CS5451

2

DS458PP4

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 3

ANALOG CHARACTERISTICS ................................................................................................ 3

ANALOG CHARACTERISITCS ................................................................................................ 4

DIGITAL CHARACTERISTICS ................................................................................................. 4

RECOMMENDED OPERATING CONDITIONS ....................................................................... 5

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 5

SWITCHING CHARACTERISTICS .......................................................................................... 6

2. GENERAL DESCRIPTION ....................................................................................................... 7

2.1 Theory of Operation ........................................................................................................... 7

2.2 Performing Measurements ................................................................................................. 8

2.3 High Rate Digital Filters ..................................................................................................... 8

2.4 Serial Interface ................................................................................................................... 8

2.5 System Initialization ........................................................................................................... 9

2.6 Analog Inputs ..................................................................................................................... 9

2.7 Voltage Reference ............................................................................................................. 9

2.8 Power Supply ..................................................................................................................... 9

2.9 PCB Layout ...................................................................................................................... 10

3. PIN DESCRIPTION ................................................................................................................. 11

4. PACKAGE DIMENSIONS........................................................................................................ 13

LIST OF FIGURES

Figure 1. Serial Port Timing............................................................................................................. 6

Figure 2. Typical Connection Diagram ............................................................................................7

Figure 3. Serial Port Data Transfer ................................................................................................. 8

Figure 4. Close-up of One Data Frame ........................................................................................... 9

Figure 5. Generating VA- with a Charge Pump............................................................................. 10

Contacting Cirrus Logic Support

For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:

http://www.cirrus.com/corporate/contacts/

Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-

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

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