Skyworks Solutions Inc. SI5338N-B06152-GM

Overview

SI5338N-B06152-GM from Skyworks Solutions is an I²C-programmable quad clock generator IC with four independently configurable differential or single-ended outputs, 0.7 ps RMS typical phase jitter, PCIe Gen 1–4 Common Clock and Gen 3 SRNS compliance, and operation from 1.8/2.5/3.3 V core supply. It replaces up to four crystal oscillators in high-speed serial interface timing applications such as PCIe root complexes and Ethernet switch fabric clock trees.

For engineers reviewing the SI5338N-B06152-GM datasheet, SI5338N-B06152-GM pinout, SI5338N-B06152-GM application, or SI5338N-B06152-GM equivalent, key selection criteria include its MultiSynth™ fractional-N synthesis architecture, independent output voltage per driver (1.5–3.3 V), 0 ppm frequency accuracy on all outputs, and support for LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL formats across 0.16–710 MHz.

Technical Context

The SI5338N-B06152-GM implements a two-stage PLL architecture: a high-performance integer-N Phase-Locked Loop (PLL) stage followed by four independent MultiSynth™ fractional-N synthesis blocks, each driving one output pair. This enables true any-frequency synthesis with <20 ps programmable phase step resolution and glitchless 1 ppm frequency increment/decrement via pin control or I²C.

It accepts flexible input references - including 8–30 MHz crystals, 5–200 MHz CMOS, 5–350 MHz SSTL/HSTL, and 5–710 MHz differential signals - and supports external feedback for zero-delay mode. Loss-of-lock and loss-of-signal alarms provide real-time status monitoring for system reliability.

Key Specifications

Pinout & Package

SI5338N-B06152-GM uses a 24-lead QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are fixed per the Si5338 family and validated for this variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-output clock generator applications.

Compared with Si5332A-D06152-GM and ICS853S02IAGLF, the SI5338N-B06152-GM uniquely balances full I²C programmability, four independent outputs, PCIe Gen 4 compliance, and wide-format flexibility - making it optimal for FPGA-based systems requiring runtime clock reconfiguration and mixed-interface timing.

Availability

SI5338N-B06152-GM is available at Aetrix Electronics and suitable for PCIe Gen 4 server platforms, Ethernet switch fabric designs, broadcast video infrastructure, and telecom line card applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SI5338N-B06152-GM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a global leader in analog and mixed-signal semiconductors, specializing in RF, timing, and connectivity solutions for wireless, broadband, automotive, and industrial markets.

The Si5338 product line delivers programmable, low-jitter clock generation for high-speed serial interfaces - designed specifically to replace multiple fixed-frequency oscillators while meeting stringent PCIe, Ethernet, and telecom timing standards.

FAQ

What is the primary function of the SI5338N-B06152-GM in a system?

The SI5338N-B06152-GM serves as a fully programmable quad-output clock generator that synthesizes precise, independent clock frequencies from a single reference input. Its MultiSynth™ architecture enables true any-frequency generation with 0 ppm accuracy, allowing the SI5338N-B06152-GM to replace up to four discrete oscillators while maintaining sub-picosecond jitter performance required for PCIe Gen 4 and 100 GbE applications.

Does the SI5338N-B06152-GM support PCIe Gen 4 timing requirements?

Yes, the SI5338N-B06152-GM meets PCIe Gen 4 common clock jitter specifications with ≤0.45 ps RMS (12 kHz–20 MHz) when configured per Skyworks' recommended settings, including PLL bandwidth of 2–4 MHz and CDR = 10 MHz. This compliance is verified using the Skyworks PCIe Clock Jitter Tool and aligns with PCI-Express Base Specification 4.0 rev. 0.5.

Can the SI5338N-B06152-GM generate different output formats simultaneously?

Yes, the SI5338N-B06152-GM supports simultaneous mixed-format outputs: for example, CLK0A/B in LVDS (100 MHz), CLK1A/B in HCSL (156.25 MHz), CLK2A/B in CMOS (25 MHz), and CLK3A/B in SSTL (312.5 MHz). Each output driver has independent format selection and dedicated VDDO supply (1.4–3.63 V), enabling direct interfacing with heterogeneous SoCs and FPGAs.

How is the SI5338N-B06152-GM programmed and configured?

The SI5338N-B06152-GM is programmed via its I²C/SMBus-compatible interface using Skyworks' ClockBuilder Pro software, which provides GUI-based configuration, real-time jitter simulation, and one-click register file generation. Configuration can be stored in on-chip OTP memory for autonomous startup, eliminating the need for external microcontrollers or boot firmware intervention for the SI5338N-B06152-GM.

What thermal and power specifications apply to the SI5338N-B06152-GM?

The SI5338N-B06152-GM operates from –40 °C to +85 °C with a junction-to-ambient thermal resistance (θJA) of 37 °C/W. At nominal conditions (100 MHz on all outputs, 25 MHz refclk), core supply current is 45 mA typical (60 mA max); output buffer current depends on format and frequency - e.g., 30 mA max for LVPECL at 710 MHz, 8 mA max for LVDS at 710 MHz.