Part Number
|
LMX2471 |
Manufacturer
|
National Semiconductor |
Description
|
3.6 GHz Delta-Sigma Fractional-N PLL |
Published
|
Apr 25, 2005 |
Detailed Description
|
LMX2471 3.6 GHz Delta-Sigma Fractional-N PLL with 1.7 GHz Integer-N PLL
November 2003
LMX2471 3.6 GHz Delta-Sigma Frac...
|
Datasheet
|
LMX2471
|
Overview
LMX2471 3.
6 GHz Delta-Sigma Fractional-N PLL with 1.
7 GHz Integer-N PLL
November 2003
LMX2471 3.
6 GHz Delta-Sigma Fractional-N PLL with 1.
7 GHz Integer-N PLL
General Description
The LMX2471 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL.
The device is fabricated using National Semiconductor’s advanced BiCMOS process.
With delta-sigma architecture, fractional spur compensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter.
Fractional spurs at lower frequencies are pushed to higher frequencies outside the loop bandwidth.
Unlike analog compensation, the digital fe...
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