Catalog
2-Ch SyncE Line Card Synchronizer
Key Features
• * Up to two independent clock channels
• * Excellent jitter performance of 180 fs RMS in 12 kHz to 20 MHz band meets jitter requirements of 10G/40G and 100G PHYs
• * Three programmable ultra-low jitter synthesizers generate any frequency from 0.5 Hz to 900 MHz
• * One programmable general purpose synthesizer generates any clock from 0.5 Hz to 180 MHz
• * 6 differential (CML) or 12 single ended (CMOS) ultra-low jitter outputs plus two general purpose CMOS outputs
• * Accepts up to 10 LVPECL/LVDS/HCSL/LVCMOS inputs
• * Any input reference can be fed with clock, sync (frame pulse), clock /sync pair or clock modulated with sync pulse (embedded PPS ePPS and embedded PP2S ePP2S)
• * Up to four programmable digital PLLs/NCOs with loop bandwidth from 14 Hz to 470 Hz synchronize to any clock rate from 1 kHz to 900 MHz and to clock plus sync pulse
• * Automatic hitless reference switching and digital holdover on reference fail with initial holdover accuracy better than 1 ppb with post holdover filter
• * Easy Configuration and dynamic programming via SPI/I2C interface
• * Operates from a single crystal resonator or clock oscillator
Description
AI
[ZL30642B](https://www.microchip.com/en-us/product/ZL30642B) is recommended as the replacement for new designs.
The ZL30612 offers two DPLL channels of Synchronous Ethernet (SyncE) clock translation. Fourth generation timing technology provides one third the jitter of the previous generation devices with a 40% smaller footprint. Excellent jitter performance makes this device ideally suited for SyncE/Sonet/SDH timing and line card applications needing to support 10G/40G and 100G PHYs. Features supported include hitless reference switching between active and redundant timing cards, frequency translation from backplane clock to frequencies required by PHY devices, jitter filtering, and holdover in case both active and redundant timing cards fail.
Log in to our [MyMicrochip](https://login.microchip.com/ssologin/Account/Login?ReturnUrl=%2Fssologin%2Fconnect%2Fauthorize%2Fcallback%3Fclient_id%3DAuthenticatedUserapi%26redirect_uri%3Dhttps%253A%252F%252Fwww.microchip.com%252Fmymicrochip%252F%2523%252Fcallback%26response_type%3Dcode%26scope%3Dopenid%2520profile%2520AuthenticatedUserapi%26state%3Dd0743a67132a4f7cabf87766498ef7a5%26code_challenge%3D7VwT2FZLyz0rJZj7k5oY1o1voVEo9eQaaVmfjNzodVQ%26code_challenge_method%3DS256%26response_mode%3Dquery) account (with SDE enabled) and request for data sheet and the following application notes.
AN3467 Crystals and Oscillators for Next Generation Timing Solutions
ZLAN-517 ZL3070X\_60X\_61X\_174 Power Supply Decoupling and Layout Guidelines
ZLAN-527 Assembly and PCB Layout Guidelines for Dual Row aQFN100 Package
ZLAN-600 ZL3060x ZL3061x ZL3070x ZL30174 cycle-to-cycle jitter