Si5351A/B/C-B 2 I C-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GENERATOR + VCXO Features www.silabs.com/custom-timing Glitchless frequency changes 10-MSOP Generates up to 8 non-integer-related Separate voltage supply pins provide frequencies from 2.5 kHz to 200 MHz level translation: 2 Core VDD: 2.5 or 3.3 V I C user definable configuration Output VDDO: 1.8, 2.5, or 3.3 V Exact frequency synthesis at each output Excellent PSRR eliminates external (0 ppm error) power supply filtering Highly linear VCXO Very low power consumption Optional clock input (CLKIN) 20-QFN Adjustable output delay Low output period jitter: < 70 ps pp, typ Available in 2 packages types: Configurable spread spectrum selectable 10-MSOP: 3 outputs at each output 20-QFN (4x4 mm): 8 outputs Operates from a low-cost, fixed frequency crystal: 25 or 27 MHz PCIE Gen 1 compatible Supports static phase offset Supports HCSL compatible swing Ordering Information: Programmable rise/fall time control See page 29 Applications HDTV, DVD/Blu-ray, set-top box Residential gateways Audio/video equipment, gaming Networking/communication Printers, scanners, projectors Servers, storage Handheld Instrumentation XO replacement Description 2 The Si5351 is an I C configurable clock generator that is ideally suited for replacing crystals, crystal oscillators, VCXOs, phase-locked loops (PLLs), and fanout buffers in cost-sensitive applications. Based on a PLL/VCXO + high resolution MultiSynth fractional divider architecture, the Si5351 can generate any frequency up to 200 MHz on each of its outputs with 0 ppm error. Three versions of the Si5351 are available to meet a wide variety of applications. The Si5351A generates up to 8 free-running clocks using an internal oscillator for replacing crystals and crystal oscillators. The Si5351B adds an internal VCXO and provides the flexibility to replace both free-running clocks and synchronous clocks. It eliminates the need for higher cost, custom pullable crystals while providing reliable operation over a wide tuning range. The Si5351C offers the same flexibility but synchronizes to an external reference clock (CLKIN). Functional Block Diagram Si5351C (20-QFN) Si5351B (20-QFN) VDDOA VDDOA MultiSynth MultiSynth R0 XA R0 0 CLK0 XA 0 CLK0 PLL PLL OSC OSC MultiSynth CLK1 A MultiSynth CLK1 R1 XB R1 XB 1 1 VDDOB VDDOB MultiSynth MultiSynth VCXO PLL R2 R2 2 CLK2 2 CLK2 B CLKIN VC MultiSynth CLK3 MultiSynth CLK3 R3 R3 3 3 VDDOC VDDOC MultiSynth MultiSynth R4 R4 SDA CLK4 4 SDA CLK4 4 2 2 I C SCL I C MultiSynth CLK5 MultiSynth CLK5 SCL R5 R5 5 5 INTR VDDOD VDDOD MultiSynth MultiSynth R6 OEB R6 6 CLK6 Control 6 CLK6 Control OEB Logic MultiSynth CLK7 SSEN MultiSynth CLK7 Logic R7 R7 7 7 Rev. 1.1 9/18 Copyright 2018 by Silicon Laboratories Si5351A/B/C-BSi5351A/B/C-B Table 1. The Complete Si5350/51 Clock Generator Family Part Number I2C or Pin Frequency Reference Programmed Outputs Datasheet I2C XTAL only Blank 3 Si5351-B Si5351A-B-GT I2C XTAL only Blank 8 Si5351-B Si5351A-B-GM I2C XTAL and/or Voltage Blank 8 Si5351-B Si5351B-B-GM I2C XTAL and/or CLKIN Blank 8 Si5351-B Si5351C-B-GM I2C XTAL only Factory Pre-Programmed 3 Si5351-B Si5351A-Bxxxxx-GT I2C XTAL only Factory Pre-Programmed 8 Si5351-B Si5351A-Bxxxxx-GM I2C XTAL and/or Voltage Factory Pre-Programmed 8 Si5351-B Si5351B-Bxxxxx-GM I2C XTAL and/or CLKIN Factory Pre-Programmed 8 Si5351-B Si5351C-Bxxxxx-GM Pin XTAL only Factory Pre-Programmed 3 Si5350A-B Si5350A-Bxxxxx-GT Pin XTAL only Factory Pre-Programmed 8 Si5350A-B Si5350A-Bxxxxx-GM Pin XTAL and/or Voltage Factory Pre-Programmed 3 Si5350B-B Si5350B-Bxxxxx-GT Pin XTAL and/or Voltage Factory Pre-Programmed 8 Si5350B-B Si5350B-Bxxxxx-GM Pin XTAL and/or CLKIN Factory Pre-Programmed 3 Si5350C-B Si5350C-Bxxxxx-GT Pin XTAL and/or CLKIN Factory Pre-Programmed 8 Si5350C-B Si5350C-Bxxxxx-GM Notes: 1. XTAL = 25/27 MHz, Voltage = 0 to VDD, CLKIN = 10 to 100 MHz.xxxx = unique custom code. 2. Create custom, factory pre-programmed parts at www.silabs.com/ClockBuilder. 2 Rev. 1.1