Design low noise differential circuits using a dual amplifier building block
Philip Karantzalis
Abstract
The LT1567, a low noise operational amplifier and a unity-gain inverter that is an excellent analog building block for designing low noise differential circuits, is described.
Keywords
Operational amplifier
unity-gain inverter
low noise differential circuit
LT1567
Introduction
Many communications systems use differential, low level (400mV to 1V peak-to-peak), analog baseband signals where the baseband circuitry operates from a single low voltage power supply (5V to 3V). Any differential amplifier circuit used for baseband signal conditioning must have very low noise and an output voltage swing that includes most of ...
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