High voltage CMOS amplifier enables high impedance sensing with a single IC
Jon Munson
Abstract
The LTC6090, a unique and versatile high voltage CMOS amplifier that enables simplified high impedance and/or large signal swing, very wide dynamic range amplification solutions, is described.
Keywords
CMOS amplifier
LTC6090
Introduction
Accurately measuring voltages requires minimizing the impact of the instrument connection to the tested circuit. Typical digital voltmeters (DVMs) use 10M resistor networks to keep loading effects to an inconspicuous level, but even this can introduce significant error, particularly in higher voltage circuits that involve high resistances.
The solution is to use high impedance amplifiers in ...
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