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Home Products Crystals, Oscillators, Resonators Oscillators~~SIT9120AI-2D3-25E166.600000~~

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SIT9120AI-2D3-25E166.600000 - SiTime

Name: SiTime SIT9120AI-2D3-25E166.600000
Brand: SiTime
SKU: SIT9120AI-2D3-25E166.600000
Price: 2.835 USD
Availability: InStock
Rating: 5 (6 reviews)

Manufacturer Part Number: SIT9120AI-2D3-25E166.600000

Manufacturer: SiTime

Allelco Part Number: 98D-SIT9120AI-2D3-25E166.600000

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 45,804 pcs available, New & Original

Parts Description: MEMS OSC XO 166.6000MHZ LVDS SMD

Package: 6-SMD, No Lead

Data sheet: SIT9120AI-2D3-2.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

RoHs Status: ROHS3 Compliant

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In stock: 45804

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Quantity	Unit Price	Ext. Price
1+	$2.835	$2.84

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Specifications

SIT9120AI-2D3-25E166.600000 Tech Specifications
SiTime - SIT9120AI-2D3-25E166.600000 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT9120AI-2D3-25E166.600000

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	2.5V
Type	XO (Standard)
Spread Spectrum Bandwidth	-
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Series	SiT9120
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)	0.039" (1.00mm)
Function	Enable/Disable
Frequency Stability	±50ppm
Frequency	166.6 MHz
Current - Supply (Max)	55mA
Base Resonator	MEMS
Absolute Pull Range (APR)	-

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 electrical characteristics of the SIT9120AI-2D3-25E166.600000 MEMS oscillator that make it suitable for high-speed digital systems?: The SIT9120AI-2D3-25E166.600000 operates at a nominal frequency of 166.6 MHz with LVDS output, which is ideal for minimizing electromagnetic interference in high-speed serial interfaces such as Gigabit Ethernet or PCIe Gen2 applications. Its supply voltage requirement of 2.5V aligns well with modern low-voltage logic families, enabling integration into power-sensitive designs without requiring level translation. The maximum supply current draw is limited to 55mA under full load, contributing to efficient power management in battery-powered or thermally constrained environments.

How does the ±50ppm frequency stability specification of the SIT9120AI-2D3-25E166.600000 compare to alternative timing solutions like crystal oscillators when operating across industrial temperature ranges?: Across the -40°C to 85°C operating range specified for the SIT9120AI-2D3-25E166.600000, the ±50ppm stability ensures that clock drift remains within tight bounds even under thermal stress—this exceeds typical performance requirements for most digital communication protocols beyond basic UART and SPI links. In contrast, many conventional crystal oscillators exhibit stabilities closer to ±100ppm over the same temperature span unless they use oven-controlled designs, which increase size, cost, and power consumption. This makes the SiTime device particularly advantageous in space-constrained embedded systems where environmental control is impractical.

Can the SIT9120AI-2D3-25E166.600000 be used as a replacement for a standard 3.3V LVPECL oscillator in existing PCB layouts?: While both devices provide differential signaling suitable for high-speed backplanes, direct substitution is not recommended due to voltage incompatibility. The SIT9120AI-2D3-25E166.600000 requires only 2.5V supply versus the typical 3.3V needed by LVPECL parts, necessitating careful review of power rail availability and termination network compatibility. Additionally, LVPECL generally offers higher swing voltages than LVDS, so signal integrity must be verified through simulation if interfacing to legacy receivers designed for LVPECL levels.

What design considerations should engineers evaluate before integrating the SIT9120AI-2D3-25E166.600000 into a system with strict jitter requirements?: Engineers must assess phase noise performance relative to application tolerances, though the datasheet does not publish explicit values; however, SiTime's MEMS technology typically delivers better short-term jitter than comparable quartz-based alternatives at similar frequencies. Layout sensitivity is also critical: due to its small 7.0mm x 5.0mm footprint, proper grounding under the package and minimal trace lengths to the load are essential to maintain signal integrity. Decoupling capacitors near the VDD pin should be placed within 2–3 mm to minimize impedance at 166.6 MHz.

How does the enable/disable function on the SIT9120AI-2D3-25E166.600000 affect power sequencing in multi-clock domain systems?: The OE (output enable) pin allows software-controlled shutdown of the oscillator output, reducing dynamic power during idle periods by cutting current from up to 55mA to near zero. However, designers must ensure that all downstream logic dependent on this clock remains stable during disable events—especially in asynchronous domains—to prevent metastability or undefined states. Proper reset sequencing or gating may still be required depending on system architecture.

Is the SIT9120AI-2D3-25E166.600000 suitable for automotive-grade applications given its stated operating temperature range?: The SIT9120AI-2D3-25E166.600000 is rated only from -40°C to 85°C, which falls short of typical AEC-Q100 Grade 2 (up to 105°C) or Grade 1 (up to 125°C) requirements for automotive electronics. Therefore, it is generally restricted to non-automotive consumer or industrial applications unless additional thermal derating is acceptable and regulatory certification can be waived based on system-level validation.

How does the MSL rating of 1 for the SIT9120AI-2D3-25E166.600000 impact handling procedures during assembly?: With an MSL rating of 1, the SIT9120AI-2D3-25E166.600000 can be stored indefinitely at ambient conditions without special moisture protection measures prior to reflow soldering. This simplifies inventory management and reduces packaging costs compared to components rated MSL 3 or higher, making it attractive for high-volume production runs where shelf life and handling logistics are critical concerns.

What are the implications of selecting the SIT9120AI-2D3-25E166.600000 instead of a programmable oscillator for a fixed-frequency timing solution?: Choosing the SIT9120AI-2D3-25E166.600000 eliminates the need for configuration hardware and firmware overhead associated with digitally controlled oscillators (DCOs). It provides a ready-to-use, deterministic clock source with predictable latency and simplified board layout, but sacrifices flexibility if future frequency changes are anticipated. For designs requiring precise tuning or multiple frequencies from one IC, a programmable alternative might offer better long-term value despite higher initial complexity.

How does the spread spectrum modulation capability (or lack thereof) influence EMI performance when using the SIT9120AI-2D3-25E166.600000?: Unlike some programmable oscillators that include built-in spread spectrum clocking (SSC) to reduce peak emissions at specific harmonics, the SIT9120AI-2D3-25E166.600000 does not feature SSC per its parameter listing. As a result, system designers must rely on external techniques such as careful routing, ground plane stitching, and filtering to meet FCC or CISPR compliance—particularly important in RF-sensitive environments or compact enclosures where radiated emissions could exceed regulatory limits.

What are the trade-offs between using the SIT9120AI-2D3-25E166.600000 and an integrated PLL-based clock generator for generating 166.6 MHz from a lower reference frequency?: Integrating a PLL with a low-frequency reference would add jitter accumulation, increased power consumption, and layout complexity compared to directly driving the SIT9120AI-2D3-25E166.600000. The standalone oscillator avoids synthesis noise penalties and simplifies timing budget analysis, offering superior signal purity at the expense of needing an exact match to the desired frequency in the catalog. This favors simplicity and predictability in mission-critical timing paths.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT9120AI-2D3-25E166.600000

Product Attribute
Part Number	SIT9120AI-2D3-25E166.600000Y	SIT9120AI-2D3-25E166.600000T	SIT9120AI-2D3-25E166.600000X	SIT9120AI-2D3-25E166.000000Y
Manufacturer	SiTime	SiTime	SiTime	SiTime
Type	-	-	-	-
Base Resonator	-	-	-	-
Size / Dimension	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Current - Supply (Max)	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Height - Seated (Max)	-	-	-	-
Output	-	-	-	-
Frequency Stability	-	-	-	-
Ratings	-	-	-	-
Function	-	-	-	-
Frequency	-	-	-	-
Series	-	-	-	-
Voltage - Supply	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad

SIT9120AI-2D3-25E166.600000 Datasheet PDF

Download SIT9120AI-2D3-25E166.600000 pdf datasheets and SiTime documentation for SIT9120AI-2D3-25E166.600000 - SiTime.

Other Related Documents: Manufacturing Notes for SiTime Products.pdf

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Customer Reviews

Evaluation: 10 Articles

ECUb***h

Sep 22, 2026

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.
RS48***ieldTech

Sep 16, 2026

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.
Logi***b_Chris

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.
Circ***FixerTom

Sep 2, 2026

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

Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
Nikh***ech

Aug 13, 2026

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

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In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Common Countries Logistic Time Reference
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

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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