SI5341A-D07228-GM - 10-Output Ultra-Low Jitter Clock Gen | Skyworks
Référence : SI5341A-D07228-GM ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.62 | $256,20 |
| 100 | $22.74 | $2 274,00 |
| 500 | $20.45 | $10 225,00 |
| 1 000 | $18.92 | $18 920,00 |
SI5341A-D07228-GM Présentation
An any-frequency, any-output clock generator is a programmable timing IC that synthesizes arbitrary integer and non-integer related frequencies from a single reference. It belongs to the clock generator hierarchy: clock generator -> PLL/synthesizer -> timing IC -> semiconductor. By replacing multiple crystal oscillators with one programmable device, it enables design flexibility, BOM consolidation, and reduced board area for complex multi-clock systems used in communications infrastructure, broadcast video, and high-speed data conversion.
Key features include 90 fs RMS ultra-low jitter, ten independently programmable outputs, integrated MultiSynth fractional-N blocks, and built-in holdover capability. The Si5341A-D07228-GM operates from a 1.71 V to 3.47 V supply, offers selectable LVDS, LVPECL, HCSL, and LVCMOS output formats, and integrates an EEPROM for autonomous configuration. It supports Glitchless output muting and per-output phase adjustment, which simplifies PCB layout in dense multi-clock domains.
Architecturally, the Si5341A-D07228-GM combines a wide-band integer PLL that locks to an external reference with up to five MultiSynth fractional divider blocks that each independently synthesize non-integer related output frequencies. This dual-stage architecture avoids the spurs typical of single-loop fractional-N synthesizers while keeping frequency flexibility. Register-only configuration uses an I2C or SPI serial interface, and optional non-volatile configuration via on-chip EEPROM allows standalone boot without a host controller.
Typical applications include wireless base station timing, broadcast video reference clock generation, high-speed ADC/DAC sampling clocks, FPGA/ASIC reference and fabric clocks, OTN/SONET/SDH line cards, and server/storage timing. In all these roles, the Si5341A's 90 fs jitter preserves signal integrity in high-speed serial links and tight SNR budgets. When designing with this device, allocate a 64-pin 9 mm × 9 mm QFN footprint with a sufficient thermal via array under the exposed pad to keep junction temperature within range. A high-isolation multi-layer stack-up with split analog/digital ground is recommended because the part is sensitive to power-supply noise on the PLL supply rails. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour SI5341A-D07228-GM — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec SI5341A-D07228-GM (même facteur de forme et même empreinte) — différant par Package, Number of Outputs, Function, Output Formats, Maximum Output Frequency.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
SI5341A-D-GM
✅ Remplacement direct✓ En stock
$10.85 / unité
Voir la fiche technique →SI5341A-B-GM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SI5340A-D-GM
✅ Remplacement direct✓ En stock
$14.75 / unité
Voir la fiche technique →SI5341B-D-GM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SI5341A-D07228-GM Spécifications
| Product Type | Any-frequency, any-output clock generator |
| Nombre de sorties | 10 (programmable) |
| Maximum Output Frequency | 1028 MHz |
| Output Jitter | 90 fs RMS (12 kHz to 20 MHz) |
| Supply Voltage Range | 1.71 V to 3.47 V |
| Reference Input - Crystal | 25 MHz to 54 MHz |
| Reference Input - Differential Clock | 10 MHz to 750 MHz |
| Reference Input - LVCMOS Clock | 10 MHz to 250 MHz |
| Output Formats | LVDS / LVPECL / HCSL / LVCMOS |
| Configuration Interface | I2C / SPI |
| On-chip Configuration Memory | Yes (EEPROM) |
| Boîtier | 64-pin VFQFN exposed-pad (QFN-64) |
| Package Dimensions | 9 mm x 9 mm |
| Plage de température de fonctionnement | -40 C to +85 C |
| Type de montage | Surface Mount |
| MultiSynth Fractional Synthesizer | Yes (proprietary) |
| Statut RoHS | Compliant |
Configuration des broches de SI5341A-D07228-GM
| Broche 1 | IN0 — Reference clock input 0 (differential/single-ended) |
| Broche 2 | IN1 — Reference clock input 1 (differential/single-ended) |
| Broche 3 | XA — Crystal oscillator input A |
| Broche 4 | XB — Crystal oscillator input B |
| Broche 5 | VDDA — Analog supply voltage (1.8 V or 3.3 V) |
| Broche 6 | VDDA — Analog supply voltage (1.8 V or 3.3 V) |
| Broche 7 | GND — Ground |
| Broche 8 | VDD_DIG — Digital core supply voltage |
| Broche 9 | SDA — I2C data (or SPI MISO) |
| Broche 10 | SCL — I2C clock (or SPI SCLK) |
| Broche 11 | CS — SPI chip select (I2C address strap in I2C mode) |
| Broche 12 | RST — Device reset (active low) |
| Broche 13 | OUT0A — Clock output 0 positive (programmable format) |
| Broche 14 | OUT0B — Clock output 0 negative |
| Broche 15 | VDDO0 — Output supply for bank 0 |
| Broche 16 | GND — Ground |
| Broche 17 | OUT1A — Clock output 1 positive |
| Broche 18 | OUT1B — Clock output 1 negative |
| Broche 19 | VDDO1 — Output supply for bank 1 |
| Broche 20 | GND — Ground |
| Broche 21 | OUT2A — Clock output 2 positive |
| Broche 22 | OUT2B — Clock output 2 negative |
| Broche 23 | VDDO2 — Output supply for bank 2 |
| Broche 24 | GND — Ground |
| Broche 25 | OUT3A — Clock output 3 positive |
| Broche 26 | OUT3B — Clock output 3 negative |
| Broche 27 | VDDO3 — Output supply for bank 3 |
| Broche 28 | GND — Ground |
| Broche 29 | OUT4A — Clock output 4 positive |
| Broche 30 | OUT4B — Clock output 4 negative |
| Broche 31 | VDDO4 — Output supply for bank 4 |
| Broche 32 | GND — Ground |
| Broche 33 | OUT5A — Clock output 5 positive |
| Broche 34 | OUT5B — Clock output 5 negative |
| Broche 35 | VDDO5 — Output supply for bank 5 |
| Broche 36 | GND — Ground |
| Broche 37 | OUT6A — Clock output 6 positive |
| Broche 38 | OUT6B — Clock output 6 negative |
| Broche 39 | VDDO6 — Output supply for bank 6 |
| Broche 40 | GND — Ground |
| Broche 41 | OUT7A — Clock output 7 positive |
| Broche 42 | OUT7B — Clock output 7 negative |
| Broche 43 | VDDO7 — Output supply for bank 7 |
| Broche 44 | GND — Ground |
| Broche 45 | OUT8A — Clock output 8 positive |
| Broche 46 | OUT8B — Clock output 8 negative |
| Broche 47 | VDDO8 — Output supply for bank 8 |
| Broche 48 | GND — Ground |
| Broche 49 | OUT9A — Clock output 9 positive |
| Broche 50 | OUT9B — Clock output 9 negative |
| Broche 51 | VDDO9 — Output supply for bank 9 |
| Broche 52 | GND — Ground |
| Broche 53 | GPIO0 — General-purpose I/O 0 (status/control) |
| Broche 54 | GPIO1 — General-purpose I/O 1 |
| Broche 55 | GPIO2 — General-purpose I/O 2 |
| Broche 56 | GPIO3 — General-purpose I/O 3 |
| Broche 57 | I2C_SEL — I2C/SPI mode select strap |
| Broche 58 | A0 — I2C address LSB strap |
| Broche 59 | VDD_DIG — Digital core supply |
| Broche 60 | VDDA — Analog supply |
| Broche 61 | GND — Ground |
| Broche 62 | NC — Not connected (per datasheet) |
| Broche 63 | NC — Not connected (per datasheet) |
| Broche 64 | NC — Not connected (per datasheet) |
Applications typiques
SI5341A-D07228-GM convient pour 6 applications: Wireless Base Station Timing, Broadcast Video Reference Clock Generation, High-Speed ADC/DAC Sampling Clock, FPGA/ASIC Reference and Fabric Clocks, OTN/SONET/SDH Line Card Timing, Server and Storage Timing.
Wireless Base Station Timing
The SI5341A-D07228-GM is an excellent fit for 4G/5G base-station timing because its 90 fs RMS jitter preserves EVM on RF data converters and serial fronthaul links. With ten programmable outputs the part replaces up to ten discrete crystal oscillators that would otherwise be needed for LTE, GPS, and baseband clocking. MultiSynth fractional-N dividers allow non-integer related frequencies (e.g. 122.88 MHz, 245.76 MHz, 30.72 MHz) from a single 38.88 MHz reference. Reference-design-grade PSRR keeps phase noise flat across -40 C to +85 C ambient swings typical of outdoor radio units.
Recommandé
Broadcast Video Reference Clock Generation
In SDI, HDMI, and SMPTE 2022 broadcast video systems, the SI5341A-D07228-GM provides the 148.5 MHz and 148.35 MHz reference clocks required for 3G/HD/SD SDI serializers. Its 90 fs RMS phase jitter is well under the SMPTE 259/292/424 jitter masks, ensuring clean eye diagrams on long 75 ohm cable runs. The ten outputs simultaneously serve multiple video processors, audio clocks, and FPGA transceivers, reducing board area. Programmable output formats (LVDS, LVPECL, HCSL, LVCMOS) allow direct drive of diverse PHY inputs without level translators.
Recommandé
High-Speed ADC/DAC Sampling Clock
The SI5341A-D07228-GM drives the sampling clock inputs of JESD204B/C ADC and DAC converters where aperture-jitter directly limits SNR. With 90 fs RMS additive jitter, it adds negligible phase noise to converters such as 16-bit, 1 GSPS ADCs (preserving >75 dBFS SNR) and 14-bit, 2.5 GSPS DACs. Independent output dividers allow the same device to generate the JESD204B SYSREF pulse (e.g. 7.68 MHz) and the device clock (e.g. 245.76 MHz) with deterministic phase alignment, simplifying PCB layout and saving a dedicated SYSREF generator.
Recommandé
FPGA/ASIC Reference and Fabric Clocks
FPGA and ASIC designs require multiple independent clock domains: transceiver reference clocks (e.g. 156.25 MHz for 10G Ethernet), fabric clocks (e.g. 200 MHz), memory clocks (e.g. 266 MHz), and processor clocks. The SI5341A-D07228-GM provides ten independently programmable outputs from a single device, replacing a stack of fixed-frequency oscillators. The on-chip EEPROM enables standalone boot without a host controller, while the I2C/SPI interface allows post-boot dynamic frequency scaling for power-saving modes. Its 90 fs jitter keeps transceiver eye diagrams open at 25.78125 Gbps.
Recommandé
OTN/SONET/SDH Line Card Timing
Optical transport network line cards demand strict jitter compliance to ITU-T G.8251 and Telcordia GR-253. The SI5341A-D07228-GM provides the 155.52 MHz, 311.04 MHz, and 622.08 MHz rates required for OTU1/OTU2 with phase noise well inside the masks. Ten outputs serve line-side, client-side, and backplane SERDES simultaneously. Holdover and hitless reference switching capability allow the line card to ride through brief reference losses without resetting the PHY, which is critical for carrier-grade reliability.
Recommandé
Server and Storage Timing
In SATA/SAS/NVMe storage and PCIe Gen4/Gen5 server backplanes, the SI5341A-D07228-GM delivers the 100 MHz reference clocks required by PCIe, SATA, and SAS PHYs with sub-100 fs jitter that exceeds the PCIe CEM jitter tolerance. The 64-pin VFQFN package fits standard server PCB stack-ups, and its 1.8 V operation supports modern low-voltage server power rails. Multiple outputs allow a single device to clock a switch ASIC, multiple NVMe controllers, and a BMC, reducing component count.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour SI5341A-D07228-GM — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | SI5341A-D-GM | SI5341A-B-GM | SI5340A-D-GM | SI5341B-D-GM |
|---|---|---|---|---|---|
| Package | 64-pin VFQFN exposed pad | 64-pin VFQFN exposed pad - same | 64-pin VFQFN exposed pad - same | 64-pin VFQFN exposed pad - same | 64-pin VFQFN exposed pad - same |
| Brand | Skyworks | Skyworks | Skyworks | Skyworks | Skyworks |
| Output Jitter (RMS) | 90 fs | 90 fs | 130 fs (~30% higher) | 90 fs | 90 fs |
| Number of Outputs | 10 | 10 | 10 | 4 (-60%) | 10 |
| Maximum Output Frequency | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz | 1028 MHz |
| Supply Voltage | 1.71 V to 3.47 V | 1.71 V to 3.47 V | 1.71 V to 3.47 V | 1.71 V to 3.47 V | 1.71 V to 3.47 V |
| Pre-programmed Frequency Plan | Yes (D07228 code) | No (default) | No (default) | No (default) | No (default) |
| Silicon Revision | Rev A | Rev A | Rev A (B-grade) | Rev A | Rev B |
Principaux différenciateurs
- Pre-programmed factory frequency plan (vs SI5341A-D-GM)
- Lowest jitter in the Si5341 family (A grade) (vs SI5341A-B-GM)
- Ten fully independent programmable outputs (vs SI5340A-D-GM)
Notes de conception
Provide separate decoupling for VDDA (analog PLL supply) and VDDD/VVDD_DIG (digital core) on the SI5341A-D07228-GM. Place a 10 uF bulk plus 0.1 uF and 1 nF ceramic capacitors within 2 mm of each supply pin, with the 1 nF cap closest to the IC. Power the analog and digital domains from filtered LDO outputs to keep PLL phase noise within datasheet limits. Estimate: at 200 mA typical IDD, the device dissipates roughly 0.4 W on a 1.8 V supply, which is easily handled by the 64-pin QFN thermal pad.
The 64-pin VFQFN exposed pad is the primary thermal and ground return path. Place a continuous ground plane on the top layer under the package, with at least a 5 x 5 array of 0.3 mm thermal vias stitching the top pad to inner ground planes. Keep differential output traces length-matched to within 5 mil (0.13 mm) and impedance-controlled at 100 ohm differential (LVDS/HCSL) or 85 ohm differential (LVPECL). Reference Skyworks application note AN1173 for stack-up and via recommendations.
Route output clocks away from switching power converters and high-speed digital buses. Use guard traces or coplanar waveguide with ground stitching vias every 5 mm to contain radiated EMI. Place series termination resistors at the driver output (typically 33 ohm for LVDS, 220 ohm for LVPECL at the receiver). For multi-load LVCMOS clock trees, switch to lower-frequency outputs or a fanout buffer (e.g. SI5338 family) to avoid loading the Si5341A outputs beyond their 30 pF drive spec.
Do not skip the I2C/SPI address straps (CS and A0): the SI5341A powers up with default settings and requires a frequency plan to be loaded before outputs become valid. Hold RST low during power ramp until supplies stabilize. Avoid using both LVCMOS and differential outputs from the same bank simultaneously - they share VDDO rails and the voltage may need to match. Finally, regenerate the frequency plan with ClockBuilder Pro whenever the input reference frequency changes; field firmware edits to the header file are unsupported.
Informations de conformité
RoHS, REACH, and PFIS status confirmed on Skyworks product page (skyworksinc.com/en/products/timing/ultra-low-jitter-clock-generators/si5341a). Industrial -40 C to +85 C grade; not AEC-Q100 qualified.
