CS5540

2

DS503PP1

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4

2. GENERAL DESCRIPTION ..................................................................................................... 10

2.1 Analog Input ..................................................................................................................... 10

2.1.1 Analog Input Model ............................................................................................. 10

2.2 Voltage Reference Input .................................................................................................. 11

2.2.1 Voltage Reference Input Model ........................................................................... 11

2.3 Power Supply Arrangements ........................................................................................... 12

2.4 Clock Generator ............................................................................................................... 12

2.5 Serial Port Interface ......................................................................................................... 12

2.6 Input Channel Selector .................................................................................................... 12

2.6.1 Switching Channels ............................................................................................. 13

2.7 Serial Port and Data Conversions .................................................................................... 13

2.7.1 Reading Conversions .......................................................................................... 14

2.7.2 Output Coding ..................................................................................................... 14

2.7.3 Digital Filter ......................................................................................................... 14

2.8 Sleep Mode ...................................................................................................................... 15

2.9 Power-Up and Initialization .............................................................................................. 16

2.10 PCB Layout .................................................................................................................... 16

3. PIN DESCRIPTIONS .............................................................................................................. 17

4. SPECIFICATION DEFINITIONS ............................................................................................. 19

5. PACKAGE DIMENSIONS ...................................................................................................... 20

Contacting Cirrus Logic Support

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Microwire is a trademark of National Semiconductor Corp.

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mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the informa-

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