Skyworks Solutions Inc. Si5348 Network Synchronizer Clock
Skyworks Solutions Inc. Si5348 Network Synchronizer Clock is a small, low-power network synchronizer clock with unmatched frequency synthesis flexibility and an ultralow jitter. The Si5348 is ideal for wireless backhaul, IP radio, small and macro cell wireless communications systems, and data center switches requiring traditional and packet-based network synchronization. The three independent DSPLLs™ are individually configurable as a SyncE PLL, IEEE 1588 DCO, or a general-purpose PLL for processor/FPGA clocking.
The Si5348 can also be used in legacy SETS systems needing Stratum 3/3E compliance. The optional digitally controlled oscillator (DCO) mode provides precise timing adjustment to 1 ppt for 1588 (PTP) clock steering applications. The unique design of the Si5348 allows the TCXO/OCXO reference input to determine the device’s frequency accuracy and stability. The Si5348 is programmable via a serial interface with in-circuit programmable non-volatile memory, so it always powers up into a known configuration. Programming the Si5348 is easy with ClockBuilder Pro™ software. Factory pre-programmed devices are also available.
Features
- Three independent DSPLLs in a single monolithic IC supporting flexible SyncE/IEEE 1588 and SETS architectures
- Ultra-low jitter of 95fs
- Enhanced hitless switching minimizes output phase transients
- Input frequency range:
- External crystal: 48 to 54MHz
- REF clock: 5 to 250MHz
- Diff clock: 8kHz to 750MHz
- LVCMOS clock: 8kHz to 250MHz
- Output frequency range:
- Differential: 1 PPS to 718.5MHz
- LVCMOS: 1 PPS to 250MHz
- Meets the requirements of:
- ITU-T G.8262 (SyncE) EEC Options 1 and 2
- ITU-T G.812 Type III, IV
- ITU-T G.813 Option 1
- Telcordia GR-1244, GR-253 (Stratum-3/3E)
Applications
- Synchronous Ethernet (SyncE) ITU-T G.8262 EEC Option 1 & 2
- Telecom Boundary Clock (T-BC) as defined by ITU-T G.8273.2
- IEEE 1588 (PTP) slave clock synchronization
- Stratum 3/3E, G.812, G.813 network synchronization
Block Diagram
Related Products
Skyworks Solutions Inc. Si5348 Network Synchronizer Clock Development Kit
Used to move from ClockBuilder Pro device configuration to hands-on performance evaluation.