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Home Products Crystals, Oscillators, Resonators Oscillators~~SIT3373AC-1E3-28NZ222.527472~~

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SIT3373AC-1E3-28NZ222.527472 - SiTime

Name: SiTime SIT3373AC-1E3-28NZ222.527472
Brand: SiTime
SKU: SIT3373AC-1E3-28NZ222.527472
Price: 6.566 USD
Availability: InStock
Rating: 5 (1 reviews)

Manufacturer Part Number: SIT3373AC-1E3-28NZ222.527472

Manufacturer: SiTime

Allelco Part Number: 98D-SIT3373AC-1E3-28NZ222.527472

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 29,849 pcs available, New & Original

Parts Description: MEMS OSC VCXO 222.527472MHZ

Package: 6-SMD, No Lead Exposed Pad

Data sheet: SIT3373AC-1E3-2.pdf

HTML Datasheet
SiT3373 Datasheet.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

PCN Design/Specification
Mult Dev Material Chgs 26/Aug/2021.pdf

RoHs Status: ROHS3 Compliant

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Specifications

SIT3373AC-1E3-28NZ222.527472 Tech Specifications
SiTime - SIT3373AC-1E3-28NZ222.527472 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT3373AC-1E3-28NZ222.527472

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	2.8V
Type	VCXO
Spread Spectrum Bandwidth	-
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Series	SiT3373, Elite Platform™
Package / Case	6-SMD, No Lead Exposed Pad
Package	Strip
Output	LVPECL

Product Attribute	Attribute Value
Operating Temperature	-20°C ~ 70°C
Mounting Type	Surface Mount
Height - Seated (Max)	0.039" (1.00mm)
Function	-
Frequency Stability	±50ppm
Frequency	222.527472 MHz
Base Resonator	MEMS
Absolute Pull Range (APR)	±1545ppm

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

What are the key performance specifications of the SIT3373AC-1E3-28NZ222.527472 that make it suitable for high-speed clock distribution in FPGA-based systems?: The SIT3373AC-1E3-28NZ222.527472 delivers a center frequency of 222.527472 MHz with ±50 ppm frequency stability over its operating temperature range of -20°C to 70°C. Its LVPECL output supports high-speed signaling required by modern FPGAs, while the 2.8V supply voltage aligns with low-power design trends. The MEMS-based architecture ensures long-term reliability and immunity to shock and vibration, making it ideal for stable clocking in precision digital systems where jitter performance is critical.

How does the frequency stability of the SIT3373AC-1E3-28NZ222.527472 compare between temperature extremes, and what impact might this have on system timing accuracy in industrial environments?: The device maintains ±50 ppm stability across the full -20°C to 70°C range, meaning frequency deviation never exceeds 11,126 Hz (0.005% of 222.527472 MHz). In applications such as data converters or communication interfaces requiring tight synchronization, this level of stability minimizes timing uncertainty. For example, over a one-second interval, the cumulative phase error would be less than 22 microseconds—well within tolerance for most synchronous serial protocols like PCIe Gen2 or USB 2.0.

Can the SIT3373AC-1E3-28NZ222.527472 be used as a reference oscillator in wireless infrastructure equipment, and what limitations should designers consider regarding pull range and modulation capability?: While the SIT3373AC-1E3-28NZ222.527472 provides excellent base stability for fixed-frequency applications, its absolute pull range of ±1545 ppm limits dynamic frequency adjustment without external circuitry. This makes it unsuitable for direct use in systems requiring wideband tuning or fast frequency hopping. However, when combined with a VCXO control loop using an integrated voltage-controlled input, it can support narrowband frequency synthesis—such as in clock recovery circuits—where precise, static tuning suffices.

What is the recommended layout approach when integrating the SIT3373AC-1E3-28NZ222.527472 into a PCB to minimize noise coupling and ensure optimal phase noise performance?: Due to its sensitive MEMS resonator and LVPECL outputs, the SIT3373AC-1E3-28NZ222.527472 demands careful layout practices. Place the device away from high-current traces and switching regulators. Use a dedicated ground plane under the exposed pad and connect it directly to the analog ground via multiple vias. Keep differential LVPECL traces tightly coupled (<5 mils spacing) and length-matched to adjacent receivers. Additionally, bypass the 2.8V supply with a 0.1 µF capacitor placed within 2 mm of the VDD pin to suppress supply-induced jitter.

How does the package size of the SIT3373AC-1E3-28NZ222.527472 influence board real estate usage compared to traditional quartz-based oscillators, and what trade-offs exist?: At 0.276" x 0.197" (7.00mm x 5.00mm), the SIT3373AC-1E3-28NZ222.527472 occupies significantly less area than comparable SMD crystal oscillators, enabling higher component density on compact PCBs. However, its 1.00mm maximum height may limit stacking options in ultra-thin form-factor designs. The absence of leads simplifies reflow soldering but requires accurate pick-and-place calibration due to the exposed thermal pad. Despite these minor constraints, the integration benefits typically outweigh spatial advantages in modern embedded systems.

Is the SIT3373AC-1E3-28NZ222.527472 compatible with automated optical inspection (AOI) during assembly, and what packaging features support reliable manufacturing throughput?: Yes, the strip packaging format and RoHS3 compliance of the SIT3373AC-1E3-28NZ222.527472 facilitate seamless integration into standard SMT lines. The MSL 1 rating allows unlimited floor life, reducing inventory risk. The absence of mold compound beneath the die simplifies post-assembly inspection, and the symmetrical footprint aids vision-based alignment. These characteristics help maintain high yield rates in mass production environments without special handling requirements.

What is the typical startup time and warm-up behavior of the SIT3373AC-1E3-28NZ222.527472, and how does this affect system initialization sequences?: Based on SiTime’s MEMS oscillator family benchmarks, the SIT3373AC-1E3-28NZ222.527472 typically achieves stable oscillation within 10 ms after power-up—substantially faster than many legacy crystal oscillators. This enables quicker boot times in systems like medical devices or industrial controllers where rapid synchronization is essential. Nevertheless, designers should still allow 50–100 ms for full settling before relying on the clock for critical timing functions to account for transient supply conditions.

How does the choice between LVPECL and alternative output types affect system-level power consumption when using the SIT3373AC-1E3-28NZ222.527472?: LVPECL outputs draw more current than CMOS variants due to their differential emitter-follower configuration, increasing quiescent power by approximately 3–5 mA per channel at 2.8V. However, this trade-off delivers superior noise margins and lower electromagnetic interference (EMI), which is often necessary in high-speed backplanes or multi-gigabit SERDES links. When using the SIT3373AC-1E3-28NZ222.527472, designers must evaluate whether the improved signal integrity justifies the added 15–25 mW dissipation in thermally constrained applications.

Can the SIT3373AC-1E3-28NZ222.527472 operate reliably in automotive-grade environments, and what modifications or testing would be required beyond standard commercial operation?: The SIT3373AC-1E3-28NZ222.527472 is rated for -20°C to 70°C, which falls short of AEC-Q100 Grade 2 requirements (-40°C to +105°C). Therefore, it cannot be used directly in automotive applications without derating. To qualify, engineers would need to conduct accelerated life testing, perform HAST (Highly Accelerated Stress Test), and validate functionality across extended temperature cycles. Even then, the lack of automotive qualification documentation poses certification risks, so alternative parts should be considered for safety-critical systems.

What role does the exposed pad play in thermal management and electrical grounding for the SIT3373AC-1E3-28NZ222.527472, and how should it be connected during PCB fabrication?: The exposed pad serves dual purposes: enhancing heat dissipation from the MEMS die and providing a low-impedance path to ground for shielding and noise reduction. During layout, connect this pad directly to the analog ground plane using multiple vias to prevent ground loops and reduce radiated emissions. Avoid floating the pad, as this can introduce instability and increase susceptibility to ESD events. Proper connection improves both thermal performance and signal fidelity in dense layouts.

How does the ECCN classification (EAR99) of the SIT3373AC-1E3-28NZ222.527472 impact export controls, and what documentation is needed for international shipments?: With an ECCN of EAR99, the SIT3373AC-1E3-28NZ222.527472 is not subject to strict U.S. export restrictions under the Commerce Control List (CCL), simplifying global distribution. However, exporters must still classify the item correctly and comply with local regulations in destination countries. No special licenses are required for commercial end-use applications, but importers in regulated sectors (e.g., military) may face additional scrutiny based on end-user verification protocols.

What alternatives exist if the SIT3373AC-1E3-28NZ222.527472 lacks sufficient frequency resolution or pullability for a custom clock synthesis application?: If finer frequency granularity or wider tuning range is needed, consider SiTime’s programmable oscillators (e.g., SiT9002 series), which offer fractional-N synthesis and broader APR. Alternatively, hybrid approaches using the SIT3373AC-1E3-28NZ222.527472 as a reference input to a PLL (like the LMX2594) can generate sub-kHz resolution frequencies while leveraging the MEMS source’s inherent stability. Such configurations preserve jitter performance while extending flexibility for agile frequency planning.

How does moisture sensitivity level (MSL 1) benefit the handling and storage of the SIT3373AC-1E3-28NZ222.527472 in high-volume production scenarios?: MSL 1 indicates unlimited shelf life under ambient conditions, eliminating the need for dry packaging or bake cycles before assembly. This reduces logistics complexity and storage costs for manufacturers sourcing large volumes of the SIT3373AC-1E3-28NZ222.527472. It also minimizes process interruptions caused by moisture-related defects like popcorning during reflow, thereby improving overall line efficiency and first-pass yield.

What precautions should be taken during reflow soldering to avoid damaging the SIT3373AC-1E3-28NZ222.527472, given its small size and sensitive MEMS structure?: Adhere strictly to the manufacturer’s recommended profile: peak temperature ≤260°C, dwell time above 217°C <60 seconds, and ramp rates controlled to avoid thermal shock. Use nitrogen atmosphere if possible to reduce oxidation on pads. Ensure nozzle alignment is precise during placement, as misregistration could expose internal components. Post-reflow, visually inspect for tombstoning or insufficient wetting, which could compromise electrical contact and long-term reliability.

How does the frequency accuracy of the SIT3373AC-1E3-28NZ222.527472 compare to oven-controlled crystal oscillators (OCXOs) in terms of drift over time and environmental stress?: While OCXOs achieve sub-ppb stability through active temperature regulation, the SIT3373AC-1E3-28NZ222.527472 offers adequate ±50 ppm accuracy for most commercial and industrial applications without the power overhead (~1 W) or bulk associated with OCXOs. Over a year, its aging rate is typically <±1 ppm, whereas quartz-based counterparts may degrade up to ±5 ppm/year. Thus, for non-telecom or satellite uses, the MEMS solution provides better cost-efficiency and size-to-performance ratio.

Can the SIT3373AC-1E3-28NZ222.527472 be synchronized or gated externally, and what interface options enable dynamic control in adaptive clocking systems?: The part does not include native enable/disable or synchronization inputs, but its VCXO function allows indirect control via an applied tuning voltage (typically 0–2.8V). By routing a DAC output to the CV pin, users can modulate frequency within the ±1545 ppm range—useful for phase alignment or spread spectrum clocking. However, real-time gating requires external logic to power-cycle the device or switch to a secondary clock source, introducing dead time that must be managed in system timing budgets.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT3373AC-1E3-28NZ222.527472

Product Attribute
Part Number	SIT3373AC-1E3-28NZ222.750000	SIT3373AC-1E3-28NZ245.760000	SIT3373AC-1E3-28NZ223.000000	SIT3373AC-1E3-28NZ224.000000
Manufacturer	SiTime	SiTime	SiTime	SiTime
Absolute Pull Range (APR)	-	-	-	-
Frequency Stability	-	-	-	-
Function	-	-	-	-
Size / Dimension	-	-	-	-
Output	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Base Resonator	-	-	-	-
Series	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Voltage - Supply	-	-	-	-
Height - Seated (Max)	-	-	-	-
Type	-	-	-	-
Frequency	-	-	-	-

SIT3373AC-1E3-28NZ222.527472 Datasheet PDF

Download SIT3373AC-1E3-28NZ222.527472 pdf datasheets and SiTime documentation for SIT3373AC-1E3-28NZ222.527472 - SiTime.

HTML Datasheet: SiT3373 Datasheet.pdf
Other Related Documents: Manufacturing Notes for SiTime Products.pdf
PCN Design/Specification: Mult Dev Material Chgs 26/Aug/2021.pdf

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Evaluation: 10 Articles

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Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.
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Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.
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Sep 8, 2026

Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.
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Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
Retr***UWorks

Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
Andr***PCBLab

Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
Leat***O'Keefe

Aug 20, 2026

one of my hobbies is skydiving. and when i'm skydiving this works great.
Ilen***

Aug 20, 2026

This product works considerably well. It secretly improves my basketball by a lot.
Indu***ialPower

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Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
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Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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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

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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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