SI5338B-B-GMR datasheet, PDF - EEWORLD Datasheet

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SI5338B-B-GMR: Description以太网，光纤通道，PCI Express（PCIe），电信时钟发生器 IC 350MHz 1 输出 24-QFN（4x4）; Categorysemiconductor clock and timing; File Size1MB，46 Pages; ManufacturerSkyworks; Websitehttp://www.skyworksinc.com

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SI5338B-B-GMR Overview

以太网，光纤通道，PCI Express（PCIe），电信时钟发生器 IC 350MHz 1 输出 24-QFN（4x4）

SI5338B-B-GMR Parametric

Parameter Name	Attribute value
category
Maker	Skyworks
series	MultiSynth™
Package	卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带
PLL	yes
The main purpose	Ethernet, Fiber Channel, PCI Express (PCIe), Telecom
enter	CML, CMOS, HCSL, HSCL, HSTL, LVDS, LVPECL, SSTL, crystal
output	HCSL，HSTL，LVCMOS，LVDS，LVPECL，SSTL
Number of circuits	1
Ratio - Input:Output	3：4
Differential - Input:Output	yes/no
Frequency - maximum	350MHz
Voltage - Power supply	1.71V ~ 3.63V
Operating temperature	-40°C ~ 85°C
Installation type	surface mount type
Package/casing	24-VFQFN Exposed Pad
Supplier device packaging	24-QFN（4x4）
Basic product number	SI5338

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Si5338

C - P

R O G R A M M A B L E

N Y

- F

R EQ U ENC Y

, A

N Y

- O

U T P U T

UAD

LOC K

EN ERATOR

Features



Low power MultiSynth™ technology



enables independent, any-frequency

synthesis on four differential output



drivers

PCIe Gen 1/2/3/4 Common Clock and

Gen 3 SRNS compliant

Highly-configurable output drivers with



up to four differential outputs, eight

single-ended clock outputs, or a

combination of both



Low phase jitter of 0.7 ps RMS typ

High precision synthesis allows true

zero ppm frequency accuracy on all

outputs

Flexible input reference:



External

Single supply core with excellent

PSRR: 1.8, 2.5, 3.3 V

Independent frequency

increment/decrement feature

enables glitchless frequency

adjustments in 1 ppm steps

Independent phase adjustment on

each of the output drivers with an

accuracy of <20 ps steps

Highly configurable spread

spectrum (SSC) on any output:

frequency from 5 to 350 MHz



Any spread from 0.5 to 5.0%



Any modulation rate from 33 to

63 kHz



Any

Ordering Information:

See page 42.

Pin Assignments

RSVD_GND

CLK0A

CLK0B

VDD

VDDO0



Independently configurable outputs

support any frequency or format:



LVPECL/LVDS:



HCSL:



0.16 to 710 MHz

0.16 to 250 MHz



CMOS: 0.16 to 200 MHz



SSTL/HSTL: 0.16 to 350 MHz



Independent output voltage per driver:

1.5, 1.8, 2.5, or 3.3 V

C/SMBus compatible interface

Easy to use programming software

Small size: 4 x 4 mm, 24-QFN

Low power: 45 mA core supply typ

Wide temperature range: –40 to

+85 °C

IN1

IN2

IN3

IN4

IN5

IN6

GND

Pad

SDA

CLK1A

CLK1B

VDDO1

VDDO2

CLK2A

CLK2B

crystal: 8 to 30 MHz



CMOS input: 5 to 200 MHz



SSTL/HSTL input: 5 to 350 MHz



Differential input: 5 to 710 MHz

External feedback mode allows

zero-delay mode



Loss of lock and loss of signal

alarms



Top View

Applications



Ethernet switch/router

PCIe Gen1/2/3/4

Broadcast video/audio timing

Processor and FPGA clocking



Any-frequency clock conversion

MSAN/DSLAM/PON

Fibre Channel, SAN

Telecom line cards

1 GbE and 10 GbE

INTR

Description

The Si5338 is a high-performance, low-jitter clock generator capable of synthesizing

any frequency on each of the device's four output drivers. This timing IC is capable of

replacing up to four different frequency crystal oscillators or operating as a frequency

translator. Using its patented MultiSynth™ technology, the Si5338 allows generation of

four independent clocks with 0 ppm precision. Each output clock is independently con-

figurable to support various signal formats and supply voltages. The Si5338 provides

low-jitter frequency synthesis in a space-saving 4 x 4 mm QFN package. The device is

programmable via an I

C/SMBus-compatible serial interface and supports operation

from a 1.8, 2.5, or 3.3 V core supply.

C device programming is made easy with ClockBuilder Pro, available at

https://www.skyworksinc.com/en/Application-Pages/Clockbuilder-Pro-Software.

Measuring PCIe clock jitter is quick and easy with the Skyworks Solutions PCIe Clock

Jitter Tool. Download it for free at

https://www.skyworksinc.com/en/application-

pages/pci-express-learning-center.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.6 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 29, 2021

VDDO3

VDD

CLK3B

CLK3A

SCL

Si5338

A B L E O F

O N T E N T S

Section

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2. Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.2. Input Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.3. Synthesis Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.4. Output Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.5. Configuring the Si5338 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.6. Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.7. Output Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.8. Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.9. Reset Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.10. Features of the Si5338 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4. Applications of the Si5338 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1. Free-Running Clock Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.2. Synchronous Frequency Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.3. Configurable Buffer and Level Translator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5. I C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6. Si5338 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8. Device Pinout by Part Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9. Package Outline: 24-Lead QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10. Recommended PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

11.1. Si5338 Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

11.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

12. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

13. Device Errata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.6 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 29, 2021

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