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Clock Jitter Attenuator

封装信息

CAD 模型: View CAD Model
Pkg. Type: CABGA
Pkg. Code: BFG81
Lead Count (#): 81
Pkg. Dimensions (mm): 8.0 x 8.0 x 1.35
Pitch (mm): 0.8

环境和出口类别

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

产品属性

Lead Count (#) 81
Carrier Type Tray
Moisture Sensitivity Level (MSL) 3
Qty. per Reel (#) 0
Qty. per Carrier (#) 360
Pb (Lead) Free Yes
Pb Free Category e1 SnAgCu
Temp. Range (°C) -40 to 85°C
Adjustable Phase Yes
Advanced Features Holdover, Phase Delay, Input Switching, Programmable Clock
Channels (#) 1
Core Voltage (V) 3.3V
DPLL Channels (#) 0
Feedback Divider Resolution (bits) 15
Fractional Output Dividers (#) 1
Frequency Plan 2949.12 / Output_Divider, 2457.6 / Output_Divider, 2500 / Output_Divider
Input Freq (MHz) 0.008 - 307.2
Input Redundancy Input Monitor, Auto-switch, Manual switch, Revertive and non-revertive switch, Holdover
Input Ref. Divider Resolution (bits) 15
Input Type LVDS, LVPECL
Inputs (#) 2
JESD204B/C Compliant No
Length (mm) 8
MOQ 360
Noise Floor (dBc/Hz) -158.7
Output Banks (#) 5
Output Divider Resolution (bits) 8
Output Freq Range (MHz) 15.36 - 2949.12
Output Skew (ps) 28
Output Type LVDS, LVPECL
Output Voltage (V) 3.3V
Outputs (#) 11
Package Area (mm²) 64
Phase Jitter Typ RMS (fs) 75
Phase Jitter Typ RMS (ps) 0.075
Phase Noise Supports GSM Yes
Pitch (mm) 0.8
Pkg. Dimensions (mm) 8.0 x 8.0 x 1.35
Pkg. Type CABGA
Product Category FemtoClock 2
Prog. Clock Yes
Requires Terms and Conditions Does not require acceptance of Terms and Conditions
Supply Voltage (V) 3.3 - 3.3
Synthesis Mode Integer
Tape & Reel No
Thickness (mm) 1.35
Width (mm) 8
已发布 No

描述

The 8V19N472 is a fully integrated FemtoClock NG Jitter Attenuator and Clock Synthesizer designed as a high-performance clock solution for conditioning and frequency/phase management of wireless base station radio equipment boards. The device is optimized to deliver excellent phase noise performance as required in GSM, WCDMA, LTE, and LTE-A radio board implementations.

A two-stage PLL architecture supports both jitter attenuation and frequency multiplication. The first stage PLL is the jitter attenuator and uses an external VCXO for best possible phase noise characteristics. The second stage PLL locks on the VCXO-PLL output signal and synthesizes the target frequency. This PLL has two VCO circuits at 2949.12MHz and 2400–2500MHz, respectively, for enhanced frequency flexibility.

The device generates the output clock signals from the selected VCO by frequency division. Five independent frequency dividers are available, four support integer-divider ratios and one integer as well as fractional-divider ratios. Delay circuits can be used for achieving alignment and controlled phase delay between clock signals. The two redundant inputs are monitored for activity. Four selectable clock switching modes are provided to handle clock input failure scenarios. Auto-lock, individually programmable output frequency dividers, and phase adjustment capabilities are added for flexibility.

The 8V19N472 is configured through an SPI interface and reports lock and signal loss status in internal registers and via a lock detect (LOCK) output. Internal status bit changes can also be reported via the nINT output. The device is ideal for driving converter circuits in wireless infrastructure, radar/imaging, and instrumentation/medical applications. The device is a member of the high-performance clock family from IDT.

For information regarding evaluation boards and material, please contact your local sales representative.