SI52112-B3ZM21

Overview

The SI52112-B3ZM21 is a PCIe Gen 1 and Gen 2 compliant dual-output clock generator manufactured by Skyworks Solutions. It sources two differential HCSL clocks from a 25 MHz crystal or clock input, supporting frequencies up to 100 MHz. The device operates on a 3.3 V supply with an extended temperature range of -40 °C to +85 °C. It features a 10-pin TDFN package (3x3 mm) assembled by UTAC. Key electrical parameters include a typical operating current of 17 mA, cycle-to-cycle jitter of 28 ps, and long-term accuracy of 250 ppm.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant dual-output clock generation
• Low power consumption with 17 mA typical operating current
• No termination resistors required for HCSL outputs
• Supports 25 MHz crystal or clock input

Applications

• Network Attached Storage
• Multi-function Printer
• Wireless Access Point
• Routers

Procurement Notes

Verify the ordering suffix ZM21 indicates assembly by UTAC. Confirm the package type is 10-pin TDFN. Ensure the specific variant does not require spread spectrum, as the B3 series lacks this feature. Check RoHS6 compliance status in official documentation.

Selection Notes

Select the SI52112-B3ZM21 for applications requiring PCIe Gen 1/2 timing without spread spectrum modulation. For designs needing spread spectrum, consider the SI52112-B4 series. Verify that the 10-pin TDFN footprint matches the PCB layout requirements.

Part Context

This component belongs to the Si52112-B3/B4 family of PCI-Express Gen 2 dual output clock generators. It is designed for consumer and embedded applications where small footprint and low power are critical. The B3 variant specifically excludes spread spectrum capabilities compared to the B4 variant.

Replacement Considerations

Public confirmed substitute part numbers: None.