Si51211 Data Sheet Three Output Factory Programmable Clock Generator KEY FEATURES The factory programmable Si51211 is a low power, small footprint and frequency flexible programmable clock generator targeting low power, low cost and high volume consumer Generates up to 3 CMOS clock outputs from 3 to 170 MHz and embedded applications. The device operates from a single crystal or an external clock source and generates 1 to 3 outputs up to 170 MHz. The device is factory pro- Accepts crystal or reference clock input grammed to provide customized output frequencies and control input such as frequency 3 to 165 MHz reference clock input select, spread spectrum on, power down and output enable. Center spread spectrum 8 to 48 MHz crystal input can also be programmed to reduce EMI to meet board level system requirements. Programmable FSEL, SSONb, PD, and OE input functions Applications Digital still camera Crystal/XO replacement IP phone EMI reduction Smart meter Portable devices SSCLK1/ 4 REFCLK/ PLL with XIN/ OE/FSEL/ 3 Modulation CLKIN SSONb Control Buffers, Dividers, 2 XOUT and SSCLK2/ 6 Switch OE/SSONb/PD 8 Programmable To Pin 7 VDDO Matrix Configuration Register 1 V-REG VDD To Core SSCLK3 To Pin 4 and Pin 6 7 (VDDO) 5 VSS Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 23, 2021 1Si51211 Data Sheet Feature List 1. Feature List The Si51211 highlighted features are listed below. Generates up to 3 CMOS clock outputs from 3 to 170 MHz Separate voltage supply pins Accepts crystal or reference clock input V = 2.5 to 3.3 V DD 3 to 165 MHz reference clock input V = 1.8 to 3.3 V (V < V ) DDO DDO DD 8 to 48 MHz crystal input 0.25%, 0.5% or 1% spread spectrum (center spread) Programmable FSEL, SSONb, PD, and OE input functions Low cycle-cycle jitter Low power dissipation Ultra small 8-pin TDFN package (1.4 mm x 1.6 mm) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 23, 2021 2