SI52147-A01AGM

Overview

The SI52147-A01AGM is a nine-output PCIe clock generator from Skyworks Solutions, designed for Gen 1, Gen 2, Gen 3, and Gen 4 common clock compliance. It sources clocks from a 25 MHz crystal or input, featuring low-power push-pull HCSL differential outputs without termination resistors. Key electrical parameters include a 3.3 V supply (3.135–3.465 V), 85 mA dynamic current, and -40 to +85 °C operating range. The device supports I2C control, spread spectrum modulation, and individual output enable pins in a 48-pin QFN package.

Feature Summary

• Nine differential HCSL outputs compliant with PCIe Gen 1/2/3/4 common clock specifications
• Supports 25 MHz crystal or clock input with triangular spread spectrum for EMI reduction
• I2C interface with readback capabilities and hardware output enable pins
• Low power consumption of 85 mA with no external termination resistors required

Applications

• Network attached storage
• Multi-function printer
• Wireless access point
• Servers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation. The 'GM' suffix indicates a tray package, while 'GMR' denotes tape and reel. Confirm that the industrial temperature grade (-40 to +85 °C) matches the design requirements. Ensure the 48-pin QFN land pattern adheres to IPC-7351 guidelines for proper assembly.

Selection Notes

Select this component when nine synchronized PCIe clocks are required from a single source. It is suitable for designs needing Gen 4 compliance or SRNS support. Verify that the system can accommodate the 3.3 V supply voltage and 85 mA current draw. Consider the 48-pin QFN footprint constraints during PCB layout planning.

Part Context

The SI52147 belongs to the Si52147 family of high-performance PCIe clock generators. It is part of Skyworks' portfolio for consumer and embedded applications requiring precise clock distribution. The device integrates a PLL and control RAM for flexible configuration via I2C or hardware pins.

Replacement Considerations

The SI52147-A01AGMR is the tape-and-reel version of the same functional device. Other family members like the SI52144 (4-output) or SI52146 (6-output) offer fewer outputs but share similar interfaces and pinouts.