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Skyworks Solutions Inc. SI5344A-B04582-GMR
- Part No.:
- SI5344A-B04582-GMR
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- -
- Datasheet:
-
SI5344A-B04582-GMR.pdf
- Description:
- IC CLK BUFFER PLL 44QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,904
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Product details
Overview
SI5344A-B04582-GMR from Skyworks is a 4-input, 4-output jitter attenuating clock multiplier with fourth-generation DSPLL™ and MultiSynth™ architecture. It delivers ultra-low 90 fs rms jitter, supports differential (8 kHz–750 MHz) and LVCMOS (8 kHz–250 MHz) inputs, and generates programmable outputs up to 1028 MHz (differential) or 250 MHz (LVCMOS), serving as the timing core in SyncE-compliant carrier Ethernet switches.
For engineers reviewing the SI5344A-B04582-GMR datasheet, SI5344A-B04582-GMR pinout, SI5344A-B04582-GMR application, or SI5344A-B04582-GMR equivalent, key selection considerations include G.8262 EEC Option 1/2 compliance, digitally programmable jitter attenuation bandwidth (0.1 Hz–4 kHz), hitless input switching, integrated loop filter, and factory-programmed NVM configuration for guaranteed power-up frequency stability.
Technical Context
The SI5344A-B04582-GMR implements a fourth-generation DSPLL with fully integrated loop filter and digitally configurable bandwidth (0.1 Hz–4 kHz), enabling precise jitter filtering without external components. Its MultiSynth output dividers support both integer and fractional synthesis, allowing any-output-frequency generation from any-input-frequency.
It features automatic/manual input clock switching with hitless, ramped, and glitchless modes; status monitoring (LOS/OOF/LOL); and DCO mode with 0.001 ppb step size. Core supply is 1.8 V ±5% (VDD), analog supply 3.3 V ±5% (VDDA), with independent 1.8/2.5/3.3 V output supply pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Jitter (rms) | 90 fs - meets stringent ITU-T G.8262 EEC Option 1 & 2 requirements for SyncE line cards |
| Input range (diff) | 8 kHz–750 MHz - accepts common telecom reference clocks including SONET/SDH and OTN rates |
| Output range (diff) | 100 Hz–1028 MHz - covers 10G/100G Ethernet, CPRI, and broadcast video pixel clocks |
| Jitter BW | 0.1 Hz–4 kHz - digitally programmable to optimize phase noise vs. wander trade-off per application |
| Supply voltages | VDD = 1.8 V ±5%, VDDA = 3.3 V ±5% - enables low-power operation with separate analog domain isolation |
| Package | 44-QFN 7×7 mm - surface-mount footprint compatible with high-density networking PCB layouts |
| Temp range | –40 °C to +85 °C - qualified for industrial and telecom infrastructure environments |
Pinout & Package
SI5344A-B04582-GMR is housed in a 44-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Skyworks Si5344 Rev D datasheet Section 9 "Pin Descriptions".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN3 | Differential/LVCMOS input | Four selectable clock inputs supporting automatic/manual switching and gapped clock lock |
| OUT0–OUT3 | Programmable output | Four independently configurable outputs supporting LVDS/LVPECL/LVCMOS/CML/HCSL formats |
| XA/XB | Crytal oscillator interface | Connects to 25–54 MHz fundamental-mode crystal; internal load caps eliminate external components |
| SCL/SDA | I²C control interface | Two-wire serial interface for configuration, status readback, and NVM programming |
| INTRb | Interrupt output | Active-low open-drain flag indicating LOS, OOF, or LOL events for system fault monitoring |
| VDD/VDDA | Power supplies | Separate digital (1.8 V) and analog (3.3 V) rails minimize supply noise coupling into timing path |
| GNDA/GND | Ground planes | Dedicated analog and digital ground pins ensure clean return paths for low-jitter performance |
Key Features
| Feature | Design Value |
|---|---|
| DSPLL jitter attenuation | Digitally programmable 0.1 Hz–4 kHz loop bandwidth enables application-specific jitter/wander optimization |
| Hitless input switching | Eliminates phase transients when switching between fractionally related inputs (e.g., 155.52 MHz ↔ 622.08 MHz) |
| Factory-programmed NVM | Guarantees known output frequencies at power-up-no host initialization required for fixed configurations |
| MultiSynth fractional synthesis | Supports any-output-frequency generation (0.001 Hz resolution) from any-input-frequency without external VCXO |
| Status monitoring | Real-time detection of input loss-of-signal (LOS), out-of-frequency (OOF), and loss-of-lock (LOL) via INTRb pin |
Applications
| Carrier Ethernet Switch Timing | OTN Muxponder Clocking |
|---|---|
Use Scenario: Synchronizing multiple 10G/100G Ethernet PHYs and MAC layers in a modular switch chassis with strict SyncE G.8262 compliance. IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier providing four low-jitter outputs locked to a primary SyncE reference while maintaining holdover during reference loss. Use Value: Enables EEC Option 1/2 compliance with 90 fs rms jitter and seamless holdover using averaged historical frequency data over up to 120 seconds. | Use Scenario: Generating precise OTU-2/OTU-3/OTU-4 line-rate clocks (e.g., 1.25 GHz, 2.488 GHz, 10.709 GHz) from a single 155.52 MHz or 622.08 MHz reference in metro DWDM systems. IC Role / Device Role / Timing Role: Any-frequency clock synthesizer converting telecom-standard references into exact OTN frame-aligned frequencies via fractional MultiSynth division. Use Value: Eliminates need for multiple discrete oscillators or PLLs; achieves sub-ppb frequency accuracy and <1 ps edge jitter for FEC and framing integrity. |
| Broadcast Video Synchronization | Test & Measurement Reference |
Use Scenario: Distributing genlock-capable pixel clocks (e.g., 74.25 MHz, 148.5 MHz) across SDI routing matrices and frame synchronizers in 4K/8K production studios. IC Role / Device Role / Timing Role: Low-jitter clock multiplier generating multiple synchronized video clocks from a master black burst or tri-level sync reference. Use Value: Delivers 90 fs rms jitter and zero-delay mode capability to preserve phase alignment across distributed video processing paths. | Use Scenario: Serving as a reconfigurable jitter source or clean reference in bit-error-rate testers (BERTs), oscilloscopes, and signal analyzers requiring programmable, low-phase-noise clocks. IC Role / Device Role / Timing Role: Programmable jitter attenuator used to inject controlled jitter or generate ultra-clean reference signals for instrument calibration. Use Value: Supports DCO mode with 0.001 ppb step size and Fastlock for rapid frequency settling-critical for automated test sequence repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar jitter attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5344A-D-GM1 | Same 4-in/4-out architecture, but unprogrammed OTP memory; requires external I²C/SPI configuration at startup | No factory preconfiguration; suitable for designs needing runtime reprogramming or multi-config flexibility | Select when firmware-controlled dynamic frequency changes or field updates are required |
| LMK04832ISQE/NOPB | 2-input/14-output, dual-loop PLL with higher integration (integrated LDOs, SPI-only interface), 110 fs rms jitter | Targets high-channel-count instrumentation and radar; lacks G.8262 certification and NVM power-up guarantee | Select for systems requiring >4 outputs or integrated power management, accepting higher jitter and no SyncE validation |
Compared with SI5344A-B04582-GMR, Si5344A-D-GM1 offers identical silicon functionality but requires host initialization, while LMK04832ISQE/NOPB provides greater output count and integrated supplies at the cost of SyncE compliance and guaranteed power-up behavior.
Availability
SI5344A-B04582-GMR is available at Aetrix Electronics and suitable for carrier Ethernet switches, OTN muxponders, broadcast video infrastructure, and test equipment requiring stable component supply with guaranteed factory-programmed timing behavior.
Supply support for SI5344A-B04582-GMR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for communications, industrial, and automotive markets.
The SI5344A-B04582-GMR belongs to Skyworks' Si534x family of jitter-attenuating clock multipliers, designed specifically for telecom infrastructure demanding G.8262 SyncE compliance, ultra-low jitter, and robust holdover performance.
FAQ
What is the factory-programmed configuration of the SI5344A-B04582-GMR?
The SI5344A-B04582-GMR is preconfigured by Skyworks with a specific frequency plan stored in one-time-programmable (OTP) NVM. This ensures that all four outputs generate defined frequencies at power-up without host processor intervention-ideal for systems requiring deterministic timing behavior on boot.
Does the SI5344A-B04582-GMR support G.8262 Synchronous Ethernet compliance?
Yes, the SI5344A-B04582-GMR meets ITU-T G.8262 EEC Option 1 and Option 2 specifications. Its 90 fs rms jitter, programmable jitter attenuation bandwidth (0.1 Hz–4 kHz), and holdover stability-enabled by up to 120 seconds of averaged historical frequency data-fulfill the stringent phase noise and wander requirements for SyncE line cards.
Can the SI5344A-B04582-GMR operate without an external crystal?
No-the SI5344A-B04582-GMR requires a 25–54 MHz fundamental-mode crystal connected to XA/XB pins to provide the stable reference for free-run and holdover modes. The internal oscillator uses this crystal; no external clock input can substitute for XA/XB in those modes.
What input clock types does the SI5344A-B04582-GMR accept?
The SI5344A-B04582-GMR accepts four differential (LVDS/LVPECL/CML/HCSL) or LVCMOS inputs (IN0–IN3), each configurable independently. Input frequency ranges are 8 kHz–750 MHz (differential) and 8 kHz–250 MHz (LVCMOS), supporting telecom standards like SONET OC-48/192 and Ethernet PTP grandmaster references.
How does the SI5344A-B04582-GMR handle loss of input reference?
Upon input failure, the SI5344A-B04582-GMR automatically enters holdover mode, using an averaged frequency derived from up to 120 seconds of prior locked history. The final holdover frequency is calculated from a programmable window within that history, minimizing phase disturbance-ensuring continuous, stable timing during reference outages.
SI5344A-B04582-GMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- PLL:
- -
- Input:
- -
- Output:
- -
- Number of Circuits:
- -
- Ratio - Input:Output:
- -
- Differential - Input:Output:
- -
- Frequency - Max:
- -
- Divider/Multiplier:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
SI5344A-B04582-GMR FAQ
1.How can I place an order for SI5344A-B04582-GMR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI5344A-B04582-GMR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI5344A-B04582-GMR reliable?
The price and inventory of SI5344A-B04582-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5344A-B04582-GMR is usually 5 days.
3.What payment methods are accepted for SI5344A-B04582-GMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5344A-B04582-GMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI5344A-B04582-GMR?
SI5344A-B04582-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI5344A-B04582-GMR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI5344A-B04582-GMR?
For technical support, including SI5344A-B04582-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5344A-B04582-GMR requirements.
6.How does Aetrix verify that SI5344A-B04582-GMR is sourced from the original manufacturer or authorized distributors?
All SI5344A-B04582-GMR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI5344A-B04582-GMR meets industry standards.
7.What is the process for return or replacement of SI5344A-B04582-GMR?
All SI5344A-B04582-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5344A-B04582-GMR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI5344A-B04582-GMR part is unused and in its original packaging.
Return procedure for SI5344A-B04582-GMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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