AD7298 View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD7298

8-Channel, 1 MSPS, 12-Bit SAR ADC with Temperature Sensor

Analog Devices 

AD7298

TABLE OF CONTENTS

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

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

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

Product Highlights ........................................................................... 1

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

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

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

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

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

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

Pin Configuration and Function Description .............................. 7

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

Terminology .................................................................................... 12

Circuit Information ........................................................................ 13

Converter Operation.................................................................. 13

Analog Input ............................................................................... 13

Temperature Sensor Operation ................................................ 14

REVISION HISTORY

6/11—Rev. A to Rev. B

Changes to Internal Temperature Sensor, Accuracy Parameter

in Table 1............................................................................................ 3

1/11—Rev. 0 to Rev. A

Removed Input Impedance Parameter .......................................... 3

Added Input Capacitance Parameter of 8 pF................................ 3

Changes to Figure 11...................................................................... 10

Changed C1 Value to 8 pF in Analog Input Section.................. 13

Changes to Figure 23...................................................................... 14

Changes to Ordering Guide .......................................................... 24

9/10—Revision 0: Initial Version

Temperature Sensor Averaging ................................................ 14

VDRIVE............................................................................................ 15

The Internal or External Reference.......................................... 15

Control Register.............................................................................. 16

Modes of Operation ....................................................................... 17

Traditional Multichannel Mode of Operation........................ 17

Repeat Operation ....................................................................... 18

Power-Down Modes .................................................................. 19

Powering Up the AD7298 ......................................................... 20

Reset ............................................................................................. 20

Serial Interface ................................................................................ 21

Temperature Sensor Read ......................................................... 22

Layout and Configuration............................................................. 23

Power Supply Bypassing and Grounding................................ 23

Temperature Monitoring........................................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

Rev. B | Page 2 of 24

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