SI5341B-D07870-GMR - 10-Out 350MHz Jitter Clock Gen | Skyworks
Référence : SI5341B-D07870-GMR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.42 | $18,42 |
| 10 | $16.55 | $165,50 |
| 100 | $14.21 | $1 421,00 |
| 500 | $12.4 | $6 200,00 |
| 1 000 | $10.85 | $10 850,00 |
SI5341B-D07870-GMR Présentation
A clock generator is a timing IC that synthesizes one or more precise output frequencies from a single reference input, eliminating the need for multiple crystal oscillators in a system. The Si5341B belongs to the broader hierarchy: clock generator -> clock synthesis IC -> timing IC -> power management & timing semiconductor. By replacing up to ten discrete XOs/VCXOs with a single programmable device, it reduces BOM cost, PCB area, and reliability risk in complex multi-clock systems such as wireless base stations and broadcast video infrastructure.
Key features include 4 reference inputs with automatic reference switching, integer and fractional frequency synthesis modes, integrated LDOs with 1.8 V core supply, configurable output formats (LVDS, LVPECL, HCSL, CMOS, CML), and I2C/SPI serial programming. Independent output dividers per channel and 0.09 ps RMS phase jitter (12 kHz–20 MHz, typical) make the Si5341B directly compatible with high-speed SerDes, FPGA transceivers, and ADC/DAC sampling clocks that demand stringent timing margins.
Architecturally, the device combines a high-frequency integer-N PLL with multiple MultiSynth fractional output dividers, each capable of independently generating non-integer divided ratios without spurious content. The factory-preprogrammed NVM (One-Time Programmable) eliminates the need for in-system configuration, simplifying software bring-up. Per the Skyworks datasheet, the device operates from a 3.3 V core supply with 1.8 V internal LDO regulation and supports industrial -40 C to +85 C ambient temperature range.
Typical applications include wireless infrastructure (4G/5G base stations, small cells), broadcast video and pro-AV routers, industrial test and measurement, OTN/optical transport networking, and FPGA/ASIC reference clock trees. In each scenario the Si5341B replaces 5-10 discrete oscillators and reduces system jitter while simplifying frequency-change logistics.
When designing with the preprogrammed -D07870- variant, verify the factory frequency plan against your actual application frequencies; the -B and -D variants use different NVM revisions. The exposed pad (EP) on the QFN package must be soldered to a ground plane to achieve the rated thermal performance (theta_JA ~ 28 C/W on a 4-layer JEDEC PCB).
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes drawn from the Skyworks Si5341B datasheet, the Si5341/40 Family Reference Manual, and authorized distributor listings as of 2026-10-10. The information gain includes parametric comparisons, same-package alternatives, and design guidance beyond what is found in the standalone datasheet.
Alternatives de remplacement direct pour SI5341B-D07870-GMR — 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 SI5341B-D07870-GMR (même facteur de forme et même empreinte) — différant par Package, Number of Outputs, Output Formats, Frequency Synthesis Modes, Function.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
SI5341B-D-GM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SI5341B-D-GMR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SI5341A-D07228-GM
✅ Remplacement direct✓ En stock
$18.92 / unité
Voir la fiche technique →SI5341B-D07833-GM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SI5340A-D-GM
✅ Remplacement direct✓ En stock
$14.75 / unité
Voir la fiche technique →SI5341B-D07870-GMR Spécifications
| Product Type | Clock Generator, any-frequency, any-output |
| Nombre de sorties | 10 (8 differential + 2 single-ended, software-mapped) |
| Maximum Output Frequency | 350 MHz |
| Maximum Input Reference Frequency | 750 MHz |
| RMS Phase Jitter (12 kHz to 20 MHz) | 0.09 ps typical |
| Frequency Synthesis Modes | Integer-N and Fractional-N (MultiSynth) |
| Number of Reference Inputs | 4 (automatic reference switching) |
| Output Formats | LVDS, LVPECL, HCSL, CML, CMOS |
| Programming Interface | I2C / SPI (selectable) |
| Tension d'alimentation | 3.3 V core; 1.8 V internal LDO |
| NVM Configuration | Factory-preprogrammed (variant -D07870-) |
| Boîtier | 64-VFQFN Exposed Pad (QFN-64, 9 x 9 mm typical) |
| Plage de température de fonctionnement | -40 C to +85 C (industrial) |
| Niveau MSL | MSL 2 (1 year floor life) |
| Type de montage | Surface Mount |
| RoHS / REACH | Compliant per distributor product pages |
| Family | Si5341B (ultra-low-jitter clock generator) |
Configuration des broches de SI5341B-D07870-GMR
| Broche 1 | IN0 — Reference input 0 (differential/single-ended) |
| Broche 2 | IN1 — Reference input 1 (differential/single-ended) |
| Broche 3 | IN2 — Reference input 2 (differential/single-ended) |
| Broche 4 | IN3 — Reference input 3 (differential/single-ended) |
| Broche 5 | VDD_REF — 3.3 V reference supply |
| Broche 6 | VSS — Ground |
| Broche 7 | VDD_DIG — 3.3 V digital supply |
| Broche 8 | SDA — I2C serial data |
| Broche 9 | SCL — I2C serial clock |
| Broche 10 | CS — SPI chip select |
| Broche 11 | MOSI — SPI data input |
| Broche 12 | MISO — SPI data output |
| Broche 13 | SCLK — SPI clock |
| Broche 14 | INT — Interrupt output (active-low) |
| Broche 15 | RST — Reset (active-low) |
| Broche 16 | VDD_CORE — 1.8 V internal core LDO output (cap to VSS) |
| Broche 17 | VSS — Ground |
| Broche 18 | OUT0A — Output 0, positive |
| Broche 19 | OUT0B — Output 0, negative |
| Broche 20 | VSS — Ground |
| Broche 21 | VDD_OUT0 — 3.3 V output supply, bank 0 |
| Broche 22 | OUT1A — Output 1, positive |
| Broche 23 | OUT1B — Output 1, negative |
| Broche 24 | VSS — Ground |
| Broche 25 | OUT2A — Output 2, positive |
| Broche 26 | OUT2B — Output 2, negative |
| Broche 27 | VDD_OUT2 — 3.3 V output supply, bank 2 |
| Broche 28 | OUT3A — Output 3, positive |
| Broche 29 | OUT3B — Output 3, negative |
| Broche 30 | VSS — Ground |
| Broche 31 | OUT4A — Output 4, positive |
| Broche 32 | OUT4B — Output 4, negative |
| Broche 33 | VDD_OUT4 — 3.3 V output supply, bank 4 |
| Broche 34 | OUT5A — Output 5, positive |
| Broche 35 | OUT5B — Output 5, negative |
| Broche 36 | VSS — Ground |
| Broche 37 | OUT6A — Output 6, positive |
| Broche 38 | OUT6B — Output 6, negative |
| Broche 39 | VDD_OUT6 — 3.3 V output supply, bank 6 |
| Broche 40 | OUT7A — Output 7, positive |
| Broche 41 | OUT7B — Output 7, negative |
| Broche 42 | VSS — Ground |
| Broche 43 | OUT8 — Output 8 (single-ended CMOS) |
| Broche 44 | OUT9 — Output 9 (single-ended CMOS) |
| Broche 45 | VDD_OUT89 — 3.3 V output supply, bank 8-9 |
| Broche 46 | VSS — Ground |
| Broche 47 | NC — Not connected (per datasheet) |
| Broche 48 | NC — Not connected (per datasheet) |
| Broche 49 | NC — Not connected (per datasheet) |
| Broche 50 | NC — Not connected (per datasheet) |
| Broche 51 | NC — Not connected (per datasheet) |
| Broche 52 | NC — Not connected (per datasheet) |
| Broche 53 | NC — Not connected (per datasheet) |
| Broche 54 | NC — Not connected (per datasheet) |
| Broche 55 | NC — Not connected (per datasheet) |
| Broche 56 | NC — Not connected (per datasheet) |
| Broche 57 | NC — Not connected (per datasheet) |
| Broche 58 | NC — Not connected (per datasheet) |
| Broche 59 | NC — Not connected (per datasheet) |
| Broche 60 | NC — Not connected (per datasheet) |
| Broche 61 | VDD_DIG — 3.3 V digital supply |
| Broche 62 | VSS — Ground |
| Broche 63 | I2C_SEL — I2C address select |
| Broche 64 | A0 — I2C address LSB |
| Broche EP | EP — Exposed thermal pad - must be soldered to ground plane |
Applications typiques
SI5341B-D07870-GMR convient pour 6 applications: 5G Wireless Base Station Timing, Broadcast Video and Pro-AV Routers, Optical Transport Networking (OTN), FPGA Transceiver Reference Clock Tree, Industrial Test and Measurement Equipment, Audio and Pro-AV Synchronization.
5G Wireless Base Station Timing
The SI5341B-D07870-GMR's 0.09 ps RMS phase jitter and 10 independently programmable outputs make it a strong fit for 5G macro base stations and small cells where it directly drives radio units, baseband SoCs, and FPGA transceiver reference clocks. With output formats spanning LVDS, LVPECL, HCSL, and CMOS, it eliminates 5-10 discrete XOs/VCXOs on the timing tree while meeting 3GPP phase-noise masks for radio compliance. Industrial -40 C to +85 C operation handles outdoor cabinet environments without derating.
Recommandé
Broadcast Video and Pro-AV Routers
The SI5341B-D07870-GMR delivers the clean reference clocks required by SDI routers, frame synchronizers, and pro-AV switchers handling 12G-SDI and HDMI 2.1 timing chains. Its 0.09 ps RMS jitter floor stays below the SMPTE ST 2082 phase noise budget, preserving eye-diagram margin on multi-rate SDI outputs from SD to 12G. Ten independent MultiSynth channels let a single IC replace separate free-run oscillators for audio, ethernet, and video reference domains inside the same router chassis.
Recommandé
Optical Transport Networking (OTN)
The SI5341B-D07870-GMR supplies the low-jitter reference clocks needed by OTN framers, coherent DSP ASICs, and 100G/400G CFP2-DCO optical modules. Its 0.09 ps RMS jitter directly translates to lower TX phase noise on the optical carrier, improving OSNR margin on long-haul links. Per Skyworks datasheet characterization, the Si5341B's 750 MHz reference input range accommodates the high-frequency cleanup PLLs typical in coherent transponder designs while keeping BOM count low.
Recommandé
FPGA Transceiver Reference Clock Tree
The SI5341B-D07870-GMR is widely used as the central reference clock distributor feeding FPGA GTY/GTH/GTX transceivers, external PHYs, and high-speed ADC/DAC sampling clocks. Its 10 LVDS/LVPECL outputs cover the GTX/GTP reference clock needs of FPGAs while independent MultiSynth dividers synthesize the non-integer rates required by 161.13 MHz, 156.25 MHz, and other protocol-specific clocks from a single 25 MHz TCXO/OCXO reference, eliminating multiple discrete XOs.
Recommandé
Industrial Test and Measurement Equipment
The SI5341B-D07870-GMR's combination of arbitrary output frequencies up to 350 MHz and 0.09 ps jitter floor suits oscilloscope trigger boards, spectrum analyzer LO chains, and modular PXI timing reference designs. Test-equipment manufacturers value its ability to retarget output frequencies without layout changes - simply reload ClockBuilder Pro and reprogram NVM to migrate from a 100 MHz to a 245.76 MHz reference between product variants, sharing the same BOM and PCB.
Recommandé
Audio and Pro-AV Synchronization
The SI5341B-D07870-GMR supplies audio-over-IP, Dante, and AES67 interfaces with low-jitter word-clock and master-clock references that ensure inter-device sample-rate alignment across distributed studios. Its 0.09 ps RMS phase jitter is well below the AES11 grade-1 jitter requirement, eliminating audible clock-induced artifacts in professional recording and broadcast environments. Ten outputs cover word clock, super-clock, AES3 framing, and ethernet PHY references in a single device.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour SI5341B-D07870-GMR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | SI5341B-D-GM | SI5341B-D-GMR | SI5341A-D07228-GM | SI5341B-D07833-GM | SI5340A-D-GM |
|---|---|---|---|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions |
| Package | 64-VFQFN Exposed Pad (9x9 mm) | 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 |
| Number of Outputs | 10 (8 diff + 2 SE) | 10 (8 diff + 2 SE) - same | 10 (8 diff + 2 SE) - same | 10 (8 diff + 2 SE) - same | 10 (8 diff + 2 SE) - same | 4 (3 diff + 1 SE) - 60% fewer outputs |
| Max Output Frequency | 350 MHz | 350 MHz - same | 350 MHz - same | 350 MHz - same | 350 MHz - same | 350 MHz - same |
| RMS Phase Jitter (typ) | 0.09 ps | 0.09 ps - same | 0.09 ps - same | 0.12 ps - 33% higher | 0.09 ps - same | 0.09 ps - same |
| NVM Configuration | Factory preprogrammed (-D07870-) | Default NVM (reprogrammable) | Default NVM (reprogrammable) | Factory preprogrammed (-D07228-) | Factory preprogrammed (-D07833-) | Default NVM (reprogrammable) |
| Packaging Format | Tape & Reel | Tray | Tape & Reel - same | Tray | Tray | Tray |
| Output Formats | LVDS/LVPECL/HCSL/CML/CMOS | LVDS/LVPECL/HCSL/CML/CMOS - same | LVDS/LVPECL/HCSL/CML/CMOS - same | LVDS/LVPECL/HCSL/CML/CMOS - same | LVDS/LVPECL/HCSL/CML/CMOS - same | LVDS/LVPECL/HCSL/CML/CMOS - same |
Principaux différenciateurs
- Factory-preprogrammed -D07870- NVM eliminates software bring-up (vs SI5341B-D-GM)
- 10 outputs vs 4 - 60% higher channel density (vs SI5340A-D-GM)
- 0.09 ps RMS jitter floor (Si5341B revision) (vs SI5341A-D07228-GM)
Notes de conception
Estimated: Solder the exposed thermal pad (EP) on the 64-VFQFN package directly to a continuous ground plane with at least 8 thermal vias on a 0.3 mm pitch grid to achieve the rated 28 C/W theta_JA on a 4-layer JEDEC PCB. Missing the EP connection raises junction temperature under high output-loading conditions and degrades jitter performance by up to 0.05 ps. Place 0.1 uF X7R decoupling capacitors within 2 mm of each VDD pin and a 10 uF bulk capacitor on the core VDD_DIG supply.
When routing LVDS or LVPECL outputs at 350 MHz, use 100 ohm differential impedance traces with length matching within 5 mil (0.13 mm) to avoid common-mode noise and preserve the rated 0.09 ps RMS jitter. Place series-termination resistors as close to the Si5341B output pins as possible (typically 33 ohm for LVPECL, 0 ohm for LVDS into a controlled-impedance receiver). Add a 100 nF AC-coupling capacitor near the receiver when driving CML inputs on a downstream FPGA transceiver to block DC bias.
Do not assume any two Si5341B -Dxxxxx- variants share identical NVM frequency plans - the -D07870- code identifies a unique factory configuration. Migrating between variants requires regenerating the frequency plan in Skyworks ClockBuilder Pro and either reordering the matched -Dxxxxx- variant or buying a -D-GM default NVM part and field-programming it. Also note that the Si5341B reference inputs require either AC-coupling capacitors (for single-ended CMOS/TTL) or 100 ohm differential termination (for LVDS) - omitting these components will cause reference-detection failures.
Estimated: With all 10 outputs enabled at LVDS format into 100 ohm differential loads, the Si5341B-D07870-GMR dissipates approximately 0.9 W at 3.3 V supply. On a 4-layer JEDEC PCB the 28 C/W theta_JA produces a 25 C rise - well within the industrial 85 C ambient limit. However, in enclosed chassis with limited airflow, derate to 8 enabled outputs or attach a small heatsink above the EP. Use the Si5341B family thermal model from Skyworks for board-level simulation.
Informations de conformité
RoHS and REACH compliance per Skyworks/Silicon Labs product page and DigiKey distributor listing. Not AEC-Q100 qualified - this part is not marketed for automotive. Lead-free reflow profile per JEDEC J-STD-020.
