Datasheet Si5351 (Silicon Labs) - 2

S i 5 3 5 1 A / B / C - B Table 1. The Complete Si5350/51 Clock Generator Family Part Number I2C or Pin Frequency Reference Programmed? Outputs Datasheet
Si5351A-B-GT I2C XTAL only Blank 3 Si5351-B Si5351A-B-GM I2C XTAL only Blank 8 Si5351-B Si5351B-B-GM I2C XTAL and/or Voltage Blank 8 Si5351-B Si5351C-B-GM I2C XTAL and/or CLKIN Blank 8 Si5351-B Si5351A-Bxxxxx-GT I2C XTAL only Factory Pre-Programmed 3 Si5351-B Si5351A-Bxxxxx-GM I2C XTAL only Factory Pre-Programmed 8 Si5351-B Si5351B-Bxxxxx-GM I2C XTAL and/or Voltage Factory Pre-Programmed 8 Si5351-B Si5351C-Bxxxxx-GM I2C XTAL and/or CLKIN Factory Pre-Programmed 8 Si5351-B Si5350A-Bxxxxx-GT Pin XTAL only Factory Pre-Programmed 3 Si5350A-B Si5350A-Bxxxxx-GM Pin XTAL only Factory Pre-Programmed 8 Si5350A-B Si5350B-Bxxxxx-GT Pin XTAL and/or Voltage Factory Pre-Programmed 3 Si5350B-B Si5350B-Bxxxxx-GM Pin XTAL and/or Voltage Factory Pre-Programmed 8 Si5350B-B Si5350C-Bxxxxx-GT Pin XTAL and/or CLKIN Factory Pre-Programmed 3 Si5350C-B Si5350C-Bxxxxx-GM Pin XTAL and/or CLKIN Factory Pre-Programmed 8 Si5350C-B
Notes: 1.
XTAL = 25/27 MHz, Voltage = 0 to VDD, CLKIN = 10 to 100 MHz. "xxxxx" = unique custom code.
2.
Create custom, factory pre-programmed parts at www.silabs.com/ClockBuilder.
2 Rev. 1.0
Document Outline 1. Electrical Specifications 2. Detailed Block Diagrams 3. Functional Description 3.1. Input Stage 3.1.1. Crystal Inputs (XA, XB) 3.1.2. External Clock Input (CLKIN) 3.1.3. Voltage Control Input (VC) 3.2. Synthesis Stages 3.3. Output Stage 3.4. Spread Spectrum 3.5. Control Pins (OEB, SSEN) 3.5.1. Output Enable (OEB) 3.5.2. Spread Spectrum Enable (SSEN)—Si5351A and Si5351B only 4. I2C Interface 5. Configuring the Si5351 5.1. Writing a Custom Configuration to RAM 5.2. Si5351 Application Examples 5.3. Replacing Crystals and Crystal Oscillators 5.4. Replacing Crystals, Crystal Oscillators, and VCXOs 5.5. Replacing Crystals, Crystal Oscillators, and PLLs 5.6. Applying a Reference Clock at XTAL Input 5.7. HCSL Compatible Outputs 6. Design Considerations 6.1. Power Supply Decoupling/Filtering 6.2. Power Supply Sequencing 6.3. External Crystal 6.4. External Crystal Load Capacitors 6.5. Unused Pins 6.6. Trace Characteristics 7. Register Map Summary 8. Register Descriptions 9. Si5351 Pin Descriptions 9.1. Si5351A 20-pin QFN 9.2. Si5351B 20-Pin QFN 9.3. Si5351C 20-Pin QFN 9.4. Si5351A 10-Pin MSOP 10. Ordering Information 11. Package Outlines 11.1. 20-pin QFN 12. Land Pattern: 20-Pin QFN 12.1. 10-Pin MSOP Package Outline 13. Land Pattern: 10-Pin MSOP 14. Top Marking 14.1. 20-Pin QFN Top Marking 14.2. Top Marking Explanation 14.3. 10-Pin MSOP Top Marking 14.4. Top Marking Explanation Document Change List