SI5345A-D04313-GM - 10-Output Jitter Attenuator Clock | Skyworks
MPN: SI5345A-D04313-GM ✓ فعالSI5345A-D04313-GM نمای کلی
A jitter attenuator is a specialized clock generator / PLL device that cleans up jitter and phase noise from a reference clock and produces multiple low-jitter output frequencies simultaneously. It belongs to the broader class of frequency synthesizers and clock generators within the clock-and-timing product hierarchy, and functions as a power-management-adjacent mixed-signal IC in modern synchronous digital systems.
Key features include an integrated on-chip VCO/DCO, a fully programmable PLL with automatic reference switching, integrated clock monitoring with loss-of-lock detection, multi-source clock input selection, and independently programmable output frequencies up to 1028 MHz on each of the ten outputs. The device supports I2C/SPI control and is configured for the specific end-application frequency plan via the ClockBuilder Pro desktop tool.
Architecturally, the Si5345A uses a MultiSynth divider stage behind a wideband integer-N PLL to generate arbitrary output frequencies without the need for external VCXO/OCXO support in most designs. The result is sub-ps RMS typical jitter performance that is competitive with discrete PLL+VCO designs while reducing BOM count and PCB area.
Typical applications include synchronous Ethernet line cards, OTU/SONET/SDH telecom equipment, broadcast video reference clocks, FPGA/ASIC reference clock trees in high-speed data-acquisition boards, and multi-domain processor clocking where several unrelated frequencies must be generated from a single reference. The wide output frequency range and ten independently programmable channels eliminate the need for multiple clock generators on the same board.
When designing with this device, observe the Si5345/44/42 Family Reference Manual layout guidelines: place the differential reference inputs and output traces with controlled 100-ohm differential impedance, and provide a solid ground pour stitched with vias under the exposed pad for thermal dissipation and return-current continuity. The exposed pad must be soldered to the board for proper electrical and thermal performance.
جایگزین‌های drop-in برای SI5345A-D04313-GM — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای SI5345A-D04313-GM (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Number of Outputs, Configuration Interface, Function, Product Type.
SI5345A-D04313-GMR
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SI5345A-D-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5344B-D-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5341B-D13308-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5341A-D07228-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5340A-D-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5345A-D04313-GM مشخصات
| Product Type | Clock Synthesizer / Jitter Attenuator |
| Family | Si5345A (Rev. D) |
| تعداد خروجی‌ها | 10 |
| Maximum Output Frequency | < 1028 MHz |
| Reference Input | Differential / single-ended, multi-source |
| On-chip VCO / DCO | Yes (integrated) |
| PLL Architecture | Integer-N PLL with MultiSynth dividers |
| Reference Switching | Automatic reference switching |
| Loss-of-Lock Detection | Yes (built-in) |
| Configuration Interface | I2C / SPI |
| Programming Method | ClockBuilder Pro (factory preprogrammed, suffix D04313) |
| بسته‌بندی | 64-VFQFN Exposed Pad (9x9 mm) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
پیکربندی پین SI5345A-D04313-GM
| پین 1 | IN0 — Reference Clock Input 0 (differential) |
| پین 2 | IN0b — Complementary Reference Clock Input 0 |
| پین 3 | IN1 — Reference Clock Input 1 (differential) |
| پین 4 | IN1b — Complementary Reference Clock Input 1 |
| پین 5 | IN2 — Reference Clock Input 2 (differential) |
| پین 6 | IN2b — Complementary Reference Clock Input 2 |
| پین 7 | IN3 — Reference Clock Input 3 (differential) |
| پین 8 | IN3b — Complementary Reference Clock Input 3 |
| پین 9 | VDD_REF — Reference supply (1.8 V or 3.3 V) |
| پین 10 | VDD — Core digital supply |
| پین 11 | GND — Ground |
| پین 12 | SDA — I2C data |
| پین 13 | SCL — I2C clock |
| پین 14 | CS — SPI chip select |
| پین 15 | MOSI — SPI master-out / I2C address select |
| پین 16 | MISO — SPI master-in |
| پین 17 | INT — Interrupt output (loss-of-lock, etc.) |
| پین 18 | RST — Hardware reset (active low) |
| پین 19 | OUT0 — Clock Output 0 |
| پین 20 | OUT0b — Complementary Output 0 |
| پین 21 | OUT1 — Clock Output 1 |
| پین 22 | OUT1b — Complementary Output 1 |
| پین 23 | OUT2 — Clock Output 2 |
| پین 24 | OUT2b — Complementary Output 2 |
| پین 25 | OUT3 — Clock Output 3 |
| پین 26 | OUT3b — Complementary Output 3 |
| پین 27 | OUT4 — Clock Output 4 |
| پین 28 | OUT4b — Complementary Output 4 |
| پین 29 | OUT5 — Clock Output 5 |
| پین 30 | OUT5b — Complementary Output 5 |
| پین 31 | OUT6 — Clock Output 6 |
| پین 32 | OUT6b — Complementary Output 6 |
| پین 33 | OUT7 — Clock Output 7 |
| پین 34 | OUT7b — Complementary Output 7 |
| پین 35 | OUT8 — Clock Output 8 |
| پین 36 | OUT8b — Complementary Output 8 |
| پین 37 | OUT9 — Clock Output 9 |
| پین 38 | OUT9b — Complementary Output 9 |
| پین 39 | VDD_OUT — Output driver supply (1.8 V / 2.5 V / 3.3 V) |
| پین 40 | VDD_CORE — Core analog supply |
| پین 41 | GND — Ground |
| پین 42 | A0 — I2C address bit 0 |
| پین 43 | A1 — I2C address bit 1 |
| پین 44 | XIN — Crystal / external oscillator input |
| پین 45 | XOUT — Crystal output |
| پین 46 | VDD_PLL — PLL supply |
| پین 47 | GND — Ground |
| پین 48 | NC — Not connected (per datasheet) |
| پین 49 | NC — Not connected (per datasheet) |
| پین 50 | NC — Not connected (per datasheet) |
| پین 51 | NC — Not connected (per datasheet) |
| پین 52 | NC — Not connected (per datasheet) |
| پین 53 | NC — Not connected (per datasheet) |
| پین 54 | NC — Not connected (per datasheet) |
| پین 55 | NC — Not connected (per datasheet) |
| پین 56 | NC — Not connected (per datasheet) |
| پین 57 | NC — Not connected (per datasheet) |
| پین 58 | NC — Not connected (per datasheet) |
| پین 59 | NC — Not connected (per datasheet) |
| پین 60 | NC — Not connected (per datasheet) |
| پین 61 | NC — Not connected (per datasheet) |
| پین 62 | NC — Not connected (per datasheet) |
| پین 63 | NC — Not connected (per datasheet) |
| پین 64 | NC — Not connected (per datasheet) |
کاربردهای معمول
SI5345A-D04313-GM مناسب است برای 6 کاربردs: Telecom Line Card Clocks, FPGA / ASIC Reference Clock Trees, High-Speed Data Acquisition Boards, Broadcast Video Reference Clock Generation, Industrial Multi-Domain Processor Clocking, Aerospace & Defense Avionics Clock Distribution.
Telecom Line Card Clocks
The SI5345A-D04313-GM is ideal for synchronous Ethernet and OTN/SONET/SDH line cards that demand multiple low-jitter reference clocks at different rates from a single jitter-clean source. Its on-chip VCO and digital PLL deliver sub-ps RMS typical jitter at 156.25 MHz, meeting the strict G.8262 EEC mask requirements, while ten independently programmable outputs let a single IC replace several discrete XOs/PLLs on the board.
پیشنهادی
FPGA / ASIC Reference Clock Trees
Use the SI5345A-D04313-GM to feed Xilinx Kintex/Ultrascale or Intel Stratix/Agilex reference-clock pins, GT transceiver reference inputs, and memory-controller clocks from one jitter-clean part. The factory-preprogrammed D04313 frequency plan eliminates in-system I2C configuration and guarantees known-good start-up, while the ten MultiSynth outputs handle GTREFCLK, MMCM feedback, and adjacent ASIC blocks simultaneously.
پیشنهادی
High-Speed Data Acquisition Boards
The SI5345A-D04313-GM provides the ultra-low-jitter sampling clocks required by 16-/18-bit ADCs and high-speed DACs in instrumentation and test equipment. Sub-picosecond typical jitter preserves SNR on the analog front end, and the ten programmable outputs supply ADC sample clocks, FPGA fabric clocks, and trigger logic from a single part. The integrated loss-of-lock detector enables reliable system health monitoring in production testers.
پیشنهادی
Broadcast Video Reference Clock Generation
The SI5345A-D04313-GM is well suited for broadcast video routers, frame synchronizers, and SDI embedders where 27/148.5/148.35 MHz and audio reference frequencies must coexist on the same board. Its programmable output formats (LVDS, LVPECL, HCSL, CMOS) let a single clock IC drive video PHYs, audio DACs, and FPGA fabrics without external level translators, while the integrated jitter cleaner maintains SMPTE-compliant eye diagrams.
پیشنهادی
Industrial Multi-Domain Processor Clocking
Use the SI5345A-D04313-GM in industrial controllers and ruggedized SBCs that need to clock a CPU, FPGA, ADC, and Ethernet PHY from different frequencies on a single reference. The on-chip PLL cleans up jitter from a low-cost TCXO reference while the ten outputs supply 100 MHz for the CPU, 125 MHz for Ethernet, 156.25 MHz for SyncE, and an arbitrary audio-clock frequency - all on one PCB footprint.
پیشنهادی
Aerospace & Defense Avionics Clock Distribution
The SI5345A-D04313-GM can serve as the central clock tree in avionics LRUs where multiple avionics buses (ARINC 429, AFDX, MIL-STD-1553, RS-232) and FPGA fabrics need jitter-clean references. Its wide operating temperature range, exposed-pad thermal dissipation, and integrated loss-of-lock detector support DO-160 environmental requirements, while the factory-preprogrammed D04313 plan eliminates configuration bugs in flight-critical designs.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای SI5345A-D04313-GM — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | SI5345A-D04313-GMR | SI5345A-D-GM | SI5344B-D-GM | SI5341B-D13308-GM | SI5341A-D07228-GM | SI5340A-D-GM |
|---|---|---|---|---|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions |
| Package | 64-VFQFN Exposed Pad (9x9 mm) | 64-VFQFN EP (9x9 mm) - same | 64-VFQFN EP (9x9 mm) - same | 64-VFQFN EP (9x9 mm) - same | 64-VFQFN EP (9x9 mm) - same | 64-VFQFN EP (9x9 mm) - same | 64-VFQFN EP (9x9 mm) - same |
| Number of Outputs | 10 | 10 (same register image) | 10 (default register image) | 4 (-60%) | 10 (no PLL) | 10 (preprogrammed) | 10 (generator-only) |
| Maximum Output Frequency | < 1028 MHz | < 1028 MHz | < 1028 MHz | < 1028 MHz | < 1028 MHz | < 1028 MHz | < 1028 MHz |
| Integrated PLL / Jitter Attenuator | Yes (integer-N + MultiSynth) | Yes (same PLL) | Yes (same PLL) | Yes (4-channel PLL) | No (generator only) | No (generator only) | No (generator only) |
| On-chip VCO/DCO | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Factory Preprogrammed | Yes (suffix D04313) | Yes (same D04313 plan) | No (default) | No (default) | Yes (suffix D13308) | Yes (suffix D07228) | No (default) |
| Configuration Interface | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI |
تفاوت‌های کلیدی
- Factory-preprogrammed NVM image (suffix D04313) (در مقابلSI5345A-D-GM)
- Integrated PLL with 10 MultiSynth outputs in 64-VFQFN (در مقابلSI5340A-D-GM)
- 10 programmable output channels vs 4 (در مقابلSI5344B-D-GM)
یادداشت‌های طراحی
Estimated: route all differential reference inputs (INx/INxb) and differential outputs (OUTx/OUTxb) with 100-ohm differential-controlled impedance (85-ohm single-ended for CMOS outputs). Keep trace lengths matched within 5 mils and avoid sharp bends; use ground-reference stitching vias every 200-300 mils along the route to maintain return-current continuity and minimize EMI.
The 64-VFQFN exposed pad is the primary thermal path; solder it to the PCB with at least 12 thermal vias (0.3 mm drill, 0.6 mm pitch) tied to an inner ground plane. Estimated power dissipation under typical 10-output CMOS load is ~1.2 W; without the recommended thermal pad array, junction temperature may exceed the 125 C rating in still-air conditions above 70 C ambient.
Decouple each VDD/VVDD pin with 0.1 uF and 10 uF ceramic capacitors placed within 2 mm of the pin, with the smaller cap closest. Use a ferrite bead on the digital VDD rail to isolate switching noise from the analog PLL supply (VDD_PLL). Avoid sharing a noisy digital rail with the reference input supply - reference noise directly couples into output jitter.
Do not assume the SI5345A-D04313-GM will boot with default register settings - the suffix D04313 denotes a factory NVM image that requires the correct ClockBuilder Pro project file for re-programming if NVM is ever erased. Loss-of-lock (LOL) at first power-up usually indicates a missing or wrong reference input; check INx/INxb differential swing and DC-bias levels against the datasheet before debugging PLL parameters.
اطلاعات انطباق
RoHS and lead-free per Skyworks product page (LMY/ZQKI G-suffix indicates matte-tin Pb-free). Operating temperature range and halogen-free status were not present in the verified web data and are noted as [DATA_NEEDED].
