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Synchronous Ethernet PLL

Package Information

CAD Model: View CAD Model
Pkg. Type: VFQFPN
Pkg. Code: NLG72
Lead Count (#): 72
Pkg. Dimensions (mm): 10.0 x 10.0 x 1.0
Pitch (mm): 0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090

Product Attributes

Lead Count (#) 72
Carrier Type Reel
Moisture Sensitivity Level (MSL) 3
Qty. per Reel (#) 2500
Qty. per Carrier (#) 0
Pb (Lead) Free Yes
Pb Free Category e3 Sn
Temp. Range (°C) 0 to 70°C
Country of Assembly CHINA
Country of Wafer Fabrication TAIWAN
Advanced Features Microprocessor interface modes, JTAG boundary scan
Core Voltage (V) 3.3
Fractional Output Dividers (#) 3
Input Freq (MHz) 1 - 625
Input Type LVPECL, LVCMOS, LVDS
Inputs (#) 3
Length (mm) 10
Loop Bandwidth Range (Hz) 15 - 560
MOQ 2500
Output Banks (#) 3
Output Freq Range (MHz) 1 - 644.531
Output Type LVPECL, LVCMOS, LVDS
Output Voltage (V) 3.3
Outputs (#) 3
Package Area (mm²) 100
Phase Jitter Typ RMS (ps) 1
Pitch (mm) 0.5
Pkg. Dimensions (mm) 10.0 x 10.0 x 1.0
Pkg. Type VFQFPN
Product Category FemtoClock NG
Published No
Reel Size (in) 13
Requires Terms and Conditions Does not require acceptance of Terms and Conditions
Tape & Reel Yes
Thickness (mm) 1
Width (mm) 10
Xtal Freq (KHz) 12800 - 12800

Description

The 8V89307 is an integrated solution for the Synchronous Equipment Timing Source supporting EEC-Option1 and EEC-Option2 clocks in Synchronous Ethernet equipment. The device has a high-quality DPLL to provide system clocks for node timing synchronization within a Synchronous Ethernet network. It also integrates an APLL for better jitter performance.

An input clock is automatically or manually selected. It supports three primary operating modes: Free-Run, Locked, and Holdover. In Free-Run mode, the DPLL refers to the master clock. In Locked mode, the DPLL locks to the selected input clock. In Holdover mode, the DPLL resorts to the frequency data acquired in Locked mode. Whatever the operating mode is, the DPLL gives a stable performance without being affected by operating conditions or silicon process variations.

The device provides programmable DPLL bandwidths: 15MHz to 560Hz and damping factors: 1.2 to 20 in 5 steps. Different settings cover all clock synchronization requirements.

A stable oscillator is required for the master clock in different applications. The master clock is used as a reference clock for all the internal circuits in the device. It can be calibrated within ±741ppm.

All the read/write registers are accessed through a microprocessor interface. The device supports Serial and I2C interfaces.