF576D25-98.304-1.0/-40+85 perform in terms of frequency stability across its operating temperature range, and what design implications should engineers consider when integrating it into a high-precision system?: The VMQF576D25-98.304-1.0/-40+85 delivers a frequency stability of ±1ppm over the full -40°C to 85°C temperature range, which is critical for applications requiring tight timing tolerances such as telecommunications synchronization or test instrumentation. This level of stability ensures minimal clock drift under thermal stress, reducing the need for frequent recalibration. However, designers must account for the ±8ppm Absolute Pull Range (APR), which indicates the maximum tuning capability via control voltage. While this allows some compensation for environmental variations, it also implies that external filtering or feedback mechanisms may be necessary if tighter phase noise performance is required.

What are the key differences between the VMQF576D25-98.304-1.0/-40+85 and standard fixed-frequency VCTCXOs, particularly in terms of control interface and application suitability?: Unlike fixed-frequency oscillators, the VMQF576D25-98.304-1.0/-40+85 features amplitude control functionality, enabling real-time adjustment of output signal strength via an analog input. This makes it more suitable for adaptive systems where signal integrity varies due to trace length, impedance mismatches, or EMI conditions. In contrast, standard VCTCXOs typically offer frequency tuning but not amplitude modulation. The LVDS output of this device further differentiates it from single-ended counterparts, offering better noise immunity—a crucial factor in high-speed digital designs like PCIe or Ethernet PHYs operating near 100 MHz.

Can the VMQF576D25-98.304-1.0/-40+85 be used reliably in industrial automation environments with significant electromagnetic interference, and how does its package contribute to robustness?: Yes, the VMQF576D25-98.304-1.0/-40+85 is rated for operation from -40°C to 85°C, aligning with industrial-grade requirements. Its 6-SMD, no-lead package provides good mechanical resilience and low profile (0.102" seated height), which helps minimize solder joint fatigue in vibration-prone environments. Additionally, LVDS signaling inherently rejects common-mode noise, enhancing reliability in electrically noisy settings such as motor drives or power electronics. However, proper PCB layout—including controlled impedance traces and adequate ground planes—is essential to maintain signal integrity and prevent coupling of EMI into the oscillator circuit.

How does the supply current consumption of the VMQF576D25-98.304-1.0/-40+85 impact power-sensitive embedded designs, and what trade-offs exist between performance and efficiency?: With a typical supply current of 23mA at 2.5V, the VMQF576D25-98.304-1.0/-40+85 draws moderate power compared to lower-power crystal oscillators, but remains within acceptable limits for many mid-range FPGA or SoC clocking applications. When disabled, it consumes only 18mA typ., allowing partial shutdown without complete power cycling. Engineers must weigh this against the benefit of precise frequency control and LVDS output. For battery-powered systems, alternative oscillators with lower quiescent current might be preferable unless the stability and signal quality justify the higher draw.

Is the VMQF576D25-98.304-1.0/-40+85 compatible with automated assembly processes, and what are the implications of its MSL rating for production planning?: Yes, the device is packaged in strip format and designated MSL 2, meaning it can withstand two reflow cycles with a floor life of one year under standard storage conditions. This supports typical SMT assembly workflows in surface-mount manufacturing lines. However, fabricators must adhere to JEDEC J-STD-020 guidelines for handling and baking prior to soldering to avoid moisture-related defects such as popcorning during thermal exposure.

How does the VMQF576D25-98.304-1.0/-40+85 compare to alternative clock sources like MEMS oscillators in terms of long-term drift and phase jitter?: While MEMS oscillators often claim superior shock resistance and faster startup times, the VMQF576D25-98.304-1.0/-40+85 leverages a quartz crystal resonator, which generally offers lower phase noise and superior long-term frequency stability—especially important in communication systems using spread-spectrum techniques or requiring low jitter. MEMS devices may exhibit greater aging effects over time, whereas crystal-based solutions like this VCTCXO maintain their ±1ppm stability throughout life. That said, MEMS could be favored in space-constrained or mechanically harsh applications where footprint or ruggedness outweigh spectral purity.

What considerations apply when selecting decoupling capacitors for the VMQF576D25-98.304-1.0/-40+85 to ensure stable operation under transient load conditions?: Due to its LVDS output stage and internal regulation circuitry, the VMQF576D25-98.304-1.0/-40+85 benefits from a robust local bypass network. A 0.1µF ceramic capacitor placed as close as possible to the VDD pin helps suppress high-frequency noise, while a larger bulk capacitor (e.g., 1–10µF tantalum or ceramic) on the same plane aids in maintaining voltage stability during current transients from switching loads. Care must be taken to avoid resonant frequencies between inductance and capacitance that could create impedance peaks at critical switching harmonics.

Can the VMQF576D25-98.304-1.0/-40+85 be used as a reference clock for USB 2.0 or Gigabit Ethernet PHYs, and are there any protocol-specific limitations?: Although 98.304 MHz is not a native rate for USB 2.0 (which uses 48 MHz) or Gigabit Ethernet (125 MHz), this frequency may serve as a synthesized source for PLL-based clock recovery circuits. However, the oscillator’s phase noise characteristics would directly influence jitter accumulation in the CDR loop. Given its LVDS output and low ±1ppm stability, it could support derived clocks with careful margining—but verification against PHY datasheet jitter budgets is mandatory. Using it directly without additional synthesis stages is unlikely to meet protocol specifications.

What role does the amplitude control feature play in system-level debugging or calibration routines involving the VMQF576D25-98.304-1.0/-40+85?: The analog amplitude control input allows engineers to dynamically adjust output swing without altering frequency, facilitating lab characterization of receiver sensitivity thresholds or optimizing trace lengths in prototyping phases. By sweeping the control voltage and measuring eye diagram closure or BER, designers can validate link margins before final board release. This is especially useful for LVDS interfaces where differential pair skew or termination imperfections affect effective signal levels.

How does the VMQF576D25-98.304-1.0/-40+85 align with regulatory compliance standards such as RoHS and REACH, and what documentation is typically required for certification purposes?: The device is RoHS compliant and listed as REACH unaffected, indicating absence of restricted substances like lead, cadmium, and certain phthalates. ECCN EAR99 classification suggests minimal export control restrictions under U.S. regulations. For formal compliance, manufacturers usually provide Certificates of Compliance referencing IEC 62321 (RoHS) and SVHC declaration reports. These documents are essential for OEMs seeking global market approval, particularly in EU and APAC regions with strict environmental directives.

In high-volume production runs, how does the strip packaging format of the VMQF576D25-98.304-1.0/-40+85 influence pick-and-place machine compatibility and yield management?: Strip packaging simplifies automated feeding and alignment during assembly, reducing manual intervention and improving throughput. Most modern pick-and-place systems support carrier tapes conforming to EIA-481 standards, which the VMQF576D25-98.304-1.0/-40+85 likely follows. Consistent placement accuracy enhances solder joint reliability and reduces defects related to tombstoning or misorientation. However, process engineers must validate tape peel force and component orientation to prevent damage during high-speed dispensing.

What precautions should be taken when storing or transporting the VMQF576D25-98.304-1.0/-40+85 to avoid premature degradation due to humidity or static discharge?: As an MSL 2 component, the VMQF576D25-98.304-1.0/-40+85 absorbs ambient moisture over time and must be stored in dry packaging with desiccant. Exposure beyond one year requires baking per J-STD-033 before reflow. Electrostatic discharge (ESD) sensitivity should be assessed per HBM models; although not explicitly listed, SMD oscillators often fall under Class 1B. Implementing ESD-safe handling practices—such as grounded workstations and conductive trays—is advisable during kitting and staging.

Could the VMQF576D25-98.304-1.0/-40+85 experience frequency pulling issues under extreme supply voltage fluctuations, and how does its APR help mitigate such effects?: Supply-induced frequency shifts are generally small for crystal oscillators, but rapid voltage changes can couple into the resonator through power supply impedance. The ±8ppm Absolute Pull Range of the VMQF576D25-98.304-1.0/-40+85 allows internal compensation circuitry to counteract minor deviations caused by line transients, provided the control voltage remains within specified limits. Designers should still ensure clean, regulated 2.5V delivery to avoid exceeding the oscillator’s tolerance envelope and compromising stability.

How does the physical size of the VMQF576D25-98.304-1.0/-40+85 compare to other VCTCXOs in similar frequency ranges, and what trade-offs does miniaturization introduce?: At 7.00mm x 5.00mm, the VMQF576D25-98.304-1.0/-40+85 occupies a compact footprint typical of surface-mount VCXOs. Smaller packages may sacrifice tuning range or increase susceptibility to parasitic coupling, while larger ones might offer improved thermal mass. This size strikes a balance between integration density and electrical performance, making it viable for space-constrained modules like wireless basebands or portable test equipment without significantly compromising stability or output drive capability.

Are there any known interoperability challenges when interfacing the VMQF576D25-98.304-1.0/-40+85 with legacy LVDS receivers that expect fixed threshold voltages?: LVDS receivers require consistent differential swing (typically 350mV) and common-mode voltage (around 1.25V). If the VMQF576D25-98.304-1.0/-40+85’s amplitude control alters these parameters outside receiver specs, link performance degrades. Therefore, calibration routines or fixed gain settings should lock the control voltage once optimal levels are established. Some designs incorporate resistive dividers or op-amp buffers to condition the output, ensuring compliance across all operational modes.

What diagnostic signals or monitoring capabilities are available with the VMQF576D25-98.304-1.0/-40+85 that aid in field troubleshooting or predictive maintenance?: Beyond basic enable/disable functionality, the VMQF576D25-98.304-1.0/-40+85 does not expose internal status pins such as stability flags or lock indicators. Consequently, system-level monitoring relies on indirect methods like phase detector outputs or software polling of downstream timing metrics. For critical installations, adding external frequency counters or jitter analyzers may be necessary to detect drift or instability trends over time.

How does the VMQF576D25-98.304-1.0/-40+85 behave during power-up sequencing relative to other clock generators in a multi-device system?: Like most digitally controlled oscillators, the VMQF576D25-98.304-1.0/-40+85 requires stable supply rails and settling time before producing a valid output. Without explicit power-good signaling, designers must implement sequencing constraints—ensuring this oscillator powers up after core logic but before high-speed serial links—to prevent glitches or undefined states. Failure to do so risks corrupting initialization protocols or causing brownout resets in dependent ICs.

What alternatives exist to the VMQF576D25-98.304-1.0/-40+85 if amplitude control is unnecessary but cost reduction is a priority?: For applications where variable amplitude isn’t required, fixed-output VCTCXOs or standard VCXOs without amplitude modulation offer reduced complexity and potentially lower unit cost. Devices with simpler control interfaces (e.g., single-tuned frequency inputs) may also suffice if the target frequency (98.304 MHz) is available. However, loss of dynamic signal adjustment means reliance on PCB-level impedance matching and termination schemes, increasing layout sensitivity and validation effort.

Parts with Similar Specifications

The three parts on the right have similar specifications to Mercury United Electronics, Inc. VMQF576D25-98.304-1.0/-40+85

Product Attribute
Part Number	VMQF576D25-983.040-1.0/-40+85	VMQF576D25-83.330-1.0/-40+85	VMQF576D25-90.3168-1.0/-40+85	VMQF576D25-90.000-1.0/-40+85
Manufacturer	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.
Voltage - Supply	-	-	-	-
Output	-	-	-	-
Current - Supply (Max)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Spread Spectrum Bandwidth	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Ratings	-	-	-	-
Frequency Stability	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Function	-	-	-	-
Series	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Frequency	-	-	-	-
Base Resonator	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Height - Seated (Max)	-	-	-	-
Size / Dimension	-	-	-	-
Type	-	-	-	-

VMQF576D25-98.304-1.0/-40+85 Datasheet PDF

Download VMQF576D25-98.304-1.0/-40+85 pdf datasheets and Mercury United Electronics, Inc. documentation for VMQF576D25-98.304-1.0/-40+85 - Mercury United Electronics, Inc..

Datasheets: MQF576, VMQF576.pdf

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