CS5541 データシートの表示（PDF） - Cirrus Logic

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CS5541

Low-Power, Low-Voltage, 24-Bit ∆Σ ADC

Cirrus Logic 

CS5541

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 Serial Port ........................................................................................................................ 13

2.7 Serial Port Initialization Sequence ................................................................................... 14

2.8 Command Register Quick Reference ............................................................................. 15

2.9 Performing Conversions/Calibrations .............................................................................. 16

2.9.1 Continuous Calibrations and Conversions (reduced output rate) ....................... 16

2.9.2 One Time Calibration followed by Continuous Conversions ............................... 17

2.9.3 Continuous Conversions with Default Calibration Coefficients ........................... 17

2.9.4 Continuous Conversions with Existing Calibration Coefficients .......................... 17

2.9.5 System Calibration .............................................................................................. 17

2.9.6 Reading Conversions .......................................................................................... 17

2.9.7 Output Coding ..................................................................................................... 18

2.9.8 Digital Filter ......................................................................................................... 18

2.10 Sleep and Standby Modes ............................................................................................. 20

2.11 Power-Up Sequence and Initialization ........................................................................... 20

2.12 PCB Layout .................................................................................................................... 20

3. PIN DESCRIPTIONS .............................................................................................................. 22

4. SPECIFICATION DEFINITIONS ............................................................................................. 24

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/

SPI is a trademark of Motorola Inc.

Microwire is a trademark of National Semiconductor Corp.

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 informa-

tion contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty

of any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights

of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of

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part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechan-

ical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for man-

ufacture or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers

appearing in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic,

Inc. trademarks and service marks can be found at http://www.cirrus.com.

2

DS500PP1

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