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SI5351C-B-GM

SI5351C-B-GM

Skyworks Solutions Inc.
Clock Generator IC 200MHz 1 20-VFQFN Exposed Pad
Active44,248 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The SI5351C-B-GM is a highly flexible, I2C-programmable CMOS clock generator capable of synthesizing up to 8 independent frequencies ranging from 8 kHz to 200 MHz. It features an internal PLL architecture that allows for glitchless frequency changes and eliminates the need for multiple crystals or discrete oscillators in complex timing designs.

Why Choose This Part

This IC offers exceptional PSRR to eliminate external power supply filtering and features a very low operating current of 27mA with all 8 outputs active. Its ability to support static phase offset and adjustable output delays provides engineers with fine-grained control over signal integrity and timing margins.

Applications

Multi-Clock SoC Timing
Providing multiple synchronous or asynchronous clock signals for FPGAs, processors, and peripheral ICs from a single reference.
PCIE Gen 1 Systems
Generating reference clocks for PCI Express applications requiring Gen 1 compatibility.
Level Translation
Utilizing separate voltage supply pins to interface between different logic levels across system domains.
EMI Reduction
Applying selectable spread spectrum modulation at each output to minimize electromagnetic interference at the PCB level.

Key Specifications

PLL Yes
Type Clock Generator
Input Clock, Crystal
Output LVCMOS
Mounting Type Surface Mount
Package / Case 20-VFQFN Exposed Pad
Frequency - Max 200MHz
Voltage - Supply 1.71V ~ 3.6V
Divider/Multiplier Yes/No
Number of Circuits 1
Ratio - Input:Output 2:8
Operating Temperature -40degC ~ 85degC
Supplier Device Package 20-QFN (4x4)
Differential - Input:Output No/No

Getting Started

Configuration is handled via the I2C interface using Skyworks ClockBuilder Pro software to generate register settings. For rapid prototyping, engineers often use the Si5351A-B-EVB evaluation board to verify frequency plans before PCB integration.

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-GM (this part) 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
SI5351C-B-GM1 Clock Generator, V.. VFQFN-16 2.25V 2:4 -40degC ~ 85degC (.. 702

Also Consider

SI5351A-B-GT Skyworks Solutions Inc. - Lower cost version in a 10-MSOP package for applications only requiring crystal inputs and fewer output clocks.
8T49N241-999NLGI RENRenesas Electronics - Select if higher frequency performance and fractional-n synthesis are required for jitter-sensitive networking applications.

Categories

Clocks & Timing > Clock Generators & PLLs