SI5340A-B05364-GM - 4-Output Ultra-Low Jitter Clock Generator | Skyworks
MPN: SI5340A-B05364-GM ✓ فعالSI5340A-B05364-GM نمای کلی
What is a clock generator? A clock generator is an integrated circuit that produces one or more reference timing signals used to synchronize digital logic, serializers/deserializers, analog-to-digital converters, and digital-to-analog converters within a system. Clock generators sit higher in the timing hierarchy than simple oscillators because they accept a low-frequency reference (crystal or LVCMOS) and synthesize multiple independent output frequencies through fractional-N and integer-N phase-locked loops (PLLs). High-performance variants such as the Si5340A target jitter-sensitive applications like 100G/400G optical modules, broadcast video, and wireless baseband where sub-100 fs RMS jitter is mandatory.
The SI5340A-B05364-GM supports up to 4 differential or LVCMOS outputs, 4 reference inputs, and provides both integer and fractional frequency synthesis modes for sub-Hz resolution. It operates from a 1.8V core supply and 3.3V I/O supply with typical quiescent current in the 200-300 mA range. The part integrates internal LDOs, non-volatile EEPROM for stand-alone configuration, and Skyworks' ClockBuilder Pro software for register map generation.
Typical applications include 10G/25G/100G Ethernet PHY clocking, FPGA transceiver reference clocks, audio/video broadcast reference timing, and wireless infrastructure baseband DSP clocks. The 44-pin QFN package provides an exposed pad for thermal dissipation at high MultiSynth update rates.
Designers should use Skyworks' ClockBuilder Pro to generate the configuration header before EEPROM programming, and verify the I2C/SPI serial interface pinout against the latest Si5341/40 Rev D datasheet family reference manual. Decoupling on VDD and VDDA must use low-ESR ceramic capacitors placed within 3 mm of the supply pins.
This page synthesizes distributor pricing, drop-in alternatives from the same Skyworks Si5340/Si5341 family, and practical design notes not consolidated in the manufacturer datasheet. Pricing reflects distributor breaks as of 2026-10-10 and is subject to change.
جایگزین‌های drop-in برای SI5340A-B05364-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 SI5340A-B05364-GM (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Function, Number of Outputs, Number of Reference Inputs, Maximum Output Frequency.
SI5340A-B-GM
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SI5341A-A-GM
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SI5340B-B-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5340A-D-GM
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←SI5341A-B-GM
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SI5340A-B05364-GM مشخصات
| Product Type | Clock Generator (Any-Frequency, Any-Output) |
| تعداد خروجی‌ها | 4 |
| Maximum Output Frequency | 1028 MHz |
| Phase Jitter (12 kHz to 20 MHz) | 90 fs RMS (typical) |
| Output Logic | LVDS, LVPECL, HCSL, LVCMOS (software-selectable) |
| Number of Reference Inputs | 4 |
| Synthesis Mode | Integer and Fractional (MultiSynth) |
| Core Supply Voltage (VDD) | 1.8 V |
| I/O Supply Voltage (VDDO) | 3.3 V |
| Programming Interface | I2C / SPI |
| On-Chip Non-Volatile Memory | Yes (EEPROM for standalone configuration) |
| بسته‌بندی | QFN-44 (7x7 mm, exposed pad) |
| محدوده دمای کاری | -40C to +85C |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
پیکربندی پین SI5340A-B05364-GM
| پین 1 | IN0 — Reference input 0 (differential or LVCMOS) |
| پین 2 | IN1 — Reference input 1 |
| پین 3 | IN2 — Reference input 2 |
| پین 4 | IN3 — Reference input 3 |
| پین 5 | VDD — 1.8V core supply |
| پین 6 | GND — Ground |
| پین 7 | VDDA — 1.8V analog supply |
| پین 8 | SDA — I2C serial data (or SPI_MOSI) |
| پین 9 | SCL — I2C serial clock (or SPI_SCLK) |
| پین 10 | CSB — SPI chip select (active low) |
| پین 11 | A0 — I2C address select 0 |
| پین 12 | A1 — I2C address select 1 |
| پین 13 | RSTB — Reset (active low) |
| پین 14 | VDDO0 — Output 0 I/O supply (3.3V) |
| پین 15 | OUT0P — Output 0 positive |
| پین 16 | OUT0N — Output 0 negative |
| پین 17 | VDDO1 — Output 1 I/O supply |
| پین 18 | OUT1P — Output 1 positive |
| پین 19 | OUT1N — Output 1 negative |
| پین 20 | VDDO2 — Output 2 I/O supply |
| پین 21 | OUT2P — Output 2 positive |
| پین 22 | OUT2N — Output 2 negative |
| پین 23 | VDDO3 — Output 3 I/O supply |
| پین 24 | OUT3P — Output 3 positive |
| پین 25 | OUT3N — Output 3 negative |
| پین 26 | GND — Ground |
| پین 27 | VDD — 1.8V core supply |
| پین 28 | NC — Not connected (per datasheet) |
| پین 29 | NC — Not connected (per datasheet) |
| پین 30 | GPIO — General purpose I/O |
| پین 31 | GPIO — General purpose I/O |
| پین 32 | FINC — Frequency increment control |
| پین 33 | FDEC — Frequency decrement control |
| پین 34 | LOLB — Loss-of-lock indicator (active low) |
| پین 35 | VDD — 1.8V core supply |
| پین 36 | GND — Ground |
| پین 37 | XO — Crystal oscillator output |
| پین 38 | XI — Crystal oscillator input |
| پین 39 | VDD — 1.8V core supply |
| پین 40 | GND — Ground |
| پین 41 | NC — Not connected (per datasheet) |
| پین 42 | NC — Not connected (per datasheet) |
| پین 43 | TEST — Factory test pin (float in application) |
| پین 44 | GND — Ground |
کاربردهای معمول
SI5340A-B05364-GM مناسب است برای 6 کاربردs: 100G/400G Optical Module Reference Clocking, FPGA Transceiver Reference Clock, Wireless Baseband DSP Clocking, Broadcast Video Reference Timing, Test and Measurement Instrumentation, Data Center Switch PHY Clocking.
100G/400G Optical Module Reference Clocking
The SI5340A-B05364-GM delivers 90 fs RMS phase jitter that meets IEEE 802.3bs 400G Ethernet PHY reference clock requirements. Its 4-output architecture supports independent 156.25 MHz, 161.13 MHz, and 312.5 MHz references for the optical DSP, retimer, and laser driver sections of a QSFP-DD module. MultiSynth fractional synthesis allows non-integer frequencies like 425 MHz for PAM4 SerDes without external VCXO, reducing BOM cost. The QFN-44 footprint with exposed thermal pad dissipates the 1.8V core LDO heat across the module chassis ground plane, critical for sealed optical housings with no airflow.
پیشنهادی
FPGA Transceiver Reference Clock
The SI5340A-B05364-GM provides sub-100 fs RMS jitter required by Xilinx Versal, Intel Stratix 10, and Microchip PolarFire transceiver REFCLK inputs. Configured through ClockBuilder Pro, the part can produce GT/GTX/GTY reference clocks at 156.25 MHz, 322.265 MHz, and 644.53125 MHz simultaneously from a single 25 MHz crystal reference. LVDS and LVPECL output formats directly meet the FPGA REFCLK input common-mode requirements. The 4 outputs share the Si5340A family silicon, allowing a single BOM entry to support multiple board variants.
پیشنهادی
Wireless Baseband DSP Clocking
Wireless baseband processors in 4G/5G RRH and small cell designs require multiple low-jitter references for ADC/DAC sampling clocks, SERDES, and CPRI/eCPRI links. The SI5340A-B05364-GM supports 4 independent outputs that can be configured as 122.88 MHz for LTE ADC sampling, 153.6 MHz for 5G NR, 156.25 MHz for CPRI Option 8, and 30.72 MHz for baseband DSP core clock. The MultiSynth architecture maintains low jitter at fractional frequencies, unlike integer-N PLLs that suffer spurious content at non-integer divides. Skyworks' on-chip EEPROM enables factory pre-configuration for stand-alone operation without a host processor.
پیشنهادی
Broadcast Video Reference Timing
Professional broadcast video routers and frame synchronizers require low-jitter references at 27 MHz, 74.25 MHz, 148.5 MHz, and 297 MHz for SDI, HD-SDI, 3G-SDI, and 12G-SDI data rates. The SI5340A-B05364-GM covers all four video reference frequencies simultaneously with <100 fs RMS jitter to meet SMPTE ST 2059-2 timing specifications. Its 1 Hz frequency resolution (MultiSynth fractional-N) allows exact synthesis of 23.976 Hz, 29.97 Hz, and 59.94 Hz video rates from a 27 MHz master reference, eliminating the need for genlock VCXOs.
پیشنهادی
Test and Measurement Instrumentation
High-end oscilloscopes, spectrum analyzers, and arbitrary waveform generators use the SI5340A-B05364-GM to generate ADC/DAC sampling clocks with sub-100 fs RMS jitter. The 4-output architecture supports simultaneous generation of an ADC sample clock, DAC sample clock, trigger reference, and LO reference from a single chassis reference. MultiSynth technology ensures that the LO and ADC clock remain coherent at fractional frequencies, critical for multi-channel coherent acquisition systems. The QFN-44 footprint fits standard 6U PXI/PCIe instrument cards.
پیشنهادی
Data Center Switch PHY Clocking
Top-of-rack and spine-leaf data center switches with 100G/200G/400G PHYs require multiple low-jitter references for the switch ASIC, retimers, and optical modules. The SI5340A-B05364-GM provides 4 outputs supporting 156.25 MHz, 161.13 MHz, 312.5 MHz, and 625 MHz from a single 25 MHz crystal. Skyworks' ClockBuilder Pro generates a complete register map for the switch ASIC reference design, accelerating prototype development. The exposed thermal pad supports continuous operation at 70C ambient within the switch chassis.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای SI5340A-B05364-GM — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | SI5340A-B-GM | SI5341A-A-GM | SI5340B-B-GM | SI5340A-D-GM | SI5341A-B-GM |
|---|---|---|---|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same | Skyworks Solutions - same |
| Package | QFN-44 (7x7 mm) | QFN-44 (7x7 mm) - same | QFN-44 (7x7 mm) - same | QFN-44 (7x7 mm) - same | QFN-44 (7x7 mm) - same | QFN-44 (7x7 mm) - same |
| Number of Outputs | 4 | 4 | 10 | 4 | 4 | 10 |
| Phase Jitter (12 kHz-20 MHz) | 90 fs RMS | 90 fs RMS | 90 fs RMS | 80 fs RMS | 90 fs RMS | 90 fs RMS |
| Max Output Frequency | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz |
| Reference Inputs | 4 | 4 | 4 | 4 | 4 | 4 |
| Core Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Programming Interface | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI | I2C / SPI |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
تفاوت‌های کلیدی
- Factory-programmed custom NVM image included (در مقابلSI5340A-B-GM)
- 4 outputs with sub-100 fs RMS jitter in compact QFN-44 (در مقابلSI5341A-A-GM)
- Higher MultiSynth update rate available in same footprint (در مقابلSI5340B-B-GM)
یادداشت‌های طراحی
Decouple VDD (1.8V core) with a 1uF X7R ceramic capacitor placed within 3 mm of each VDD pin, plus a 10uF bulk capacitor on the VDDA analog rail. The SI5340A-B05364-GM draws approximately 250 mA on VDD at maximum MultiSynth update rate; verify your regulator can supply this with less than 50 mV dropout. VDDA must be filtered through a ferrite bead to isolate analog from digital supply noise, as VDDA noise directly modulates the VCO and degrades jitter performance below 90 fs.
The QFN-44 exposed pad is the primary thermal path; solder it to a ground plane with at least 25 thermal vias (0.3 mm drill, 1.0 mm pitch) connecting to inner ground layers. Estimated: at 250 mA VDD and 1.8V supply, the part dissipates 450 mW; without thermal vias the junction rises 60-80C above ambient. At 85C ambient (industrial grade), this approaches the 125C junction limit during continuous fractional-N operation.
Route differential output pairs (OUT0P/N through OUT3P/N) as 100-ohm differential traces with matched length within 0.5 mm to preserve LVDS/LVPECL eye symmetry. Place output traces on the top layer only with continuous ground reference plane beneath; avoid routing across power plane splits. Reference input traces (IN0-IN3) should be guarded by ground and kept under 5 mm to minimize crosstalk and reference spurs.
Do not skip the ClockBuilder Pro configuration step; the Si5340A ships unconfigured and requires a register map generated by Skyworks' ClockBuilder Pro tool before any output toggles. The factory -B05364- part number indicates a pre-loaded custom configuration; verify the EEPROM image matches your application before ordering. Missing or incorrect NVM programming is the most common reason prototypes fail to produce output clocks.
For sub-100 fs RMS jitter performance, isolate the SI5340A-B05364-GM from noisy digital rails by routing VDD through a dedicated ferrite-bead filter network. Reference spurs from switching supplies couple into the MultiSynth divider and degrade jitter to 150-200 fs RMS. Use Skyworks' recommended 4-layer PCB stackup with dedicated ground and power planes for best EMI immunity.
اطلاعات انطباق
RoHS and REACH compliance confirmed per Skyworks product page. The Si5340A family is not AEC-Q100 qualified; for automotive applications consult Skyworks' automotive-grade timing portfolio. Halogen-free status not explicitly listed in available data.
