ZL30347
IEEE 1588-2008 Synchronization PLL
Overview
The ZL30347 is a member of a family of footprint-compatible devices offering the full range of features required for timing and synchronization across packet networks. These devices focus on the Clock Recovery, Servo Mechanism and Clock Generation for Synchronization using IEEE-1588. They work seamlessly with Time Stamp solutions from all the major Switch/PHY NPU/CPU vendors. These are the only commercially available single chip devices to offer both packet timing using IEEE-1588 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) capable of driving the physical layer clock with the required very low jitter. The ZL30347 offers a full Stratum 3 DPLL, ideal for Timing Card applications and supports clock recovery over L2 and L3 networks for all wireless applications. |
Simplified Block Diagram

Typical Applications
- Integrated basestation reference clock for air interface for GSM, WCDMA, LTE and WiMAX macro, micro or femtocells
- Mobile Backhaul NID, edge router or access aggregation node
- EPON/GE-PON & GPON OLT
- EPON/GE-PON & GPON ONU/OLT
- DSLAM and RT-DSLAM
Features & Benefits
- Recovers and transmits network synchronization over Ethernet, IP, MPLS networks
- Capable of server, client and Boundary Node operation
- Integrates two separate digital phase locked loops
- Recovers clocks from two independent servers, with hitless switching between packet streams for redundancy
- Hitless switching from Packet to Packet, Packet to Electrical, Electrical to Packet
- Accepts eight input references, and up to three associated low frequency alignment or framing pulses
- Generates up to four separate output clocks at frequencies between 8 kHz and 100 MHz
- Generates two separate Synchronous Ethernet clocks to drive industry standard Ethernet PHY devices at either 25 MHz or 125 MHz
Resources
Documentation
- ZL30347 Short-Form Data Sheet
- ZL30347 Data Sheet
- ZLS30390 IEEE 1588-2008 Protocol Engine Software Datasheet
Software Manuals
- ZLS30390 API Reference Manual
- ZLS3034x API Reference Manual
- ZLS30390 Application User Guide
- ZLS3034x Application User Guide
Application Notes
- ZLAN-252 - Perform IEEE 1588v2 PTP Testing Using the ZLE30320 Kit
- ZLAN-306-Applications of ZLS3034x and ZLS30390 Application Note
- ZLAN-300-Linux Software Porting Guide Application Note
- ZLAN-265 Tracking ToD Information using the ZL30142/43
- ZLAN-212-Low_Jitter_Synchronizer_Power_Supply_Decoupling_and_Layout_Practices- Dec10.pdf
- ZLAN-254 - Generating 156.25 MHz LVPECL and 25 MHz CMOS clocks with ZL3013X/14X/34X devices
- ZLAN-442 Crystals and Oscillators for Next Generation Timing Solutions
Downloads, Firmware and Drivers
- BSDL Files:
- ZL30347 BSDL
- IBIS Models:
- ZL30347 IBIS
Applications
Typical Applications
- Integrated basestation reference clock for air interface for GSM, WCDMA, LTE and WiMAX macro, micro or femtocells
- Mobile Backhaul NID, edge router or access aggregation node
- EPON/GE-PON & GPON OLT
- EPON/GE-PON & GPON ONU/OLT
- DSLAM and RT-DSLAM
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Ordering
ATM/SONET/SDH Support Circuit, 1-Func, PBGA100
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
DigiKey | ZL30347GGG2-ND | .. | Tray | No Stock |