Overview
Description
The 9SQ445 is a CK440Q Lite clock synthesizer for newer Intel-based server platforms. The 9SQ445 is a single-chip, PCIe Gen6 compliant device. It is designed to work as a complete clock solution, or in combination, with DB2000Q-compliant or other clock buffers to provide point-to-point clocks to multiple receiving agents.
Features
- PCIe Gen5 phase jitter < 50fs rms
- PCIe Gen6 phase jitter < 40fs rms
- 3.3V operation
- Three 100MHz dedicated output pairs with individual OE# pins
- Two MXCLK output pairs multiplexable between 100MHz and 25MHz
- One 25MHz dedicated output pair
- 85Ω differential Low-Power HCSL (LP-HCSL) outputs eliminate 24 resistors, saving 39mm2 of area
- Three selectable SMBus addresses
- Supports 0%, -0.3% and -0.5% spread-spectrum amounts
- Side-Band Interface allows real-time hardware control of all output enables
- 5 × 5 mm, 40-VFQFPN
- -40°C to +85°C operating temperature range
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
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Videos & Training
Comparing PCI Express Gen3-7 Jitter Filters to a 12k-20M Jitter Filter
A brief comparison of PCI Express (PCIe) Gen3-7 common clock jitter filters vs. a typical 12k to 20MHz plot. Presented by Ron Wade, System Architect at Renesas.
For more information, visit the PCI Express Clocks page.
Video List
News & Blog Posts
| Solving Common Issues with Respect to PCIe Timing Design on the Modern Server System | Blog Post | Apr 14, 2022 |
| Future-proof Your PCIe® Designs | Blog Post | Mar 29, 2022 |
| Renesas Expands Data Center Solutions Portfolio with Industry’s First CK440Q-Compliant Clock Generator for PCIe Gen5 and Beyond | News | Feb 4, 2021 |
| Comparing and Contrasting PCIe and Ethernet Clock Jitter Specifications | Blog Post | May 22, 2018 |
| IDT Extends Leadership in Datacenter and Networking Systems with Launch of Its Latest PCI Express Timing Devices | News | Apr 30, 2018 |