EVAL-AD7799EBZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

EVAL-AD7799EBZ

3-Channel, Low Noise, Low Power, 16-/24-Bit, Σ-Δ ADC with On-Chip In-Amp

Analog Devices 

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AD7798/AD7799

TABLE OF CONTENTS

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

Interface ............................................................................................. 1

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

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

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

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

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

Timing Characteristics..................................................................... 6

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions............................. 9

Output Noise and Resolution Specifications .............................. 10

AD7798 ........................................................................................ 10

AD7799 ........................................................................................ 11

Typical Performance Characteristics ........................................... 12

On-Chip Registers .......................................................................... 13

Communication Register .......................................................... 13

Status Register ............................................................................. 14

Mode Register ............................................................................. 14

Configuration Register .............................................................. 16

Data Register ............................................................................... 17

ID Register................................................................................... 17

REVISION HISTORY

7/13—Rev. A to Rev. B

Changes to Table 3............................................................................ 8

Changes to Digital Interface Section............................................ 19

Changes to Ordering Guide .......................................................... 27

3/07—Rev. 0 to Rev. A

Updated Format..................................................................Universal

Changes to Specifications ................................................................ 3

Changes to Table 5 and Table 6..................................................... 10

Changes to Table 7 and Table 8..................................................... 11

Changes to Table 14........................................................................ 15

Changes to Ordering Guide .......................................................... 27

1/05—Revision 0: Initial Version

Data Sheet

IO Register................................................................................... 17

Offset Register ............................................................................ 17

Full-Scale Register...................................................................... 17

ADC Circuit Information.............................................................. 18

Overview ..................................................................................... 18

Digital Interface .......................................................................... 19

Circuit Description......................................................................... 22

Analog Input Channel ............................................................... 22

Instrumentation Amplifier........................................................ 22

Bipolar/Unipolar Configuration .............................................. 22

Data Output Coding .................................................................. 23

Burnout Currents ....................................................................... 23

Reference ..................................................................................... 23

Reference Detect......................................................................... 23

Reset ............................................................................................. 23

AVDD Monitor ............................................................................. 24

Calibration................................................................................... 24

Grounding and Layout .............................................................. 25

Applications Information .............................................................. 26

Weigh Scales................................................................................ 26

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 27

Rev. B | Page 2 of 28

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