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SI5351C-B-GM1

SI5351C-B-GM1

Skyworks Solutions Inc.
Clock Generator, VCXO IC 200MHz 1 16-VFQFN Exposed Pad
Active702 in stock
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Overview

The SI5351C-B-GM1 is a highly flexible, I2C programmable clock generator capable of synthesizing up to eight non-integer-related frequencies from 8kHz to 200MHz. It functions as a replacement for multiple crystal oscillators and VCXOs, consolidating timing components into a single 16-QFN package. This specific variant supports both crystal and external clock inputs, providing LVCMOS outputs with zero ppm synthesis error.

Why Choose This Part

It offers exceptional frequency flexibility with the ability to generate any rate from 8kHz to 200MHz on each of its outputs. The 16-VFQFN package and low 24mA operating current make it ideal for power-sensitive and space-constrained designs. Its I2C interface allows for dynamic frequency reconfiguration, eliminating the need for hardware-fixed crystals.

Applications

XO/VCXO Replacement
Consolidates multiple discrete crystal oscillators into a single IC to save PCB space and reduce BOM cost.
Audio/Video Equipment
Provides precise, low-jitter master clocks for gaming consoles, projectors, and digital media players.
Networking and Storage
Generates various reference clocks required for residential gateways, servers, and communication switches.
Handheld Instrumentation
Enables small-form-factor frequency generation for portable laser range finders and test equipment.

Key Specifications

PLL Yes
Type Clock Generator, VCXO
Input Clock, Crystal
Output LVCMOS
Mounting Type Surface Mount
Package / Case 16-VFQFN Exposed Pad
Frequency - Max 200MHz
Voltage - Supply 2.25V ~ 2.75V, 3V ~ 3.6V
Divider/Multiplier Yes/No
Number of Circuits 1
Ratio - Input:Output 2:4
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 16-QFN (3x3)
Differential - Input:Output No/No

Getting Started

Designers should use the Skyworks ClockBuilder Pro software to generate configuration files and register maps. The I2C interface is used to load these parameters into the device at startup or to change frequencies on the fly. For hardware evaluation, the Si5351-B-EVB provides a convenient platform to test output performance and jitter across different supply voltages from 1.71V to 3.6V.

Part of Skyworks SI5351 family » SI5351C-B

SI5351C-B Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Type Package Voltage Ratio - Input:Output Temp Range Stock
SI5351C-B-GM1 (this part) Clock Generator, V.. VFQFN-16 2.25V 2:4 -40degC ~ 85degC (.. 702
SI5351C-B-GM Clock Generator VFQFN-20 1.71V 2:8 -40degC ~ 85degC 44,248
SI5351C-B-GMR Clock Generator VFQFN-20 1.71V 2:8 -40degC ~ 85degC 6,085

Also Consider

Si5351A-B-GT Skyworks Solutions Inc. - Lower cost alternative if only a crystal input is required without the VCXO or external clock input features.
CDCE913 TITexas Instruments - A 3-output PLL clock synthesizer that also offers I2C programmability and VCXO functionality in a TSSOP package.
8T49N241 RENRenesas Electronics - Suitable for higher performance networking applications requiring extremely low jitter and more complex frequency translation.

Categories

Clocks & Timing > Clock Generators & PLLs Clocks & Timing