Si5368 ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR Features Generates any frequency from Supports holdover and freerun 2 kHz to 945 MHz and select modes of operation frequencies to 1.4 GHz from an Five clock outputs with input frequency of 2 kHz to selectable signal format 710 MHz (LVPECL, LVDS, CML, CMOS) Ultra-low jitter clock outputs with SONET frame sync switching jitter generation as low as 300 fs and regeneration rms (12 kHz20 MHz) Support for ITU G.709 and Integrated loop filter with selectable custom FEC ratios (253/226, loop bandwidth (60 Hz to 8.4 kHz) 239/237, 255/238, 255/237, Meets OC-192 GR-253-CORE jitter 255/236) Ordering Information: specifications LOL, LOS, FOS alarm outputs See page 79. Four clock inputs with manual or Digitally-controlled output phase automatically controlled hitless adjust 2 switching and phase build-out I C or SPI programmable Pin Assignments Small size: 14 x 14 mm 100-pin settings TQFP Pb-free, RoHS compliant Applications 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 NC 1 75 NC SONET/SDH OC-48/STM-16/OC- Data converter clocking NC NC 2 74 73 RST 3 NC 192/STM-64 line cards OTN/WDM Muxponder, MSPP, NC NC 4 72 VDD 71 SDI 5 70 A2 SS GbE/10GbE, 1/2/4/8/10/16G Fibre ROADM line cards VDD 6 GND 7 69 A1 GND A0 8 68 Channel SONET/SDH + PDH clock 67 NC C1B 9 66 NC C2B 10 ITU G.709 and custom FEC line synthesis 65 GND C3B 11 64 GND T ALM 12 63 0 C3A 13 VDD Si5368 cards Test and measurement VDD GND 14 62 61 SDA SDO VDD 15 Wireless basestations Synchronous Ethernet 60 SCL XA 16 17 59 C2A XB 58 C1A GND 18 Broadcast video GND PAD 57 GND 19 CS1 C4A NC 20 56 NC INC ALIGN 21 55 DEC NC 22 54 NC 53 NC 23 Description NC 52 NC 24 NC 25 NC 51 47 49 50 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 48 The Si5368 is a jitter-attenuating precision clock multiplier for applications requiring sub 1 ps rms jitter performance. The Si5368 accepts four clock inputs ranging from 2 kHz to 710 MHz and generates five clock outputs ranging from 2 kHz to 945 MHz and select frequencies to 1.4 GHz. The device provides virtually any frequency translation combination across this operating range. The outputs are divided down separately from a common source. The Si5368 input clock frequency and clock multiplication ratio are 2 programmable through an I C or SPI interface. The Si5368 is based on Skyworks Solutions third-generation DSPLL technology, which provides any-frequency synthesis and jitter attenuation in a highly integrated PLL solution that eliminates the need for external VCXO and loop filter components. The DSPLL loop bandwidth is digitally programmable, providing jitter performance optimization at the application level. Operating from a single 1.8, 2.5 ,or 3.3 V supply, the Si5368 is ideal for providing clock multiplication and jitter attenuation in high performance timing applications. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 1, 2021 GND VDD VDD VDD GND CKOUT4+ CKIN4+ CKOUT4 CKIN4 VDD GND NC RATE0 VDD GND CKOUT2 CKIN2+ CKOUT2+ CKIN2 VDD GND CMODE NC VDD GND FS OUT+ CKIN3+ FS OUT CKIN3 VDD GND NC RATE1 VDD CKOUT1+ GND CKOUT1 CKIN1+ VDD CKIN1 GND NC NC VDD CKOUT3 NC CKOUT3+ LOL NC VDDSi5368 Functional Block Diagram Xtal or Refclock CKIN1 N31 CKIN2 N32 NC1 LS CKOUT1 DSPLL N1 HS CKIN3/FSYNC1 N33 NC2 LS CKOUT2 CKIN4 N34 N2 NC3 LS CKOUT3 2 I C/SPI Port Rate Select CKOUT4 NC4 LS Clock Select Skew Control Control NC5 LS CKOUT5/FS OUT FSYNC Realignment Device Interrupt Input Clock 3 VDD (1.8, 2.5, or 3.3 V) Frame sync LOL/LOS/FOS Alarms GND Input Clock 4 mode only Output Clock 2 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 1, 2021