Skyworks Solutions Inc. SI5334C-B04801-GM

Overview

SI5334C-B04801-GM from Skyworks Solutions is a pin-controlled, quad-output any-frequency clock generator with four independently configurable differential clock outputs, 0.7 ps RMS typical phase jitter, 350 MHz max integer-output frequency (up to 710 MHz at select frequencies), and factory-programmed configuration for immediate operation on power-up. It serves as a high-precision timing source in PCIe 3.0, Ethernet switch/router, and FPGA clocking systems.

For engineers reviewing the SI5334C-B04801-GM datasheet, SI5334C-B04801-GM pinout, SI5334C-B04801-GM application, or SI5334C-B04801-GM equivalent, key selection considerations include its MultiSynth-based zero-ppm synthesis per output, independent output voltage control (1.5/1.8/2.5/3.3 V), differential input support up to 710 MHz, and 4×4 mm 24-QFN package with pin-controlled phase/frequency adjustment.

Technical Context

The SI5334C-B04801-GM implements a fractional-N PLL architecture with integrated VCO and dual-stage synthesis: a primary PLL (phase detector, loop filter, VCO, R-divider) feeds four independent MultiSynth dividers (M0–M3), each generating one output clock with sub-Hz resolution and zero ppm error. Input flexibility includes crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential (5–710 MHz) references.

Each output driver supports LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL formats with independent VDDO supply (1.4–3.63 V), enabling mixed-voltage system interfacing. Phase adjustment (<20 ps step, ±45 ns range) and glitchless frequency increment/decrement (1 ppm steps, up to 350 MHz) are implemented via dedicated control pins (PINC/FINC, PDEC/FDEC), with loss-of-lock and loss-of-signal monitoring via LOSLOL.

Key Specifications

Pinout & Package

SI5334C-B04801-GM is housed in a 24-lead QFN package (4 × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Skyworks Rev. 1.3 datasheet Figure 2 (Transparent Top View) and Section 3 (Pin Descriptions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5332A-D06989-GM and ICS8430I-01T, the SI5334C-B04801-GM uniquely delivers pin-controlled any-frequency synthesis in a compact 4×4 mm QFN without requiring I²C infrastructure or sacrificing jitter performance - ideal for space-constrained, fixed-configuration high-speed digital systems.

Availability

SI5334C-B04801-GM is available at Aetrix Electronics and suitable for PCIe 3.0 clocking, Ethernet switch/router timing, and FPGA/ASIC clock distribution requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for SI5334C-B04801-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 precision analog solutions for communications, automotive, and industrial markets.

The SI5334C-B04801-GM belongs to Skyworks' Si533x family of pin-configurable clock generators, designed specifically for high-density, low-jitter timing in datacenter switches, telecom line cards, and high-performance computing platforms.

FAQ

What is the maximum differential input frequency supported by the SI5334C-B04801-GM?

The SI5334C-B04801-GM supports differential input frequencies up to 710 MHz on pins IN1/IN2 and IN5/IN6, as specified in Table 4 of the Skyworks Rev. 1.3 datasheet. This enables direct use with high-speed SerDes reference clocks without external division.

Does the SI5334C-B04801-GM require an external EEPROM or I²C interface to operate?

No. The SI5334C-B04801-GM is factory-programmed with non-volatile memory (OTP) and begins operation immediately on power-up with no external configuration required. Its pin-control interface eliminates dependency on I²C buses or external memory devices.

Can the SI5334C-B04801-GM generate four different output frequencies simultaneously?

Yes. The SI5334C-B04801-GM uses four independent MultiSynth dividers (M0–M3) to synthesize four distinct frequencies - each configurable from 0.16 MHz up to 350 MHz (integer) or select frequencies to 710 MHz - with zero ppm error and low jitter.

What output formats does the SI5334C-B04801-GM support, and how are they selected?

The SI5334C-B04801-GM supports LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL output formats. Format selection is factory-programmed per output pair and cannot be changed in-circuit; it is defined during orderable part number configuration (e.g., SI5334C-B04801-GM).

Is spread spectrum clocking (SSC) available on all outputs of the SI5334C-B04801-GM?

Spread spectrum is available only on outputs configured to 100 MHz with Rn divider = 1, as stated in Note 4 of Table 3 and Section 2.10 of the datasheet. It is PCIe 2.0 compliant (±0.5% deviation, 30–33 kHz modulation) and cannot be enabled on other frequencies.