Home > 1.ANALOG, Voltage references > Understanding Voltage-Reference Topologies and Specifications

Understanding Voltage-Reference Topologies and Specifications


Abstract: This document covers the three most popular topologies of voltage references. These include bandgap and buried zener topologies in three-terminal series voltage references and zener topologies in two-terminal shunt voltage references. Also demystified are the definitions of common voltage reference parameters.

The first considerations in choosing a voltage reference are output voltage and initial accuracy. Often overlooked, however, are the various other data-sheet parameters that can assume major importance in specific applications. The following discussion of voltage-reference basics will help you better understand the performance parameters associated with the most common voltage-reference topologies: the two-terminal shunt and the three-terminal series designs.

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