SI5346 Clock Generator: Features, Pinout and Datasheet

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Published: 19 April 2022 | Last Updated: 19 April 2022

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SI5346A-B-GM

SI5346A-B-GM

Silicon Labs

1.8V Clock Generators 44-VFQFN Exposed Pad 44 Terminals Surface Mount 1.71V~3.47V Tray

Purchase Guide

1.8V Clock Generators 44-VFQFN Exposed Pad 44 Terminals Surface Mount 1.71V~3.47V Tray

The Si5346 is a dual DSPLL version in a smaller package. Each DSPLL has access to any of the four inputs and can provide low jitter clocks on any of the device outputs. Each DSPLL supports independent free-run, holdover modes of operation, as well as automatic and hitless input clock switching. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

Through this video, you can learn about Clock Generator’s definition, meaning and explanation.

What is CLOCK GENERATOR? What does CLOCK GENERATOR mean? CLOCK GENERATOR meaning & explanation

SI5346 Pinout

The following figure is the diagram of SI5346 Pinout.

Pinout.png

Pinout


SI5346 CAD Model

The followings are SI5346 Footprint and 3D Model.

Footprint.png

Footprint


3D Model.png

3D Model


SI5346 Description

The SI5346 is a dual DSPLL version in a smaller package. Each DSPLL has access to any of the four inputs and can provide low jitter clocks on any of the device outputs. Based on 4th generation DSPLL technology, these devices provide any-frequency conversion with typical jitter performance under 100 fs. Each DSPLL supports independent free-run, holdover modes of operation, as well as automatic and hitless input clock switching. The Si5346 is programmable via a serial interface with in-circuit programmable non-volatile memory so that it always powers up in a known configuration. Programming the Si5346 is easy with Silicon Labs' ClockBuilder Pro™ software. Factory preprogrammed devices are also available.

This article will introduce SI5346 systematically from its features, pinout to its specifications, applications, also including SI5346 datasheet and so much more.


SI5346 Key Features

● Four or two independent DSPLLs, any output frequency from any input frequency

● Ultra-low jitter of 95 fs rms

● Input frequency range:

   ◆ External Crystal: 25–54 MHz

   ◆ Differential: 8 kHz to 750 MHz

   ◆ LVCMOS: 8 kHz to 250 MHz

● Output frequency range:

   ◆ Differential: 100 Hz to 720 MHz

   ◆ LVCMOS: 100 Hz to 250 MHz

● Status Monitoring

● Hitless switching

● Si5346: 4 input, 4 output, 44-QFN 7×7 mm


SI5346 Features

● Four or two DSPLLs to synchronize to multiple inputs

● Generates any combination of output frequencies from any input frequency

● Ultra low jitter:

   ◆ 95 fs typ (12 kHz – 20 MHz)

● Input frequency range:

   ◆ Differential: 8 kHz to 750 MHz

   ◆ LVCMOS: 8 kHz to 250 MHz

● Output frequency range:

   ◆ Differential: up to 720 MHz

   ◆ LVCMOS: up to 250 MHz

● Flexible crosspoints route any input to any output clock

● Programmable jitter attenuation bandwidth per DSPLL: 0.1 Hz to 4 kHz

● Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL with programmable signal amplitude

● Status monitoring (LOS, OOF, LOL)

● Hitless input clock switching: automatic or manual

● Locks to gapped clock inputs

● Automatic free-run and holdover modes

● Fastlock feature for low nominal bandwidths

● Glitchless on-the-fly DSPLL frequency changes

● DCO mode: as low as 0.01 ppb steps per DSPLL

● Core voltage:

   ◆ VDD: 1.8 V ±5%

   ◆ VDDA: 3.3 V ±5%

● Independent output clock supply pins: 3.3, 2.5, or 1.8 V

● Output-output skew:

   ◆ Using same DSPLL: 65 ps (Max)

● Serial interface: I2C or SPI

● In-circuit programmable with non-volatile OTP memory

● ClockBuilder Pro software simplifies device configuration

● Si5346: Dual DSPLL, 44-QFN 7×7 mm

● Temperature range: –40 to +85 °C

● Pb-free, RoHS-6 compliant


Specifications

Silicon Labs SI5346A-B-GM technical specifications, attributes, parameters and parts with similar specifications to Silicon Labs SI5346A-B-GM.
  • Type
    Parameter
  • Factory Lead Time
    6 Weeks
  • Mount

    In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

    Surface Mount
  • Mounting Type

    The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    44-VFQFN Exposed Pad
  • Frequency(Max)
    712.5MHz
  • Operating Temperature

    The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

    -40°C~85°C
  • Packaging

    Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

    Tray
  • Published
    1997
  • Part Status

    Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

    Not For New Designs
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    2 (1 Year)
  • Number of Terminations
    44
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Additional Feature

    Any Feature, including a modified Existing Feature, that is not an Existing Feature.

    ALSO REQUIRES 3.3V SUPPLY
  • Voltage - Supply

    Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.

    1.71V~3.47V
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    QUAD
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    NO LEAD
  • Peak Reflow Temperature (Cel)

    Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.

    260
  • Supply Voltage

    Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.

    1.8V
  • Terminal Pitch

    The center distance from one pole to the next.

    0.5mm
  • Time@Peak Reflow Temperature-Max (s)

    Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.

    40
  • Output

    In electronic components, the parameter "Output" typically refers to the signal or data that is produced by the component and sent to another part of the circuit or system. The output can be in the form of voltage, current, frequency, or any other measurable quantity depending on the specific component. The output of a component is often crucial in determining its functionality and how it interacts with other components in the circuit. Understanding the output characteristics of electronic components is essential for designing and troubleshooting electronic circuits effectively.

    CML, HCSL, LVCMOS, LVDS, LVPECL
  • JESD-30 Code

    JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.

    S-XQCC-N44
  • Qualification Status

    An indicator of formal certification of qualifications.

    Not Qualified
  • Number of Circuits
    1
  • uPs/uCs/Peripheral ICs Type

    The parameter "uPs/uCs/Peripheral ICs Type" refers to the classification of various integrated circuits used in electronic devices. It encompasses microprocessors (uPs), microcontrollers (uCs), and peripheral integrated circuits that provide additional functionalities. This classification helps in identifying the specific type of chip used for processing tasks, controlling hardware, or interfacing with other components in a system. Understanding this parameter is essential for selecting the appropriate electronic components for a given application.

    CLOCK GENERATOR, PROCESSOR SPECIFIC
  • Supply Current-Max

    Supply Current-Max refers to the maximum amount of current that an electronic component or circuit can draw from its power supply under specified operating conditions. It is a critical parameter that determines the power consumption and thermal performance of the device. Exceeding this limit can lead to overheating, potential damage, or failure of the component. Knowing the Supply Current-Max helps in designing circuits that ensure proper operation and reliability.

    230mA
  • Input

    In electronic components, "Input" refers to the signal or data that is provided to a device or system for processing or manipulation. It is the information or command that is received by the component to initiate a specific function or operation. The input can come from various sources such as sensors, other electronic devices, or user interactions. It is crucial for the proper functioning of the component as it determines how the device will respond or behave based on the input received. Understanding and managing the input parameters is essential in designing and using electronic components effectively.

    LVCMOS, LVDS, LVPECL, Crystal
  • Ratio - Input:Output

    The parameter "Ratio - Input:Output" in electronic components refers to the relationship between the input and output quantities of a device or system. It is a measure of how the input signal or energy is transformed or converted into the output signal or energy. This ratio is often expressed as a numerical value or percentage, indicating the efficiency or effectiveness of the component in converting the input to the desired output. A higher ratio typically signifies better performance or higher efficiency, while a lower ratio may indicate losses or inefficiencies in the conversion process. Understanding and optimizing the input-output ratio is crucial in designing and evaluating electronic components for various applications.

    5:4
  • Primary Clock/Crystal Frequency-Nom

    The parameter "Primary Clock/Crystal Frequency-Nom" refers to the nominal frequency at which a clock or crystal oscillator operates in electronic components. This frequency is critical for synchronizing the timing of various processes within a circuit or system. It is typically specified in hertz and indicates the standard or average frequency that the oscillator is designed to achieve under normal operating conditions. Accurate frequency is essential for ensuring proper functioning and performance of digital circuits and communication systems.

    54MHz
  • PLL

    PLL stands for Phase-Locked Loop, which is a control system that generates an output signal whose phase is related to the phase of an input signal. It is commonly used in electronic components to synchronize, modulate, demodulate, filter, or recover a signal's frequency. A PLL typically consists of a phase detector, a loop filter, a voltage-controlled oscillator (VCO), and a feedback circuit. The PLL locks the phase of the output signal to the phase of the input signal, making it a versatile tool in various applications such as frequency synthesis, clock recovery, and frequency modulation.

    Yes
  • Differential - Input:Output

    Differential - Input:Output refers to the relationship between the input and output signals in differential amplifiers or circuits. It measures the difference in voltage between two input terminals and produces an output that is proportional to this difference. This parameter is essential for noise rejection and improving signal integrity in various applications, such as operational amplifiers and data acquisition systems. It allows circuits to effectively amplify small signals while minimizing interference and common-mode noise.

    Yes/Yes
  • Divider/Multiplier

    The parameter "Divider/Multiplier" in electronic components refers to a feature that allows the component to divide or multiply an input signal by a certain factor. This feature is commonly found in components such as operational amplifiers, voltage regulators, and signal processing circuits. In the context of operational amplifiers, the Divider/Multiplier parameter indicates the ability of the amplifier to scale the input signal by a specific factor, either dividing it or multiplying it. This can be useful for adjusting the amplitude or gain of a signal in a circuit.Overall, the Divider/Multiplier parameter provides flexibility in signal processing applications by allowing users to manipulate the input signal according to their specific requirements, whether it involves scaling down the signal for further processing or amplifying it for increased output.

    Yes/No
  • Length
    7mm
  • Height Seated (Max)

    Height Seated (Max) is a parameter in electronic components that refers to the maximum allowable height of the component when it is properly seated or installed on a circuit board or within an enclosure. This specification is crucial for ensuring proper fit and alignment within the overall system design. Exceeding the maximum seated height can lead to mechanical interference, electrical shorts, or other issues that may impact the performance and reliability of the electronic device. Manufacturers provide this information to help designers and engineers select components that will fit within the designated space and function correctly in the intended application.

    0.9mm
  • Width
    7mm
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    RoHS Compliant
0 Similar Products Remaining

SI5346 Functional Block Diagram

The following is the Block Diagram of SI5346.

Si5346 Block Diagram.png

Si5346 Block Diagram


SI5346 Equivalent

      Model number                 Manufacturer                                                 Description
SI5346A-A-GMSilicon Laboratories IncProcessor Specific Clock Generator, 800MHz, CMOS, 7 X 7 MM, ROHS COMPLIANT, MO-220, QFN-44
SI5346A-A-GMRSilicon Laboratories IncProcessor Specific Clock Generator, 800MHz, CMOS, 7 X 7 MM, ROHS COMPLIANT, MO-220, QFN-44


Parts with Similar Specs

The three parts on the right have similar specifications to Silicon Labs & SI5346A-B-GM.

SI5346 Applications

● OTN Muxponders and Transponders

● 10/40/100G network line cards

● GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)

● Carrier Ethernet switches

● Broadcast video


SI5346 Package

The following diagrams show the SI5346 Package.

View A.png

View A


View B.png

View B


SI5346 PCB Land Pattern

The following diagram shows the SI5346 PCB Land Pattern.

PCB Land Pattern.png

PCB Land Pattern


SI5346 Top Marking

The following is the Top Marking of SI5346.

Top Marking.png

Top Marking


SI5346 Manufacturer

Silicon Labs (NASDAQ: SLAB) is a leading provider of silicon, software and system solutions for the Internet of Things, Internet infrastructure, industrial control, consumer and automotive markets. Resolving the electronics industry's toughest problems, providing customers with significant advantages in performance, energy savings, connectivity, and design simplicity. Backed by world-class engineering teams with unsurpassed software and mixed-signal design expertise, Silicon Labs empowers developers with the tools and technologies they need to advance quickly and easily from initial idea to final product.


Datasheet PDF

Download datasheets and manufacturer documentation for Silicon Labs SI5346A-B-GM.
Frequently Asked Questions

How many pins of SI5346A-B-GM?

44 Pins.

What’s the operating temperature of SI5346A-B-GM?

-40°C~85°C.

What is the essential property of the Si5346?

The Si5346 is a dual DSPLL version in a smaller package. Each DSPLL has access to any of the four inputs and can provide low jitter clocks on any of the device outputs. 

Are the differential output drivers supported by Si5347 and Si5346 the same?

The Si5347 supports up to eight differential output drivers and the Si5346 supports four. Each driver has a configurable voltage amplitude and common mode voltage covering a wide variety of differential signal formats including LVPECL, LVDS, HCSL, and CML. 
SI5346A-B-GM

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