SI5341A-D-GM - 10-Output Any-Frequency Clock Generator | Skyworks
Артикул: SI5341A-D-GM ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.4 | $164,00 |
| 100 | $14.1 | $1.410,00 |
| 500 | $12.2 | $6.100,00 |
| 1.000 | $10.85 | $10.850,00 |
SI5341A-D-GM Обзор
A clock generator is a precision timing IC that accepts one or more low-frequency references (crystal, XO, or recovered clock) and synthesizes multiple clean, independent high-frequency output clocks for SoCs, FPGAs, ASICs, ADCs, DACs, and PHYs. The "any-frequency, any-output" architecture means each of the 10 outputs can be a different frequency and a different format without external loop filters, so a single Si5341A replaces multiple XO/VCXO parts.
Key features include 0.09 ps RMS typical phase jitter, fractional-N synthesis (1 ppb resolution), independent per-output dividers, programmable output slew rates, output enable/format pins, hardware configuration via I2C/SPI, and field-upgradeable NVM. Hardware configurations are stored in on-chip non-volatile memory and applied at power-up, allowing fully autonomous boot without host intervention. The QFN-64 with exposed thermal pad provides thermal resistance suitable for the 1 W typical operating dissipation.
The architecture combines a low-noise integer PLL reference path with MultiSynth fractional output stages that suppress fractional spurs below -75 dBc even at non-integer frequency plans. This enables clean clock trees in systems where reference and backplane frequencies are unrelated (100G/400G Ethernet, OTN, wireless baseband, JESD204B ADC/DAC clocks).
Typical applications include 100G/200G/400G Ethernet switch and router timing, OTN/WDM optical transport clock generation, JESD204B/C SYSREF for high-speed ADC and DAC converters, FPGA and ASIC reference clock trees, wireless base-station fronthaul, and broadcast video reference distribution. The wide output frequency range (0.0001 MHz to 1028 MHz) covers virtually any timing requirement in modern high-speed serial systems.
Each output supports independent format and frequency, so a single Si5341A can supply SYSREF, device clock, and reference clock to a JESD204B subsystem simultaneously while also driving a backplane SerDes at a different rate. This consolidation replaces a rack of XO crystals and fanout buffers and reduces BOM cost.
When designing with the Si5341A, use Skyworks ClockBuilder Pro for prototype configuration and always order factory pre-programmed OPN variants (e.g., Si5341A-Dxxxx-GM) for production to lock the configuration as a one-time programmable NVM image.
Аналоги без доработки для SI5341A-D-GM — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с SI5341A-D-GM (тот же форм-фактор и посадочное место) — отличается по Number of Outputs, Package, Configuration Interface, Function, Operating Temperature.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
SI5341A-B-GM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI5340A-D-GM
✅ Прямая замена✓ В наличии
$14.75 / шт.
Открыть даташит →SI5341A-D-GMR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI5341A-D07511-GM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI5341A-D07228-GM
✅ Прямая замена✓ В наличии
$18.92 / шт.
Открыть даташит →SiT95141
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI5341A-D-GM Характеристики
| Функция | 10-output any-frequency any-output clock generator |
| Количество выходов | 10 differential (configurable per-output format) |
| Maximum Output Frequency | 1028 MHz |
| Minimum Output Frequency | 0.0001 MHz (0.1 Hz) |
| Phase Jitter (12 kHz to 20 MHz) | 0.09 ps RMS typical |
| Напряжение питания | 1.71 V to 3.47 V |
| Reference Inputs | 4 (LVCMOS, LVDS, LVPECL, HCSL) |
| Output Formats | LVDS, LVPECL, HCSL, LVCMOS, CMOS (per-pin) |
| Synthesis Technology | MultiSynth fractional divider + integer PLL |
| Frequency Resolution | 1 ppb |
| Configuration Interface | I2C, SPI, on-chip NVM |
| Корпус | 64-VFQFN Exposed Pad (QFN-64) |
| Рабочая температура | -40 C to +85 C |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Руководство по цоколевке SI5341A-D-GM в корпусе 64-vfqfn exposed pad (qfn-64)
Цоколевка для SI5341A-D-GM (корпус 64-vfqfn exposed pad (qfn-64)). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для SI5341A-D-GM.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
SI5341A-D-GM подходит для 6 применениеs: 100G/200G/400G Ethernet Switch Timing, JESD204B/C ADC/DAC Converter Clock Tree, FPGA and ASIC Reference Clock Distribution, Wireless Base Station Fronthaul (CPRI/eCPRI), OTN/WDM Optical Transport Equipment, Broadcast Video and Reference Distribution.
100G/200G/400G Ethernet Switch Timing
The SI5341A-D-GM delivers 10 independent clocks at up to 1028 MHz with 0.09 ps RMS jitter, directly meeting the SerDes reference clock budgets of QSFP28, QSFP-DD, and OSFP transceivers. MultiSynth fractional dividers generate per-port frequencies from a single 25 MHz TCXO/OCXO reference without dedicated XO crystals for each port, cutting BOM and simplifying reference-tree design. Independent per-pin output format selection lets the same chip drive LVDS PHY and HCSL backplane simultaneously. The on-chip NVM eliminates host-controller boot dependency, which matters in managed switches that boot from cold-start.
Рекомендуется
JESD204B/C ADC/DAC Converter Clock Tree
For JESD204B/C sub-class 1 converters the SI5341A-D-GM provides the device clock, SYSREF, and frame clock from a single IC with deterministic latency across power cycles. The 0.09 ps phase jitter stays well below the JESD204B budgets for 12.5 Gbps lane rates, supporting 16-bit ADCs at 500+ MSPS. The MultiSynth synthesizer aligns SYSREF to device clock phase within 1 ppb resolution, removing the SYSREF-to-clock skew that traditionally forces external delay lines. A typical AFE7950 or ADC12DJ5200 design uses one SI5341A per converter cluster plus reference fanout.
Рекомендуется
FPGA and ASIC Reference Clock Distribution
Modern FPGAs and ASICs need up to a dozen unrelated clocks (Transceiver ref, GT/s SerDes, PCIe, DDR, sys clock, debug clock). The SI5341A-D-GM supplies 10 independent outputs at any mix of LVDS, LVCMOS, and HCSL from one board, replacing a fanout buffer plus crystal array. Per-output dividers and slew-rate control let one chip serve Xilinx Versal GTY, Altera Agilex, and ASIC SerDes simultaneously. The exposed-pad QFN provides ~28 C/W theta-JA, sufficient for the device's 1 W typical dissipation without forced airflow in production cards.
Рекомендуется
Wireless Base Station Fronthaul (CPRI/eCPRI)
In 4G/5G baseband units the SI5341A-D-GM generates the precise CPRI line clocks (1.2288/2.4576/3.072/4.9152/6.144 GHz) plus system clocks for SerDes fronthaul, all from a single GPS-disciplined TCXO reference. The 0.09 ps jitter maximizes the CPRI link budget at long fiber spans, and the integer-PLL reference path maintains synchronization during GPS holdover. Per-pin output enable and frequency-change registers let the baseband retune per-CPRI-rate without external intervention, supporting mixed-rate radio heads feeding the same baseband.
Рекомендуется
OTN/WDM Optical Transport Equipment
OTN/WDM line cards require dozens of reference clocks with different rates (100G: 161.13 MHz, 200G: 174.7 MHz, 400G: 425 MHz, and FEC references). The SI5341A-D-GM's 10 outputs and per-pin format selection let a single chip drive four QSFP-DD optics plus framer ASIC plus switch fabric in one circuit. The integer PLL provides -75 dBc spur suppression at non-integer rate plans, so even 525.148 MHz arbitrary rates keep eye diagrams clean. Configurable holdover via the on-chip NVM supports line-card redundancy switching without glitch.
Рекомендуется
Broadcast Video and Reference Distribution
Studio video routers, contribution encoders, and 12G-SDI gear require a house reference (PAL/NTSC tri-level, AES, word-clock) plus multiple 12G-SDI derived clocks. The SI5341A-D-GM supplies these from one IC and distributes them to multiple destinations simultaneously with sub-100 fs additive jitter. The fractional dividers lock non-integer relationships (e.g., 27 MHz -> 148.5 MHz) without external logic, and ClockBuilder Pro stores project-specific frequency plans for one-touch reproduction.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для SI5341A-D-GM — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SI5341A-B-GM | SI5340A-D-GM | SI5341A-D-GMR | SI5341A-D07511-GM | SI5341A-D07228-GM | SiT95141 |
|---|---|---|---|---|---|---|---|
| Package | 64-VFQFN Exposed Pad | 64-VFQFN Exposed Pad - same | 64-VFQFN Exposed Pad - same | 64-VFQFN Exposed Pad - same | 64-VFQFN Exposed Pad - same | 64-VFQFN Exposed Pad - same | 64-VFQFN Exposed Pad - same |
| Brand | Skyworks Solutions | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same | SiTime - different |
| Number of Outputs | 10 | 10 | 4 | 10 | 10 | 10 | 10 |
| Maximum Output Frequency | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 700 MHz |
| Silicon Revision | Rev D | Rev B (older) | Rev D | Rev D | Rev D | Rev D | SiTime silicon |
| NVM Configuration | Default Si5341A plan | Default Si5341A Rev B | Default Si5340A | Same as SI5341A-D-GM | Custom factory programmed | Custom factory programmed | Custom factory programmed (SiTime) |
| Configuration Tool | ClockBuilder Pro | ClockBuilder Pro | ClockBuilder Pro | ClockBuilder Pro | ClockBuilder Pro | ClockBuilder Pro | SiTime tools |
Ключевые отличия
- 10 independent any-output frequencies up to 1028 MHz each (против SI5340A-D-GM)
- 0.09 ps RMS phase jitter (12 kHz to 20 MHz) (против SI5341A-B-GM)
- Cross-vendor pin-compatible drop-in alternative exists (против SiT95141 (SiTime))
Заметки по проектированию
The 64-VFQFN exposed-pad package dissipates approximately 1 W at full load with all 10 LVDS outputs running at 1028 MHz. The exposed pad must be soldered to a continuous ground plane and the PCB thermal design should use at least 4 thermal vias (0.3 mm drill, 1 mm pitch) under the e-pad for theta-JA reduction below 28 C/W. For convection-cooled cards with <1 m/s airflow, de-rate to 8 outputs or implement a copper pour of at least 1 square inch around the e-pad. Estimated: Theta-JA = 28 C/W in a 4-layer 2 oz PCB layout.
Layout per Skyworks reference design: place the 64-VFQFN package over a continuous ground plane, keep reference inputs on a single routing layer, and place each output's 100-ohm differential termination at the receiver, not near the Si5341A. Refclk traces must match length within 5 mil across the differential pair. The exposed pad must connect to ground with 25-mil thermal via array to keep the junction below 125 C at 1 W dissipation. Use 0402 0.1 uF X7R bypass caps within 1 mm of each supply pin; add a 10 uF bulk cap on the device's main supply rail.
Do not assume all factory pre-programmed OPNs (Si5341A-Dxxxx-GM) are field-reprogrammable - many are OTP NVM and cannot be reloaded after programming. For development boards use SI5341A-D-GM (reprogrammable via I2C/SPI) and lock the design before scaling to a custom OPN. Another common pitfall is bypassing ClockBuilder Pro and writing register scripts manually; Skyworks' official tool handles the iterative frequency planning and saves silicon-specific tuning values that raw register writes miss. For JESD204B designs, ensure SYSREF phase alignment with the Si5341A's SYSREF-to-device-clock delay specification (typically <100 ps) is met, or capture windows will slip.
Информация о соответствии
RoHS and REACH compliant per DigiKey and Mouser listings. AEC-Q100 not applicable for clock generator; halogen-free status not stated in the Verified Web Data and remains unconfirmed.
