ZL30644A Series

4-Channel Line Card Synchronizer with eToD Interface

Catalog

4-Channel Line Card Synchronizer with eToD Interface

Part	Output	Package / Case	Mounting Type	PLL	Supplier Device Package	Input	Voltage - Supply	Number of Circuits	Ratio - Input:Output [custom]	Divider/Multiplier	Operating Temperature [Max]	Operating Temperature [Min]	Differential - Input:Output [custom]	Differential - Input:Output [custom]
Microchip Technology ZL30644ALDG1	CMOS	64-VFQFN Exposed Pad	Surface Mount		64-VQFN (9x9)	Differential or Single-Ended	1.8 V, 3.3 V	1	10:10		85 °C	-40 °C

Catalog

4-Channel Line Card Synchronizer with eToD Interface

Key Features

• Highlights* Ultra Precise Timing for 5G Radio Access Networks

• * Four independent DPLL clock channels plus three additional DPLLs for NCO Hybrid, Split XO and redundant oscillator modes

• * Five output synthesizers

• * Any-to-any frequency conversion per channel

• * Inputs: up to 10 differential or single-ended

• * Outputs: up to 10 differential, up to 20 CMOS

• * Output jitter 100 fs RMS typical for 156.25 MHz 12 kHz to 20 MHz

• * Core power consumption <0.9W

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• Physical-layer frequency synchronization* Hitless reference switching

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• General Features* Automatic self-configuration at power-up from internal Flash memory, 7 configurations

• * Input-to-output alignment <100 ps

• * Numerically controlled oscillator behavior in each DPLL and each synthesizer

• * Easy-to-configure design requires no external VCXO or loop filter components

• * 5 GPIO pins with many possible behaviors, each REF can be GPI, each OUT can be GPO

• * SPI or I2C processor Interface

• * 1.8V and 3.3V core VDD voltages

• * Easy-to-use evaluation/programming software

• * MiToDSync 1-wire time-of-day interface in/out

• * MiToDBasic 3-wire time-of-day interface out

Description

The ZL30644A is a feature-rich line card solution with up to seven independent DPLLs, five extremely low output jitter synthesizers and embedded time-of-day (eToD) features. The eToD features include a 3-wire MiToDBasic output interface and a 1-wire MiToDSync input/output interface.This solution is ideal for line card timing applications such as routers, switches, optical transparent network and 4G/5G wireless base stations. We also have ZL3063x as SyncE Timing Card Synchronizer, such as [**ZL30634A**](https://www.microchip.com/en-us/product/zl30634a), or ZL3073x as SyncE&1588 Timing Card Synchronizer, such as [**ZL30735A**](https://www.microchip.com/en-us/product/zl30735a), to form full SyncE&IEEE1588 Timing solution.