SI52146-A01AGM

Overview

The Si52146-A01AGM is a six-output PCIe clock generator compliant with Gen 1, Gen 2, Gen 3, Gen 3 SRNS, and Gen 4 specifications. It sources clocks from a 25 MHz crystal or external input. The device provides low-power push-pull HCSL compatible differential outputs requiring no termination resistors. Operating voltage is 3.3 V (3.135–3.465 V), with dynamic supply current of 60 mA when all outputs are enabled. It supports I2C configuration, spread spectrum modulation for EMI reduction, and individual output enable control.

Feature Summary

• PCIe Gen 1 through Gen 4 common clock compliance
• Six differential HCSL-compatible outputs at 100 MHz
• I2C interface with readback capabilities
• Pin-selectable -0.5% triangular spread spectrum

Applications

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

Procurement Notes

Verify the ordering suffix AGM corresponds to the 32-pin QFN package and industrial temperature range (-40 to 85 °C). Confirm that the specific variant matches the required tape and reel or tray packaging format if applicable. Ensure compatibility with standard JEDEC reflow profiles during assembly.

Selection Notes

Select this component for designs requiring up to six synchronized PCIe clock outputs. Use the internal pull-up/pull-down resistors on OE and SSON pins to simplify circuit design. Calculate trim capacitors carefully to achieve zero ppm error with the recommended 25 MHz parallel resonance crystal.

Part Context

This part belongs to the Si52146 family of high-performance PCIe clock generators. The A01AGM designation specifies the industrial temperature grade and the 32-pin Quad Flat No-lead (QFN) package type. It serves as a central timing solution for multi-lane serial data interfaces in consumer and embedded systems.

Replacement Considerations

Public confirmed substitute part numbers: None.