598BCA001653DG Silicon Labs

Si598/Si599 2 10810 MHZ I C PROGRAMMABLE XO/VCXO Features 2 Programmable with 28 parts per I C programmable output trillion frequency resolution frequencies from 10 to 810 MHz Si5602 Integrated crystal provides stability 0.5 ps RMS phase jitter and low phase noise Superior power supply rejection: Frequency changes up to 0.30.4 ps additive jitter 3500 ppm are glitchless Available LVPECL, CMOS, LVDS, 40 to 85 C operation and CML outputs Industry-standard 5x7 mm package 1.8, 2.5, or 3.3 V supply Pin- and register-compatible with Si570/571 Applications Ordering Information: See page 21. SONET / SDH / xDSL Frequency margining Ethernet / Fibre Channel Digital PLLs 3G SDI / HD SDI CPU / FPGA FIFO control Pin Assignments: Multi-rate PLLs Adaptive synchronization Multi-rate reference clocks Agile RF local oscillators See page 20. Description (Top View) The Si598 XO/Si599 VCXO utilizes Skyworks Solutions advanced DSPLL SDA circuitry to provide a low-jitter clock at any frequency. They are user- 7 programmable to any output frequency from 10 to 810 MHz with 28 parts per NC 1 6 V 2 DD trillion (PPT) resolution. The device is programmed via a 2-pin I C compatible serial interface. The wide frequency range and ultra-fine programming resolution make these devices ideal for applications that require in-circuit dynamic frequency OE 2 5 CLK adjustments or multi-rate operation with non-integer related rates. Using an integrated crystal, these devices provide stable low jitter frequency synthesis and GND 3 4 CLK+ replace multiple XOs, clock generators, and DAC controlled VCXOs. 8 Functional Block Diagram SCL Si598 V DD Power Supply Filtering OE SDA Fixed 7 Any Frequency CLK+ Frequency DSPLL V C 1 6 V DD 10 to 810 MHz Oscillator CLK Clock Synthesis OE 2 5 CLK Vc ADC I2C Interface (Si599) GND 3 4 CLK+ 8 SCL SDA SCL GND Si599 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 27, 2021Si598/Si599 TABLE OF CONTENTS Section Page 1. Detailed Block Diagrams .3 2. Electrical Specifications .4 3. Functional Description .11 3.1. Programming a New Output Frequency 11 2 3.2. I C Interface .13 4. Serial Port Registers .14 5. Si598 (XO) Pin Descriptions .19 6. Si599 (VCXO) Pin Descriptions .20 7. Ordering Information .21 8. Si59x Mark Specification 23 9. Outline Diagram and Suggested Pad Layout .24 10. 8-Pin PCB Land Pattern 25 Revision History .26 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 1.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 27, 2021