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Home Products Crystals, Oscillators, Resonators Oscillators~~VMQF576D25-75.000-1.0/-40+85~~

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VMQF576D25-75.000-1.0/-40+85 - Mercury United Electronics, Inc.

Manufacturer Part Number: VMQF576D25-75.000-1.0/-40+85

Manufacturer: Mercury United Electronics

Allelco Part Number: 98D-VMQF576D25-75.000-1.0/-40+85

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 41,661 pcs available, New & Original

Parts Description: XTAL OSC VCTCXO 75.0000MHZ LVDS

Package: 6-SMD, No Lead

Data sheet: VMQF576D25-75.0.pdf

Datasheets
MQF576, VMQF576.pdf

RoHs Status: RoHS Compliant

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In stock: 41661

Unit Price: $16.45
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Specifications

VMQF576D25-75.000-1.0/-40+85 Tech Specifications
Mercury United Electronics, Inc. - VMQF576D25-75.000-1.0/-40+85 technical specifications, attributes, parameters and parts with similar specifications to Mercury United Electronics, Inc. - VMQF576D25-75.000-1.0/-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	75 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)

What are the key performance characteristics of the VMQF576D25-75.000-1.0/-40+85 VCTCXO that make it suitable for high-stability clock distribution in precision instrumentation?: The VMQF576D25-75.000-1.0/-40+85 delivers exceptional frequency stability of ±1ppm over its industrial temperature range (-40°C to 85°C), which is critical for maintaining timing integrity in sensitive measurement systems. With an LVDS output and 2.5V supply voltage, it integrates well with modern low-voltage digital signal processors and FPGAs commonly used in test equipment. Its amplitude control function allows designers to fine-tune output swing levels, optimizing signal margins while minimizing power consumption—typically drawing only 23mA at full operation.

How does the VMQF576D25-75.000-1.0/-40+85 compare to standard crystal oscillators when considering long-term frequency drift and environmental sensitivity?: Unlike fundamental-mode crystal oscillators (XO) that lack tuning capability and exhibit larger aging effects, the VMQF576D25-75.000-1.0/-40+85 uses a voltage-controlled design with an absolute pull range (APR) of ±8ppm, enabling active compensation of environmental or component-induced frequency shifts. This makes it significantly more stable than basic XOs over time and temperature variations. In applications such as telecommunications baseband processing or medical imaging where sub-ppm accuracy matters, this VCTCXO’s combination of initial stability (±1ppm) and tunability provides a decisive advantage over conventional alternatives.

Can the VMQF576D25-75.000-1.0/-40+85 be used in automotive-grade systems requiring AEC-Q100 qualification?: No, the VMQF576D25-75.000-1.0/-40+85 does not meet automotive reliability standards such as AEC-Q100. It is rated for industrial temperatures only (-40°C to +85°C) and lacks the enhanced stress testing, process controls, and failure mode analysis required for automotive environments. While its performance is robust within industrial specifications, designers targeting automotive, aerospace, or mission-critical systems must select alternative components specifically qualified under those standards.

What impact does the Moisture Sensitivity Level (MSL) rating of 2 have on PCB assembly handling of the VMQF576D25-75.000-1.0/-40+85?: An MSL of 2 indicates that the VMQF576D25-75.000-1.0/-40+85 requires limited moisture protection during reflow soldering. Specifically, it can be exposed to ambient conditions for up to one year after opening the moisture barrier packaging before baking becomes necessary. This simplifies storage logistics compared to higher-level parts but still mandates adherence to IPC/JEDEC guidelines during manufacturing—particularly avoiding uncontrolled exposure beyond 30°C/60% RH for extended periods prior to assembly.

How should supply current management be considered when integrating the VMQF576D25-75.000-1.0/-40+85 into a power-sensitive embedded system?: With typical operating current draw of 23mA and disable state current of 18mA, the VMQF576D25-75.000-1.0/-40+85 consumes moderate power relative to other VCTCXOs. However, in battery-powered applications, even small reductions in oscillator quiescent current can extend runtime significantly. Designers may leverage the disable pin to shut down unnecessary clocking paths, reducing average current by nearly 100%. Additionally, since LVDS outputs are differential and low-swing, interfacing logic typically requires fewer termination resistors or buffering stages, indirectly lowering total system current.

In what scenarios would the amplitude control feature of the VMQF576D25-75.000-1.0/-40+85 provide tangible benefits over fixed-output oscillators?: Amplitude control enables dynamic adjustment of the LVDS output swing, which is valuable when driving transmission lines over varying distances or when sharing a common bus among multiple devices with different receiver thresholds. For example, in multi-drop backplanes or long PCB traces, reducing drive strength can minimize reflections and electromagnetic interference (EMI), improving signal integrity without sacrificing data rates. This flexibility reduces the need for external level-shifting circuitry and supports adaptive impedance matching strategies in complex layouts.

How does the physical footprint of the VMQF576D25-75.000-1.0/-40+85 influence placement decisions in compact PCB designs?: Measuring 7.00mm x 5.00mm in a surface-mount 6-pin configuration without leads, the VMQF576D25-75.000-1.0/-40+85 occupies a relatively small area but requires careful routing due to its narrow pitch. Its height of 2.60mm max limits stacking options in ultra-thin modules. When placed near high-speed digital components like FPGAs or transceivers, decoupling capacitors should be located within 5mm to maintain clean supply rails, and ground planes should remain unbroken beneath the device to preserve phase noise performance and reduce jitter.

What considerations apply when selecting bypass capacitors for the VMQF576D25-75.000-1.0/-40+85 to ensure optimal noise immunity?: Due to its 2.5V supply and moderate current demand, local bypassing with a 0.1µF ceramic capacitor placed as close as possible to the VDD and GND pins is essential. Given the device’s sensitivity to supply noise—especially given its sub-ppm stability—a second smaller capacitor (e.g., 1nF) may help filter high-frequency transients. Avoid placing vias near the oscillator unless necessary, as inductance from long traces can degrade power integrity. Use solid ground return paths directly connected to a low-impedance plane beneath the package.

Does the absence of spread spectrum modulation in the VMQF576D25-75.000-1.0/-40+85 affect EMI compliance in communication systems?: Yes, the VMQF576D25-75.000-1.0/-40+85 lacks spread spectrum capability, meaning its 75MHz output has energy concentrated at a single frequency. This increases the risk of radiated emissions exceeding regulatory limits near harmonic frequencies, especially if layout parasitics create unintended antennas. In EMC-sensitive environments (e.g., industrial Ethernet or medical devices), supplemental filtering or careful PCB shielding may be required. Alternatively, pairing it with spread-spectrum-capable ICs upstream can mitigate downstream emission issues.

How reliable is the VMQF576D25-75.000-1.0/-40+85 over its specified lifetime, and what failure modes should designers anticipate?: While Mercury United Electronics provides no explicit MTBF data, industrial-grade VCTCXOs like the VMQF576D25-75.000-1.0/-40+85 typically exhibit high reliability under proper use. Primary failure mechanisms include crystal fatigue, solder joint cracking due to thermal cycling, or degradation of internal tuning elements over time. To enhance robustness, avoid exceeding the maximum control voltage range, ensure mechanical isolation from vibration sources, and follow recommended land pattern dimensions per IPC-7351. Regular in-circuit monitoring of frequency drift can serve as an early warning indicator.

Is it feasible to replace the VMQF576D25-75.000-1.0/-40+85 with a lower-cost OCXO or DCO in a phase-locked loop application?: Generally not advisable. Although OCXOs offer better stability, they consume far more power (often hundreds of milliamps), making them impractical for space-constrained or low-power designs. Direct-digital synthesizers (DCOs) eliminate crystals entirely but introduce quantization noise and require extensive calibration, potentially degrading overall PLL phase noise. The VMQF576D25-75.000-1.0/-40+85 strikes a balance between size, power, and stability, offering sufficient performance for many high-speed serial interfaces without the complexity or cost of ovenized or digitally controlled solutions.

What role does the QuikXO series platform play in the interchangeability and support lifecycle of the VMQF576D25-75.000-1.0/-40+85?: As part of the QuikXO series, the VMQF576D25-75.000-1.0/-40+85 benefits from standardized mechanical and electrical interfaces across the product family. This enables drop-in replacements for similar models with minor firmware adjustments, streamlining design reuse and inventory management. Manufacturers often provide cross-reference tools and parametric search capabilities within the series, reducing sourcing lead times. However, users must verify all electrical parameters—including enable pin behavior and control voltage ranges—as slight variations exist between individual part numbers despite shared architecture.

How does the LVDS output format of the VMQF576D25-75.000-1.0/-40+85 interface with CMOS inputs without compromising signal quality?: LVDS outputs are designed to drive differential pairs; connecting them directly to CMOS inputs risks undefined logic states due to single-ended thresholds. Instead, either use a dedicated LVDS-to-CMOS translator IC or configure the receiving device’s input buffers accordingly. Alternatively, some FPGAs support LVCMOS-compatible LVDS receivers that accept single-ended signals with appropriate termination. Always include a 100Ω differential termination resistor near the source to prevent reflections, even if unused at the destination, as improper impedance matching degrades eye diagrams and increases jitter.

What documentation or characterization data should engineers request when qualifying the VMQF576D25-75.000-1.0/-40+85 for a safety-critical application?: Beyond the datasheet, request detailed test reports covering frequency vs. control voltage curves, startup transient behavior, phase noise profiles (integrated from 1kHz to 1MHz offset), and aging projections over 5–10 years. Also seek thermal derating information, shock/vibration test results, and failure analysis summaries. Since this device is RoHS compliant and REACH unaffected, chemical composition is less concerning, but traceability to lot-specific performance batches is crucial for consistent production yields in mass deployment scenarios.

Why might a designer choose a VCTCXO over a simple TCXO despite higher cost and complexity?: The VMQF576D25-75.000-1.0/-40+85 provides active frequency trimming via analog control voltage, which allows real-time correction for manufacturing tolerances, aging, or environmental drift. Standard TCXOs compensate passively using temperature-compensated crystals but lack tunability post-fabrication. In systems requiring precise frequency agility—such as software-defined radios or adaptive clocking protocols—the ability to adjust frequency within ±8ppm using the amplitude control input offers operational resilience that pure TCXOs cannot match, justifying the added cost in performance-critical roles.

How does the strip packaging format affect automated handling and yield in high-volume manufacturing environments?: Strip packaging facilitates tape-and-reel feeding compatible with standard pick-and-place machines, enabling efficient SMT assembly. However, the VMQF576D25-75.000-1.0/-40+85’s 6-pin gull-wing footprint requires precise nozzle alignment to avoid misplacement. Tape width and carrier compatibility must match the host machine’s feeder specifications to prevent jamming. While this format supports high-speed production, inspection systems must be calibrated to detect tombstoning or skew, particularly given the part’s relatively large pad area relative to body size.

What precautions are necessary when storing or transporting the VMQF576D25-75.000-1.0/-40+85 to prevent latent damage?: Store in original sealed packaging at ≤30°C and ≤60% RH to comply with MSL 2 requirements. Avoid rapid thermal excursions during shipping; sudden temperature changes can induce microcracks in the crystal or bond wires. Handle manually or with ESD-safe tooling, as the exposed leads are vulnerable to static discharge despite not being internally grounded. If stored beyond one year post-opening, bake at 125°C for 24 hours before reflow to remove absorbed moisture.

How does the frequency tolerance specification interact with the ±1ppm stability in determining usable accuracy over time?: The ±1ppm stability governs short-term and temperature-induced variations, while the initial frequency tolerance (implied by the "-1.0" suffix) defines how close the part starts to the nominal 75MHz value. These parameters combine multiplicatively: worst-case deviation equals initial tolerance plus accumulated drift over time and temperature. For instance, a part starting at -1.0ppm with ±1ppm stability could vary by up to ±2.0ppm in extreme conditions. Accurate system timing budgets must account for both terms to meet end-application phase or frequency error limits.

Parts with Similar Specifications

The three parts on the right have similar specifications to Mercury United Electronics, Inc. VMQF576D25-75.000-1.0/-40+85

Product Attribute
Part Number	VMQF576D25-85.000-1.0/-40+85	VMQF576D25-70.000-1.0/-40+85	VMQF576D25-864.000-1.0/-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.
Current - Supply (Disable) (Max)	-	-	-	-
Type	-	-	-	-
Frequency Stability	-	-	-	-
Size / Dimension	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Function	-	-	-	-
Height - Seated (Max)	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Base Resonator	-	-	-	-
Ratings	-	-	-	-
Voltage - Supply	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Series	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Current - Supply (Max)	-	-	-	-
Frequency	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Output	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-

VMQF576D25-75.000-1.0/-40+85 Datasheet PDF

Download VMQF576D25-75.000-1.0/-40+85 pdf datasheets and Mercury United Electronics, Inc. documentation for VMQF576D25-75.000-1.0/-40+85 - Mercury United Electronics, Inc..

Datasheets: MQF576, VMQF576.pdf

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Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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