AD7091R-5BCPZ-RL7(Rev0) Ver la hoja de datos (PDF) - Analog Devices

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AD7091R-5BCPZ-RL7
(Rev.:Rev0)

4-Channel, I2C, Ultralow Power, 12-Bit ADC in 20-Lead LFCSP/TSSOP

Analog Devices 

AD7091R-5

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

I2C Timing Specifications............................................................ 5

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Pin Configurations and Function Descriptions ........................... 7

Typical Performance Characteristics ............................................. 9

Terminology .................................................................................... 14

Theory of Operation ...................................................................... 15

Circuit Information.................................................................... 15

Converter Operation.................................................................. 15

ADC Transfer Function............................................................. 15

Reference ..................................................................................... 15

Power Supply............................................................................... 16

Device Reset ................................................................................ 16

Analog Input ............................................................................... 16

Driver Amplifier Choice............................................................ 17

Typical Connection Diagram.................................................... 17

I2C Registers .................................................................................... 19

Addressing Registers .................................................................. 19

Slave Address............................................................................... 19

REVISION HISTORY

7/15—Revision 0: Initial Version

Data Sheet

I2C Register Access ..................................................................... 19

Conversion Result Register ....................................................... 20

Channel Register ........................................................................ 21

Configuration Register .............................................................. 22

Alert Indication Register ........................................................... 24

Channel x Low Limit Register .................................................. 26

Channel x High Limit Register................................................. 26

Channel x Hysteresis Register .................................................. 26

I2C Interface .................................................................................... 27

Serial Bus Address Byte ............................................................. 27

General I2C Timing.................................................................... 27

Writing to the AD7091R-5 ............................................................ 28

Writing Two Bytes of Data to a 16-Bit Register ..................... 28

Writing to Multiple Registers.................................................... 28

Reading Data from the AD7091R-5............................................. 29

Reading Two Bytes of Data from a 16-Bit Register ............... 29

Modes of Operation ....................................................................... 30

Sample Mode............................................................................... 30

Command Mode ........................................................................ 30

Autocycle Mode.......................................................................... 32

Power-Down Mode .................................................................... 32

Alert ............................................................................................. 33

Busy .............................................................................................. 33

Channel Sequencer .................................................................... 33

Outline Dimensions ....................................................................... 34

Ordering Guide .......................................................................... 34

Rev. 0 | Page 2 of 34

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