SKYWORKS SI5342H-D-GMR

This specialized jitter attenuating clock multiplier combines fourth-generation DSPLL with ultra-low phase jitter and MultiSynth™ technologies to enable high data rate coherent optical transceiver design. Up to four outputs can be assigned to High Frequency Mode capable of up to 2.75 GHz at 50 fs-rms typical phase jitter (1 MHz - 40 MHz). Each output may also be configured as MultiSynth Mode any-frequency outputs when added frequency flexibility is required, such as clocking Forward Error Correction (FEC) while still delivering < 150 fs-rms typical phase jitter (12 kHz - 20 MHz). The Si5344H and Si5342H also feature DCO control with as low as 0.001 ppb step control and locks to gapped clock inputs. These devices are programmable via a serial interface with in-circuit programmable non-volatile memory (NVM) so that they always power up with a known frequency configuration. The loop filter is fully integrated on-chip eliminating the risk of potential noise coupling associated with discrete solutions. Programming the Si5342H/44H is made easy with Skyworks Solutions’ ClockBuilder Pro software. Factory preprogrammed devices are also available.

• High-speed outputs generate an ultra-low jitter output up to 2.75 GHz
• Up to four Multi-Synth outputs generate any frequency up to 717.5 MHz
• Input frequency range: 8 kHz to 750 MHz
• Maximum Output frequency:
  • High-Frequency Mode: 2.75 GHz
  • MultiSynth Mode: 717.5 MHz
• Jitter performance:
  • High Frequency Mode: < 50 fs typ (1 MHz–40 MHz)
  • MultiSynth Mode: < 150 fs typ (12 kHz - 20 MHz)
• Programmable jitter attenuation bandwidth: 10 Hz to 4 kHz
• Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL with programmable voltage swing and common mode
• LVPECL-only in High Frequency Mode
• Status monitoring (LOS, OOF, LOL)
• Hitless input clock switching: automatic or manual
• Automatic free-run and holdover modes
• Glitchless on the fly output frequency changes
• Locks to gapped clock inputs
• DCO mode: as low as 0.001 ppb steps
• Core voltage:
  • VDD: 1.8 V ±5%
  • VDDA: 3.3 V ±5%
• Independent output supply pins: 3.3 V, 2.5 V, or 1.8 V
• Serial interface: I²C or SPI
• In-circuit programmable with non-volatile OTP memory
• ClockBuilder Pro software simplifies device configuration
• Temperature range: –40 to +85 °C
• Pb-free, RoHS-6 compliant

• 100G/200G/400G Optical Transceivers
• Wireless base-stations