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8V49NS0312 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 8V49NS0312
部品説明 Clock Generator
メーカ Integrated Device Technology
ロゴ Integrated Device Technology ロゴ 



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8V49NS0312 Datasheet, 8V49NS0312 PDF,ピン配置, 機能
FemtoClock® NG Clock Generator
with 4 Dividers
8V49NS0312
Datasheet
General Description
The 8V49NS0312 is a Clock Generator with four output dividers:
three integer and one that is either integer or fractional. When used
with an external crystal, the 8V49NS0312 generates high perfor-
mance timing geared towards the communications and datacom
markets, especially for applications demanding extremely low phase
noise, such as 10, 40 and 100GE.
The 8V49NS0312 provides versatile frequency configurations and
output formats and is optimized to deliver excellent phase noise
performance. The device delivers an optimum combination of high
clock frequency and low phase noise performance, combined with
high power supply noise rejection.
The 8V49NS0312 supports two types of output levels: LVPECL or
LVDS on eleven of its outputs. In addition there is a single LVCMOS
output that has the option of providing a generated clock or acting as
a reference bypass output.
The device can be configured to deliver specific output
configurations under pin control only or additional configurations
through an I2C serial interface.
It is offered in a lead-free (RoHS6) 64-pin VFQFN package.
Features
Eleven differential LVPECL, LVDS outputs with programmable
voltage swings
One LVCMOS output
— Input reference maybe bypassed to this output
The clock input operates in full differential mode (LVDS, LVPECL)
or single-ended LVCMOS mode
Driven from a crystal or differential clock input
2.4-2.5GHz PLL frequency range supports Ethernet, SONET and
CPRI frequency plans
Four Integer output dividers with a range of output divide ratios
(see Table 7)
One Fractional Output divider can generate any desired output
frequency
Support of output power-down
Excellent clock output phase noise
Offset Output Frequency Single-side Band Phase Noise
100kHz
156.25MHz
-143dBc/Hz
Phase Noise RMS, 156.25MHz, 12kHz to 20MHz integration
range: 110fs (maximum)
Select configurations may be controlled via the use of control
input pins without need for serial port access
LVCMOS compatible I2C serial interface gives access to
additional configurations either alone or in combination with the
control input pins
Single 3.3V supply voltage
Lead-free (RoHS 6) 64-pin VFQFN packaging
-40°C to 85°C ambient operating temperature
©2016 Integrated Device Technology, Inc.
1
September 2, 2016

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