Microchip ATmega16M1 Manual

Microchip Ikke kategoriseret ATmega16M1

Læs gratis den danske manual til Microchip ATmega16M1 (12 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 14 personer og har en gennemsnitlig bedømmelse på 4.6 stjerner ud af 7.5 anmeldelser. Har du et spørgsmål om Microchip ATmega16M1, eller vil du spørge andre brugere om produktet?

Download PDF

Side 1/12

Differential and Single-Ended

ADC

Differential and Single-Ended ADC

Introduction

Author: Kristian Saxrud Bekken, Microchip Technology Inc.

A common requirement for microcontroller applications is the need to sense the real world in one way or another.

This requires bridging the gap between the digital dimension of a microcontroller and the analog realm of the real

world. In most cases, this is accomplished by using a sensor that translates the magnitude of a physical phenomenon

to an analog voltage which is routed to a pin on the microcontroller. Lastly, a dedicated part of the microcontroller

called an analog-to-digital converter, also referred to as an ADC or A/D converter, transforms the analog voltage to a

digital value to be further processed by the microcontroller.

Most analog sensors either output their measured value as a single analog voltage signal or as a difference between

two analog voltage signals. The two concepts are referred to as single-ended signaling and differential signaling,

respectively.

This white paper provides a high-level introduction to A/D conversion of single-ended and differential analog signals

by presenting the main advantages and drawbacks for the two approaches, as well as a selection of common

applications and useful considerations.

Table of Contents

Introduction.....................................................................................................................................................1

1. Single-Ended Operation..........................................................................................................................3

1.1. General Concept.......................................................................................................................... 3

1.2. Advantages and Drawbacks.........................................................................................................3

1.3. Typical Applications......................................................................................................................3

2. Differential Operation.............................................................................................................................. 5

2.1. General Concept.......................................................................................................................... 5

2.2. Advantages and Drawbacks.........................................................................................................6

2.3. Typical Applications......................................................................................................................6

3. Considerations........................................................................................................................................ 7

4. Revision History...................................................................................................................................... 8

The Microchip Website...................................................................................................................................9

Product Change Notification Service..............................................................................................................9

Customer Support.......................................................................................................................................... 9

Product Identification System.......................................................................................................................10

Microchip Devices Code Protection Feature................................................................................................ 10

Legal Notice................................................................................................................................................. 10

Trademarks.................................................................................................................................................. 10

Quality Management System....................................................................................................................... 11

Worldwide Sales and Service.......................................................................................................................12

Differential and Single-Ended ADC