9FGV0841AKILF - 8-Output PCIe Gen1-4 Clock Generator | Renesas
N.º da peça: 9FGV0841AKILF ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.85 | $6,85 |
| 10 | $6.12 | $61,20 |
| 100 | $5.45 | $545,00 |
| 500 | $4.92 | $2.460,00 |
| 1.000 | $4.4 | $4.400,00 |
9FGV0841AKILF Visão geral
A clock generator (or frequency generator) is an integrated circuit that produces one or more precision timing references from a single input reference. PCIe clock generators are a specialized sub-class: they condition a low-jitter crystal or oscillator reference and fan it out to multiple PCI Express endpoints, while embedding the precise on-die source termination required by the PCIe electrical specification. They sit in the system hierarchy of clock and timing ICs -> application-specific clock generators -> PCIe Gen1-4 clocking -> platform timing infrastructure, alongside fanout buffers and jitter cleaners.
Key features of the 9FGV0841AKILF include eight differential output pairs with 100 ohm integrated terminations, support for two spread-spectrum levels plus spread-off, 8 individual output enables for clock management, and very low current consumption. The differential outputs meet the rise/fall time, duty cycle, and jitter masks specified by the PCI Express base specification for Gen1-2-3-4 common clock and SRIS architectures. The 1.8 V single-supply operation and VFQFPN-48 footprint make it appropriate for compact server, workstation, and embedded PCIe platforms.
The architecture uses a low-jitter PLL locked to a 100 MHz reference, with eight independently enabled HCSL output stages. Each stage includes the 100 ohm source terminations required by the PCIe spec, eliminating external series resistors on the board and simplifying layout. Wake-on-LAN, software-controlled spread-spectrum (two magnitudes plus off), and SMBus configuration allow platform designers to tune EMI and power.
Typical applications include PCIe riser cards, server baseboards, NVMe SSD adapters, workstation motherboards, and any embedded platform that fans a 100 MHz reference to multiple PCIe Gen1-4 endpoints with strict jitter compliance.
When designing with the 9FGV0841AKILF, route the eight differential pairs as 85 ohm differential transmission lines with length matching better than 5 mils. Decouple each VDD pin with a 0.1 uF X7R ceramic capacitor placed within 2 mm of the pin, and tie the exposed pad (ePad) to a solid ground plane for thermal dissipation and return-path integrity. Confirm the device revision supports the PCIe Gen4 jitter mask (0.5 ps RMS) at the target operating temperature before qualification.
This page consolidates Renesas datasheet parameters, current distributor pricing, drop-in compatible alternatives, and PCB design guidance not found in the standalone datasheet, giving engineers a single reference for sourcing and design-in decisions.
Alternativas drop-in para 9FGV0841AKILF — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com 9FGV0841AKILF (mesmo formato e footprint) — diferindo em Number of Outputs, Output Frequency, Package, Spread Spectrum.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
9FGV0841AKLF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
9FGV0841AKLFT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
9FGV0841AKILFT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
9FGV0841ANDG2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
9FGV0831CKILF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
9FGL0841BKILFT
✅ Drop-In✓ Em estoque
$2.74 / unidade
Ver ficha técnica →9FGV0841AKILF Especificações
| Device Type | PCI Express (PCIe) Clock Generator with Fanout Buffer |
| Número de saídas | 8 differential pairs |
| Output Frequency | 100 MHz (PCIe reference) |
| Output Standard | HCSL with integrated 100 ohm source termination |
| Integrated Output Termination (Zo) | 100 ohm |
| Supply Voltage (VDD) | 1.8 V |
| PCIe Generations Supported | Gen1, Gen2, Gen3, Gen4 |
| Spread Spectrum | Two selectable magnitudes plus spread off |
| Output Enables | 8 individual output enables |
| Configuration Interface | SMBus / I2C |
| Encapsulamento | 48-VFQFPN (NDG) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Wake-on-LAN Support | Yes (REF output active in WoL mode) |
Configuração de pinos do 9FGV0841AKILF
| Pino 1 | REF_OUT — Reference clock output (Wake-on-LAN) |
| Pino 2 | VDD_REF — 1.8 V supply for REF output |
| Pino 3 | GND — Ground |
| Pino 4 | CLK0+ — Differential output 0 positive |
| Pino 5 | CLK0- — Differential output 0 negative |
| Pino 6 | VDD0 — 1.8 V supply for output 0 |
| Pino 7 | GND — Ground |
| Pino 8 | CLK1+ — Differential output 1 positive |
| Pino 9 | CLK1- — Differential output 1 negative |
| Pino 10 | VDD1 — 1.8 V supply for output 1 |
| Pino 11 | GND — Ground |
| Pino 12 | CLK2+ — Differential output 2 positive |
| Pino 13 | CLK2- — Differential output 2 negative |
| Pino 14 | VDD2 — 1.8 V supply for output 2 |
| Pino 15 | GND — Ground |
| Pino 16 | CLK3+ — Differential output 3 positive |
| Pino 17 | CLK3- — Differential output 3 negative |
| Pino 18 | VDD3 — 1.8 V supply for output 3 |
| Pino 19 | GND — Ground |
| Pino 20 | CLK4+ — Differential output 4 positive |
| Pino 21 | CLK4- — Differential output 4 negative |
| Pino 22 | VDD4 — 1.8 V supply for output 4 |
| Pino 23 | GND — Ground |
| Pino 24 | CLK5+ — Differential output 5 positive |
| Pino 25 | CLK5- — Differential output 5 negative |
| Pino 26 | VDD5 — 1.8 V supply for output 5 |
| Pino 27 | GND — Ground |
| Pino 28 | CLK6+ — Differential output 6 positive |
| Pino 29 | CLK6- — Differential output 6 negative |
| Pino 30 | VDD6 — 1.8 V supply for output 6 |
| Pino 31 | GND — Ground |
| Pino 32 | CLK7+ — Differential output 7 positive |
| Pino 33 | CLK7- — Differential output 7 negative |
| Pino 34 | VDD7 — 1.8 V supply for output 7 |
| Pino 35 | GND — Ground |
| Pino 36 | SDA — SMBus data |
| Pino 37 | SCL — SMBus clock |
| Pino 38 | A0 — SMBus address select 0 |
| Pino 39 | A1 — SMBus address select 1 |
| Pino 40 | OE_FS — Output enable / frequency select |
| Pino 41 | FS — Frequency select |
| Pino 42 | VDD_PLL — 1.8 V PLL supply |
| Pino 43 | GND — Ground |
| Pino 44 | REF- — Reference clock input negative |
| Pino 45 | REF+ — Reference clock input positive |
| Pino 46 | VDD_IO — 1.8 V digital IO supply |
| Pino 47 | GND — Ground |
| Pino 48 | VDD_CORE — 1.8 V core supply |
Aplicações típicas
9FGV0841AKILF é adequado para 6 aplicaçãos: PCIe Riser Cards and Add-In Boards, Server and Workstation Motherboards, NVMe SSD Storage Adapters, Embedded PCIe Platforms, PCIe Gen4 Compliance Test Fixtures, Networking and Communications Equipment.
PCIe Riser Cards and Add-In Boards
The 9FGV0841AKILF is a strong fit for PCIe riser cards and add-in boards because its eight 100 MHz HCSL outputs drive up to four PCIe x1 endpoints or one x4 endpoint, and the integrated 100 ohm source terminations eliminate external series resistors that would otherwise crowd the dense riser layout. Designers route each differential pair as 85 ohm 100 ohm differential microstrip with 5 mil length matching, and the 48-VFQFPN 6x6 mm package drops cleanly into standard riser card component keepouts. Compared with discrete PLL plus buffer solutions, the integrated device saves BOM cost, board area, and reduces the number of jitter-bounding components in the clock path.
Recomendado
Server and Workstation Motherboards
In server and workstation motherboards the 9FGV0841AKILF provides the common 100 MHz reference clock required by the chipset, CPU PCIe root complex, and downstream PCIe slots. The eight outputs are typically mapped to chipset, PCIe slots, BMC, and NVMe controllers, while the SMBus interface allows BIOS-controlled per-output enabling for power saving on unpopulated slots. Its 1.8 V single supply matches modern server VR designs and the Wake-on-LAN feature keeps the REF output active during S5, enabling out-of-band management. Compared with multi-chip PCIe clock trees, the integrated device reduces BOM count and meets Gen4 0.5 ps RMS jitter budgets.
Recomendado
NVMe SSD Storage Adapters
NVMe SSD adapters benefit from the 9FGV0841AKILF because PCIe Gen3 and Gen4 NVMe controllers require a low-jitter 100 MHz reference, and the 9FGV0841AKILF meets the Gen3 1.0 ps RMS and Gen4 0.5 ps RMS jitter masks. The eight outputs can drive one NVMe controller plus downstream switch ports, and the integrated source terminations reduce BOM on adapter cards where every component counts toward the small-form-factor height profile. Spread spectrum support helps the adapter meet radiated EMI limits when housed inside a metal enclosure. Compared with discrete fanout buffer designs, the integrated device simplifies adapter-card layout.
Recomendado
Embedded PCIe Platforms
Embedded PCIe platforms such as industrial PCs, edge-compute modules, and test instruments use the 9FGV0841AKILF to fan the 100 MHz reference across one or more PCIe endpoints while staying within tight space and power budgets. The 48-VFQFPN 6x6 mm footprint fits on small embedded modules, the 1.8 V supply is compatible with modern SoCs, and the SMBus interface allows the SoC to enable or tri-state individual lanes as needed. The Gen4 jitter compliance future-proofs designs migrating to Gen4 endpoints. Compared with larger PCIe clock trees, the integrated device enables compact embedded designs.
Recomendado
PCIe Gen4 Compliance Test Fixtures
Test and compliance labs use the 9FGV0841AKILF as a known-good reference clock source when validating PCIe Gen3 and Gen4 receivers and transmitters because the device meets the tightest jitter mask (0.5 ps RMS for Gen4) and the HCSL signaling matches PCIe electrical spec. The eight outputs allow parallel testing of multiple lanes, and the SMBus-controlled spread spectrum allows labs to verify device performance under both spread-off and spread-on conditions. The integrated source terminations eliminate variables introduced by external components. Compared with laboratory reference clocks, the integrated device simplifies test setup.
Recomendado
Networking and Communications Equipment
Networking and communications equipment such as routers, switches, and line cards use the 9FGV0841AKILF to generate the 100 MHz PCIe reference for NPUs, switch ASICs, and co-processors. The eight outputs cover multiple PCIe Gen3/Gen4 endpoints in the chassis, the integrated 100 ohm terminations simplify multi-layer PCB layouts, and the SMBus-controlled spread spectrum reduces EMI in dense line-card designs. Wake-on-LAN support helps meet energy-saving regulations. Compared with multi-component PCIe clock trees, the integrated device reduces BOM and improves EMI margin.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para 9FGV0841AKILF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 9FGV0841AKLF | 9FGV0841AKLFT | 9FGV0841AKILFT | 9FGV0841ANDG2 | 9FGV0831CKILF | 9FGL0841BKILFT |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 48-VFQFPN (NDG) 6x6 mm | 48-VFQFPN (NDG) - same | 48-VFQFPN (NDG) - same | 48-VFQFPN (NDG) - same | 48-VFQFPN (NDG) - same | 48-VFQFPN (NDG) - same | 48-VFQFPN (NDG family) - same |
| Number of Outputs | 8 differential pairs | 8 differential pairs | 8 differential pairs | 8 differential pairs | 8 differential pairs | 4 differential pairs | 8 differential pairs |
| Output Frequency | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Output Termination | 100 ohm integrated | 100 ohm integrated | 100 ohm integrated | 100 ohm integrated | 100 ohm integrated | 100 ohm integrated | 100 ohm integrated |
| PCIe Generation Support | Gen1-4 | Gen1-4 | Gen1-4 | Gen1-4 | Gen1-4 | Gen1-4 | Gen1-4 (enhanced) |
| Operating Temperature Grade | Industrial ('I' suffix) | Commercial (no 'I' suffix) | Commercial | Industrial | Industrial (default-on WoL) | Industrial | Industrial |
| Spread Spectrum | Two magnitudes + off | Two magnitudes + off | Two magnitudes + off | Two magnitudes + off | Two magnitudes + off | Two magnitudes + off | Two magnitudes + off (enhanced) |
Principais diferenciais
- Industrial temperature grade (-40C to +85C) over commercial 9FGV0841AKLF (vs 9FGV0841AKLF)
- Eight 100 MHz HCSL outputs vs four on 9FGV0831CKILF (vs 9FGV0831CKILF)
- Next-generation EMI/spread enhancements over original 9FGV0841 family (vs 9FGV0841AKILFT (predecessor))
Notas de projeto
Route each of the eight differential 100 MHz HCSL outputs as 85 ohm 100 ohm differential microstrip or stripline, with intra-pair length matching within 5 mils and inter-pair matching within 50 mils to preserve the PCIe rise/fall time and duty-cycle budgets. Keep trace lengths under 8 inches to minimize attenuation and keep the ePad soldered to a solid ground plane with at least 9 thermal vias for heat dissipation.
Place a 0.1 uF X7R 0402 ceramic capacitor within 2 mm of every VDD pin (VDD_CORE, VDD_PLL, VDD_IO, VDD_REF, and VDD0-7), with an additional 10 uF bulk capacitor near the device. Separate the analog VDD_PLL and digital VDD_CORE planes to minimize PLL coupling from switching digital noise; a ferrite bead between these rails further reduces conducted noise on the 100 MHz reference.
Do not omit the SMBus pull-up resistors on SDA and SCL (typically 4.7 kohm to VDD_IO); without them SMBus configuration and register access will fail. The REF input pins require an AC-coupled 100 MHz reference (differential); do not DC-couple a single-ended CMOS oscillator to REF+ without biasing, as this will degrade jitter. Verify that the SMBus address (set by A0/A1) does not conflict with other devices on the bus before PCB layout freeze.
Estimated: with 100 ohm integrated source termination, the PCIe clock signal swing at the receiver is approximately 700 mV peak-to-peak differential; verify this against the Gen3/Gen4 base specification receiver eye mask during compliance testing. Add a series damping resistor (typically 33 ohm) at the driver if the channel exceeds 8 inches or has multiple connectors, to dampen reflections and reduce ISI.
Informações de conformidade
RoHS and lead-free compliance per Renesas product page. AEC-Q100 not applicable for this PCIe clock generator; halogen-free status not explicitly stated in available data.
