DESCRIPTION

· The Si5338 is a high-performance, low-jitter clock generator capable of synthesizing any frequency on each of its four output drivers. It can replace up to four different frequency crystal oscillators or operate as a frequency translator. Using MultiSynth™ technology, it generates four independent clocks with 0 ppm precision. The device is programmable via an I2C/SMBus-compatible serial interface and supports operation from a 1.8, 2.5, or 3.3 V core supply. It comes in a 4 x 4 mm QFN package.

FEATURES

· Low power MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers.
· PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant.
· Highly-configurable output drivers with up to four differential outputs, eight single-ended clock outputs, or a combination of both.
· Low phase jitter of 0.7 ps RMS typ.
· High precision synthesis allows true zero ppm frequency accuracy on all outputs.
· Flexible input reference: External crystal (8 to 30 MHz), CMOS input (5 to 200 MHz), SSTL/HSTL input (5 to 350 MHz), Differential input (5 to 710 MHz).
· Independently configurable outputs support any frequency or format: LVPECL/LVDS (0.16 to 710 MHz), HCSL (0.16 to 250 MHz), CMOS (0.16 to 200 MHz), SSTL/HSTL (0.16 to 350 MHz).
· Independent output voltage per driver: 1.5, 1.8, 2.5, or 3.3 V.
· Single supply core with excellent PSRR: 1.8, 2.5, 3.3 V.
· Independent frequency increment/decrement feature enables glitchless frequency adjustments in 1 ppm steps.
· Independent phase adjustment on each of the output drivers with an accuracy of < 20 ps steps.
· Highly configurable spread spectrum (SSC) on any output: Any frequency from 5 to 350 MHz, Any spread from 0.5 to 5.0%, Any modulation rate from 33 to 63 kHz.
· External feedback mode allows zero-delay mode.
· Loss of lock and loss of signal alarms.
· I2C/SMBus compatible interface.
· Easy to use programming software.
· Small size: 4 x 4 mm, 24-QFN.
· Low power: 45 mA core supply typ.
· Wide temperature range: –40 to +85 °C.

APPLICATIONS

· Ethernet switch/router.
· PCIe Gen1/2/3/4.
· Broadcast video/audio timing.
· Processor and FPGA clocking.
· Any-frequency clock conversion.
· MSAN/DSLAM/PON.
· Fibre Channel, SAN.
· Telecom line cards.
· 1 GbE and 10 GbE.