ZL30121
SONET/SDH Low Jitter System Synchronizer
Overview
The ZL30121 SONET/SDH System Synchronizer is a highly integrated device that provides the functionality required for synchronizing network equipment. It incorporates two independent DPLLs, each capable of locking to one of eight input references and provides a wide variety of synchronized output clocks and frame pulses. |
Simplified Block Diagram

Typical Applications
- AdvancedTCATMSystems
- Multi-Service Edge Switches or Routers
- Multi-Service Provisioning Platforms (MSPPs)
- Add-Drop Multiplexers (ADMs)
- Wireless/Wireline Gateways
- Wireless Base Stations
- DSLAM /Next Gen DLC
- Core Routers
Features & Benefits
- Supports the requirements of Telcordia GR-253 and GR-1244 for Stratum 3, 4E, 4 and SMC clocks, and the requirements of ITU-T G.781 SETS, G.813 SEC, G.823, G.824, and G.825 clocks
- Internal APLL provides standard output clock frequencies up to 622.08 MHz with jitter < 3 ps RMS suitable for GR-253-CORE OC-12 and G.813 STM-16 interfaces
- Programmable output synthesizers generate clock frequencies from any multiple of 8 kHz up to 77.76 MHz in addition to 2 kHz
- Provides 8 reference inputs which support clock frequencies with any multiples of 8 kHz up to 77.76 MHz in addition to 2 kHz
- Supports master/slave configuration for AdvancedTCATM
- Configurable input to output delay and output to output phase alignment
- Optional external feedback path provides dynamic input to output delay compensation
Resources
Documentation
Design Manuals
Application Notes
- ZLAN-68 - List of Oscillators & Crystals that can be used with Zarlink's PLL, Digital Switches with Embedded PLL & Timing over Packet Devices
- ZLAN-179 Low Jitter Synchronizer Power Supply Decoupling and Layout Practices.pdf
- ZLAN-214 - Configuring the ZL30120 for Ethernet Frequencies.pdf
- ZLAN-200 - Master Slave Configuration in ATCA.pdf
- ZLAN-199-Programming Custom Input References.pdf
Product Previews
Downloads, Firmware and Drivers
- BSDL Files:
- zl30121ggg.bsd
- IBIS Models:
- zl30121.ibs
Applications
Typical Applications
- AdvancedTCATMSystems
- Multi-Service Edge Switches or Routers
- Multi-Service Provisioning Platforms (MSPPs)
- Add-Drop Multiplexers (ADMs)
- Wireless/Wireline Gateways
- Wireless Base Stations
- DSLAM /Next Gen DLC
- Core Routers
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Ordering
Clock Generator 0.008MHz to 77.76MHz Input 77.76MHz Output 100-Pin CABGA Tray
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
Microchip Technology Inc. | .. | .. | .. | .. | Buy Now |
DigiKey | ZL30121GGG2V2-ND | 1 | Tray | No Stock | |
Future Electronics | 6074420 | 260 | Tray | No Stock | |
Future Electronics | 6074420 | 260 | Tray | No Stock | |
Mouser | 494-ZL30121GGG2V2 | 260 | 1 | Tray | Buy Now |