Transcription of A Low-Noise High Power Supply Rejection Low Dropout ...
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A Low-Noise High Power Supply Rejection Low Dropout ...
A Low-Noise high Power Supply Rejection Low Dropout Regulator for wireless system -on-Chip Applications SIEW KUOK HOON. wireless Analog Technology Center Texas Instruments Inc. Dallas, Texas Outline of Presentation Motivation Conventional Low Dropout Regulator (LDO). Power Supply Rejection Improvement Noise Analysis Experimental Results Conclusion Motivation high Performance LDO : high Power Supply Rejection Low Noise Good Transient Performance. Example of application : RF LDOs in wireless cellular phone. In wireless system -on-Chip(SoC), multiple RF LDOs co-exist. Conventional Low Dropout Regulator (LDO). VDD (Battery Supply , ). VBG (Voltage Reference). ( ). + Pass Element A1. (PMOSFET). - VOUT (Output, ). R1. ILOAD. Resistor feedback (Load Current, network R2 0 to 100mA). CL (Output Capacitor, 1uF). & assoc. ESR res ( Ohms). R1 1 A p1 . VOUT = VBG 1 + . = +. 1.
A Low-Noise High Power Supply Rejection Low Dropout Regulator for Wireless System-on-Chip Applications SIEW KUOK HOON siewkh@ti.com Wireless Analog Technology Center Texas Instruments Inc. Dallas, Texas. Outline of Presentation ... – High Power Supply Rejection
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