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Si52112-B4-GM2R

Si52112-B4-GM2R

MPN: SI52112-B4-GM2R
Skyworks Solutions Inc.
PCI Express (PCIe) IC 100MHz 1 Output 10-TDFN (3x3)
Active3,355 in stock
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Overview

The Si52112-B4-GM2R is a high-performance PCIe clock generator designed for applications requiring Gen 1 and Gen 2 compliance. It features a 1:2 ratio, providing two HCSL differential outputs from a single 25 MHz crystal or clock input. This specific B4 variant includes a 0.5 percent down-spread spectrum profile to minimize electromagnetic interference (EMI) in sensitive digital systems.

Why Choose This Part

This IC eliminates the need for external termination resistors, significantly reducing the bill of materials and PCB footprint in space-constrained designs. It operates with a low run current of 17mA and includes a triangular spread spectrum profile for maximum EMI reduction.

Applications

PCIe Gen 1/2 Clocking
Providing stable 100 MHz reference clocks for network switches, storage arrays, and server motherboards.
SATA Storage Interfaces
Supplying the necessary 100 MHz timing for Serial-ATA controllers and storage bridge chips.
EMI-Sensitive Computing
Utilizing integrated spread spectrum modulation to reduce peak radiated noise in high-density industrial computers.

Key Specifications

PLL Yes
Input Clock, Crystal
Output HCSL
Main Purpose PCI Express (PCIe)
Mounting Type Surface Mount
Package / Case 10-WFDFN Exposed Pad
Frequency - Max 100MHz
Voltage - Supply 2.97V ~ 3.63V
Number of Circuits 1
Ratio - Input:Output 1:2
Operating Temperature -40degC ~ 85degC
Supplier Device Package 10-TDFN (3x3)
Differential - Input:Output No/Yes

Getting Started

To evaluate this device, ensure your PCB layout follows HCSL differential routing guidelines with 50-ohm single-ended or 100-ohm differential impedance. For rapid prototyping, look for Skyworks clock evaluation boards or use a 25 MHz crystal with 18 pF load capacitance as the primary reference source.