sales@hkmjd.com
Service Telephone:86-755-83294757
Trade Name:PLLs, Frequency Synthesizers
Brand:Renesas
Particular Year:25+
Package:56-VFQFN
Delivery Date:New and original
Stock: 2000pcs
The 8T49N287A-040NLGI is a FemtoClock® NG eight-channel frequency converter with two fractional feedback PLLS, which can be used as a jitter attenuator and frequency converter. With a six-integer and two-decimal output divider, this frequency converter can generate up to eight different output frequencies (8kHz to 1GHz). Eight different outputs can be selected among LVPECL, LVCMOS, LVDS or HCSL output levels. The following are the key features:
Supports SDH/SONET and synchronous Ethernet clocks, including all FEC rate conversions
Jitter: <0.3ps RMS (typical value, including spurious, 12kHz to 20MHz)
Lock to input signal, hold and freely run working modes
The initial hold accuracy is +50ppb
Up to two LVPECL, LVDS, LVHSTL, HCSL or LVCMOS input clocks are accepted:
The accepted frequency range is from 8kHz to 875MHz
Automatic and manual input clock selection, uninterrupted switching
Clock input monitoring, including support for intermittent clock speeds
The phase slope limit and the completely uninterrupted switching option can control the output clock phase transients
It operates with a basic mode crystal ranging from 10MHz to 40MHz
Generate 8 LVPECL/LVDS/HCSL or 16 LVCMOS output clocks:
The output frequency range is from 8kHz to 1.0GHz (differential)
The output frequency range is from 8kHz to 250MHz (LVCMOS)
Four general-purpose I/O (GPIO) pins with optional status and control support:
Four output enable control inputs can be mapped to any one of the eight outputs
Lock, hold and signal loss status output
Open leak interrupt pin
Nine programmable loop bandwidth Settings for each PLL: 1.4Hz to 360Hz
Optional quick lock function
Programmable output phase delay, with a step size as small as 16ps
Registers can be programmed via I2C or an external I2C EEPROM
Bypass clock path for system testing
Ambient operating temperature: -40°C to 85°C
56QFN lead-free (RoHS 6) package
The 8T49N287A-040NLGI frequency converter supports uninterrupted reference switching between input clocks. These frequency converters can monitor the signal loss (LOS) of all input clocks and issue an alarm when an input clock failure is detected. Typical applications include 1G, 10G, 40G and 100G synchronous Ethernet, SONET/SDH, baseband of wireless base stations, data communication and OTN decommapping.
Model
Brand
Package
Quantity
Describe
Renesas
72-VFQFN
2000
FemtoClock NG Universal Frequency Translator (4-in/2-PLL/8-out)
Renesas
VFQFN-56
2000
FemtoClock Crystal-to-Differential HCSL/LVCMOS Frequency Synthesizer
Renesas
56-VFQFPN
2500
FemtoClock NG dual-channel universal Frequency Converter (2-in/2-PLL/8-out)
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