Si5351-B I2C-Programmable Any-Frequency CMOS Clock ...

1 Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 2021Si5351A/B/C-BI2C-PROGRAMMABLE Any-Frequency CMOS CLOCKGENERATOR + VCXOF eaturesApplicationsDescriptionThe Si5351 is an I2C configurable Clock generator that is ideally suited forreplacing crystals, crystal oscillators, VCXOs, phase-locked loops (PLLs), andfanout buffers in cost-sensitive applications. Based on a PLL/VCXO + high resolution MultiSynth fractional dividerarchitecture, the Si5351 can generate any frequency up to 200 MHz on each ofits outputs with 0 ppm error. Three versions of the Si5351 are available to meet awide variety of applications. The Si5351A generates up to 8 free-running clocks using an internal oscillatorfor replacing crystals and crystal oscillators. The Si5351B adds an internalVCXO and provides the flexibility to replace both free-running clocks andsynchronous clocks.

2 It eliminates the need for higher cost, custom pullablecrystals while providing reliable operation over a wide tuning range. TheSi5351C offers the same flexibility but synchronizes to an external referenceclock (CLKIN). Generates up to eight non-integer-related frequencies from kHz to 200 MHz I2C user definable configuration Exact frequency synthesis at each output (0 ppm error) Highly linear VCXO Optional Clock input (CLKIN) Low output period jitter: < 70 ps pp, typ Configurable spread spectrum selectable at each output Operates from a low-cost, fixed frequency crystal: 25 or 27 MHz Supports static phase offset Programmable rise/fall time control Glitchless frequency changes Separate voltage supply pins provide level translation: Core VDD: or V Output VDDO: , , or V Excellent PSRR eliminates external power supply filtering Very low power consumption Adjustable output delay Available in three packages types: 10-MSOP: 3 outputs 16-QFN (3x3 mm): 4 outputs 20-QFN (4x4 mm).

3 8 outputs PCIE Gen 1 compatible Supports HCSL compatible swing Audio/video equipment, gaming Printers, scanners, projectors Handheld Instrumentation Laser range finder Residential gateways Networking/communication Servers, storage XO replacementOrdering Information:See page 3410-MSOP20-QFN16-QFNSi5351A/B/C-B2 Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 2021 Functional Block DiagramsOSCXAXBPLLVCXOR0R1 CLK0 CLK1 VDDOAR2R3 CLK2 CLK3 VDDOBR4R5 CLK4 CLK5 VDDOCR6R7 CLK6 CLK7 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 MultiSynth 4 MultiSynth 5 MultiSynth 6 MultiSynth 7 VCSCLSDAC ontrol LogicOEBSSENI2 CSi5351B (20-QFN)R0R1 CLK0 CLK1 VDDOAR2R3 CLK2 CLK3 VDDOBR4R5 CLK4 CLK5 VDDOCR6R7 CLK6 CLK7 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 MultiSynth 4 MultiSynth 5 MultiSynth 6 MultiSynth 7 SCLA0 SDAC ontrol LogicOEBSSENI2 COSCXAXBPLLAPLL BSi5351A (20-QFN)Si5351A/B/C-BSkyworks Solutions, Inc.

4 Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 2021R0 CLK0 VDDOAR1 CLK1 VDDOBR2 CLK2 VDDOCR3 CLK3 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 SCLSDAC ontrol LogicOEBI2 COSCXAXBPLLA vcxoSi5351B (16-QFN)VCR0R1 CLK0 CLK1 VDDOAR2R3 CLK2 CLK3 VDDOBR4R5 CLK4 CLK5 VDDOCR6R7 CLK6 CLK7 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 MultiSynth 4 MultiSynth 5 MultiSynth 6 MultiSynth 7 PLLAPLLBXAXBOSCCLKINSCLSDAC ontrol LogicINTROEBI2C Si5351C (20-QFN)R0 CLK0 VDDOAR1 CLK1 VDDOBR2 CLK2 VDDOCR3 CLK3 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 SCLCLKINSDAC ontrol LogicOEBI2 COSCXAXBPLLAPLL BSi5351C (16-QFN)R0 CLK0 VDDOAR1 CLK1 VDDOBR2 CLK2 VDDOCR3 CLK3 VDDODM ultiSynth 0 MultiSynth 1 MultiSynth 2 MultiSynth 3 SCLA0 SDAC ontrol LogicOEBI2 COSCXAXBPLLAPLL BSi5351A (16-QFN)Si5351A/B/C-B4 Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 20211.

5 Ordering GuideTable 1. Si5350/51 Ordering Guide1,2 Part NumberI2C or PinFrequency ReferenceProgrammed?OutputsDatasheetSi53 51A-B-GTI2 CXTAL onlyBlank3Si5351A/B/C-BSi5351A-B-GM1I2 CXTAL onlyBlank4Si5351A/B/C-BSi5351B-B-GM1I2 CXTAL and/or VoltageBlank4Si5351A/B/C-BSi5351C-B-GM1I 2 CXTAL and/or CLKINB lank4Si5351A/B/C-BSi5351A-B-GMI2 CXTAL onlyBlank8Si5351A/B/C-BSi5351B-B-GMI2 CXTAL and/or VoltageBlank8Si5351A/B/C-BSi5351C-B-GMI2 CXTAL and/or CLKINB lank8Si5351A/B/C-BSi5351A-Bxxxxx-GTI2 CXTAL onlyFactory Preprogrammed3Si5351A/B/C-BSi5351A-Bxxxx x-GM1I2 CXTAL onlyFactory Preprogrammed4Si5351A/B/C-BSi5351B-Bxxxx x-GM1I2 CXTAL and/or VoltageFactory Preprogrammed4Si5351A/B/C-BSi5351C-Bxxxx x-GM1I2 CXTAL and/or CLKINF actory Preprogrammed4Si5351A/B/C-BSi5351A-Bxxxx x-GMI2 CXTAL onlyFactory Preprogrammed8Si5351A/B/C-BSi5351B-Bxxxx x-GMI2 CXTAL and/or VoltageFactory Preprogrammed8Si5351A/B/C-BSi5351C-Bxxxx x-GMI2 CXTAL and/or CLKINF actory Preprogrammed8Si5351A/B/C-BSi5350A-Bxxxx x-GTPinXTAL onlyFactory Preprogrammed3Si5350A-BSi5350A-Bxxxxx-GM 1 PinXTAL onlyFactory

6 Preprogrammed4Si5350A-BSi5350A-Bxxxxx-GM PinXTAL onlyFactory Preprogrammed8Si5350A-BSi5350B-Bxxxxx-GT PinXTAL and/or VoltageFactory Preprogrammed3Si5350B-BSi5350B-Bxxxxx-GM 1 PinXTAL and/or VoltageFactory Preprogrammed4Si5350B-BSi5350B-Bxxxxx-GM PinXTAL and/or VoltageFactory Preprogrammed8Si5350B-BSi5350C-Bxxxxx-GT PinXTAL and/or CLKINF actory Preprogrammed3Si5350C-BSi5350C-Bxxxxx-GM 1 PinXTAL and/or CLKINF actory Preprogrammed4Si5350C-BSi5350C-Bxxxxx-GM PinXTAL and/or CLKINF actory Preprogrammed8Si5350C- = 25/27 MHz, Voltage = 0 to VDD, CLKIN = 10 to 100 MHz. "xxxxx" = unique custom Create custom, factory preprogrammed parts using ClockBuilder Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 20212. Technical Support ResourcesTable 2. Technical Support ResourcesResourceURLSi5350/51 Frequently Asked Pro (CBPro) Development Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 2021 TABLE OF CONTENTSS ectionPage1.

7 Ordering Guide .. 42. Technical Support Resources .. 53. Electrical Specifications .. 84. Functional Description .. Input Stage .. Synthesis Stages .. Output Stage .. Spread Spectrum .. Control Pins (OEB, SSEN) .. Status Pins (INTR) .. 175. I2C Interface .. 186. Configuring the Si5351 .. Writing a Custom Configuration to RAM .. Si5351 Application Examples .. Replacing Crystals and Crystal Oscillators .. Replacing Crystals, Crystal Oscillators, and VCXOs .. Replacing Crystals, Crystal Oscillators, and PLLs .. Applying a Reference Clock at XTAL Input .. HCSL Compatible Outputs .. 247. Design Considerations .. Power Supply Decoupling/Filtering .. Power Supply Sequencing .. External Crystal .. External Crystal Load Capacitors .. Unused Pins .. Trace Characteristics .. 258. Register Map Summary .. 269. Register Descriptions ..2610. Si5351 Pin Descriptions .. Si5351A 20-pin QFN .. Si5351B 20-Pin QFN .. Si5351C 20-Pin QFN.

8 Si5351A 16-Pin QFN .. Si5351B 16-Pin QFN .. Si5351C 16-Pin QFN .. Si5351A 10-Pin MSOP .. 3311. Ordering Information ..3412. Packaging .. 20-pin QFN Package Outline .. Land Pattern: 20-Pin QFN .. 16-Pin QFN Package Outline .. Land Pattern: 16-Pin QFN .. 39Si5351A/B/C-BSkyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 10-Pin MSOP Package Outline .. Land Pattern: 10-Pin MSOP .. 4313. Top Marking .. 20-Pin QFN Top Marking .. Top Marking Explanation .. 16-Pin QFN Top Marking .. Top Marking Explanation .. 10-Pin MSOP Top Marking .. Top Marking Explanation .. 46 Revision History .. 47 Contact Information .. 48Si5351A/B/C-B8 Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 20213.

9 Electrical SpecificationsTable 3. Recommended Operating ConditionsParameterSymbolTest ConditionMinTypMaxUnitAmbient TemperatureTA 402585 CCore Supply Buffer :All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. Typical values apply at nominal supply voltages and an operating temperature of 25 C unless otherwise and VDDOx can be operated at independent supply sequencing for VDD and VDDOx requires that all VDDOx be powered up either before or at the same time as 4. DC Characteristics(VDD= V 10%, or V 10%, TA= 40 to 85 C)ParameterSymbolTest ConditionMinTypMaxUnitCore Supply CurrentIDDE nabled 3 outputs 2235mAEnabled 4 outputs 2438mAEnabled 8 outputs 2745mAOutput Buffer Supply Current (Per Output)*IDDOxCL=5pF Current ICLKINCLKIN, SDA, SCLVin < V 10 AIVCVC 30 AOutput V VDDO, default high drive 50 *Note: Output clocks less than or equal to 100 Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 27, 2021 Table 5.

10 AC Characteristics(VDD= V 10%, or V 10%, TA= 40 to 85 C)ParameterSymbolTest ConditionMinTypMaxUnitPower-up TimeTRDYFrom VDD=VDDmin to valid output Clock , CL=5pF, fCLKn>1 MHz 210msPower-up Time, PLL Bypass ModeTBYPFrom VDD=VDDmin to valid output Clock , CL=5pF, fCLKn>1 MHz 1 msOutput Enable TimeTOEFrom OEB pulled low to valid Clock output, CL=5pF, fCLKn>1 MHz 10 sOutput frequency Transition TimeTFREQ fCLKn>1 MHz 10 sOutput Phase OffsetPSTEP 333 ps/stepSpread Spectrum frequency DeviationSSDEVDown spread. Selectable in steps. spread. Selectable in steps. Spectrum Modulation Specifications (Si5351B Only)VCXO Control Voltage RangeVc0 VDD/2 VDDVVCXO Gain (configurable)KvVc = 10 90% of VDD, VDD = V18 150ppm/VVCXO Control Voltage LinearityKVLVc = 10 90% of VDD 5 +5%VCXO Pull Range (configurable)PRVDD = V* 300 240ppmVCXO Modulation Bandwidth 10 kHz*Note: Contact Skyworks Solutions for V VCXO 6. Input Clock Characteristics(VDD= V 10%, or V 10%, TA= 40 to 85 C)ParameterSymbolTest ConditionMinTypMaxUnitCrystal FrequencyfXTAL25 27 MHzCLKIN Input Low VoltageVIL x VDDVCLKIN Input High Voltage x VDD VCLKIN frequency RangefCLKIN10 100 MHzSi5351A/B/C-B10 Skyworks Solutions, Inc.