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Product Detailed Parameters
- Description：IC CLOCK BUFFER QFN
- Series：*
- PLL：-
- Mfr：Skyworks Solutions Inc.
- Main Purpose：-
- Input：-
- Output：-
- Number of Circuits：-
- Ratio - Input:Output：-
- Differential - Input:Output：-
- Frequency - Max：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The Skyworks Si53208-A02AGM is an 8-output PCIe clock fanout buffer supporting Gen 1 through Gen 6 specifications. It operates on a single 1.5 V to 1.8 V supply and accepts input frequencies from 10 MHz to 200 MHz. The device provides low-power, push-pull HCSL-compatible differential outputs with internal 100 Ω or 85 Ω impedance matching. Key electrical parameters include a maximum additive jitter of 0.02 ps rms for Gen 6 compliance and a typical dynamic supply current of 42 mA at 1.5 V. It is housed in a compact 48-pin QFN (6 x 6 mm) package.
Feature Summary
- 8-output 100 MHz PCIe Gen 1–Gen 6 compliant clock fanout buffer
- Low additive jitter: 0.02 ps rms max for Gen 6 specifications
- Individual hardware control pins and I2C controls for Output Enable
- Internal 100 Ω or 85 Ω output impedance matching
Applications
- Data centers
- Servers
- Storage systems
- PCIe add-on cards
- Communications equipment
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm pin compatibility and termination settings. Confirm RoHS-6 compliance status and lead frame revisions via Product Change Notifications before finalizing procurement plans.
Selection Notes
Select this component when eight differential clock outputs are required for PCIe Gen 1 through Gen 6 designs. Ensure the design supports the 1.5 V to 1.8 V operating voltage range and utilizes the 48-pin QFN footprint. Verify that the application requires spread spectrum tolerance and adjustable slew rate capabilities.
Part Context
This part belongs to the Si532xx family, which includes the Si53212 (12-output) and Si53204 (4-output). All variants share identical core performance characteristics, including jitter specifications and power supply requirements, differing primarily in output count and package size.
Replacement Considerations
Si53212-A02AGM (12-output variant)
FAQ
Does the Si53208 support spread spectrum clocking?
Yes, the device is spread spectrum tolerant and can pass through a spread input clock for EMI reduction.
What is the maximum additive jitter specification?
The maximum additive jitter is 0.02 ps rms, which meets PCIe Gen 6 specifications.
How are unused outputs disabled?
Unused outputs can be disabled using individual hardware control pins or via I2C commands to save power.
