AN-1719 Datasheet, PDF (1/6 Pages) Texas Instruments – AN-1719 Noise Figure Analysis Fully Differential Amplifier

Application Report
SNOA506A – September 2007 – Revised May 2013
AN-1719 Noise Figure Analysis Fully Differential Amplifier
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ABSTRACT
This application note provides noise figure analysis for fully differential amplifiers, including output noise
calculation and noise figure calculation.
Contents
1 Introduction .................................................................................................................. 2
2 Output Noise Calculation for Fully Differential Amplifiers .............................................................. 3
3 Noise Figure Calculation for Fully Differential Amplifiers .............................................................. 4
4 Conclusion ................................................................................................................... 5
List of Figures
1 Simplified Conceptual Diagram of Fully Differential Amplifier......................................................... 2
2 Fully Differential Amplifier Noise Model .................................................................................. 3
3 Noise Analysis Example for Av=1 ........................................................................................ 4
4 Noise Figure and Voltage Noise Spectral Density vs Gain............................................................ 5
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SNOA506A – September 2007 – Revised May 2013
AN-1719 Noise Figure Analysis Fully Differential Amplifier
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