Si5338 2 I C-PROGRAMMABLE ANY-FREQUENCY, ANY-OUTPUT QUAD CLOCK GENERATOR Features Low power MultiSynth technology Single supply core with excellent enables independent, any-frequency PSRR: 1.8, 2.5, 3.3 V synthesis on four differential output Independent frequency increment/ drivers decrement feature enables Highly-configurable output drivers with glitchless frequency adjustments in up to four differential outputs, eight 1 ppm steps single-ended clock outputs, or a Independent phase adjustment on combination of both each of the output drivers with an Low phase jitter of 0.7 ps RMS typ accuracy of <20 ps steps Ordering Information: High precision synthesis allows true Highly configurable spread zero ppm frequency accuracy on all spectrum (SSC) on any output: See page 42. outputs Any frequency from 5 to 350 MHz Flexible input reference: Any spread from 0.5 to 5.0% External crystal: 8 to 30 MHz Any modulation rate from 33 to Pin Assignments CMOS input: 5 to 200 MHz 63 kHz SSTL/HSTL input: 5 to 350 MHz External feedback mode allows zero-delay mode Differential input: 5 to 710 MHz Loss of lock and loss of signal Independently configurable outputs alarms support any frequency or format: 2 LVPECL/LVDS: 0.16 to 710 MHz I C/SMBus compatible interface HCSL: 0.16 to 250 MHz Easy to use programming software CMOS: 0.16 to 200 MHz Small size: 4 x 4 mm, 24-QFN SSTL/HSTL: 0.16 to 350 MHz Low power: 45 mA core supply typ Independent output voltage per driver: Wide temperature range: 40 to 1.5, 1.8, 2.5, or 3.3 V +85 C Applications Ethernet switch/router Any-frequency clock conversion PCI Express 2.0/3.0 MSAN/DSLAM/PON Broadcast video/audio timing Fibre Channel, SAN Processor and FPGA clocking Telecom line cards 1 GbE and 10 GbE Description The Si5338 is a high-performance, low-jitter clock generator capable of synthesizing any frequency on each of the device s four output drivers. This timing IC is capable of replacing up to four different frequency crystal oscillators or operating as a frequency translator. Using its patented MultiSynth technology, the Si5338 allows generation of four independent clocks with 0 ppm precision. Each output clock is independently configurable to support various signal formats and supply voltages. The Si5338 provides low-jitter frequency synthesis in a 2 space-saving 4 x 4 mm QFN package. The device is programmable via an I C/ SMBus-compatible serial interface and supports operation from a 1.8, 2.5, or 2 3.3 V core supply. I C device programming is made easy with the ClockBuilder Desktop software available at www.silabs.com/ClockBuilder. Rev. 1.5 6/15 Copyright 2015 by Silicon Laboratories Si5338Si5338 Functional Block Diagram 2 Rev. 1.5