Transcription of AN1258 - Op Amp Precision Design: PCB Layout Techniques
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AN1258 - Op Amp Precision Design: PCB Layout Techniques
AN1258 . Op Amp Precision design : PCB Layout Techniques Author: Kumen Blake THERMOCOUPLE JUNCTION. Microchip Technology Inc. BEHAVIOR. While thermocouples are a common temperature INTRODUCTION sensor [5], it is not commonly known that every PCB. design includes many unintended thermocouple This application note covers Printed Circuit Board junctions that modify the signal voltages. This section (PCB) effects encountered in high (DC) Precision op covers the physics behind this effect and gives amp circuits. It provides Techniques for improving the practical illustrations. performance, giving more flexibility in solving a given design problem. It demonstrates one important factor necessary to convert a good schematic into a working Seebeck Effect Precision design . When two dissimilar conductors (or semiconductors).
Op Amp Precision Design: PCB Layout Techniques. AN1258 DS01258B-page 2 2009-2012 Microchip Technology Inc. The linearized relationship between temperature and thermoelectric voltage, for small temperature ranges, is given in Equation 1. The Seebeck coefficients for the
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