AD7450ABRM-REEL7 查看數據表（PDF） - Analog Devices

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AD7450ABRM-REEL7

Differential Input, 1 MSPS 10-Bit and 12-Bit ADCs in an 8-Lead SOT-23

Analog Devices 

AD7440/AD7450A

TABLE OF CONTENTS

AD7440–Specifications.................................................................... 3

AD7450A–Specifications................................................................. 5

Timing Specifications....................................................................... 7

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

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

Pin Configurations and Function Descriptions ........................... 9

Terminology .................................................................................... 10

AD7440/AD7450A–Typical Performance Characteristics ....... 12

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

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

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

Typical Connection Diagram ................................................... 16

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

Driving Differential Inputs ....................................................... 18

Digital Inputs .............................................................................. 19

Reference ..................................................................................... 19

Single-Ended Operation............................................................ 20

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

Modes of Operation ....................................................................... 23

Normal Mode.............................................................................. 23

Power-Down Mode .................................................................... 23

Power-Up Time .......................................................................... 24

Power vs. Throughput Rate....................................................... 24

Microprocessor and DSP Interfacing ...................................... 25

Grounding and Layout Hints.................................................... 26

Evaluating the AD7440/AD7450A Performance................... 26

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

Ordering Guide............................................................................... 28

REVISION HISTORY

9/05—Rev. B to Rev. C

Changes to Ordering Guide ............................................................ 28

2/04—Data Sheet changed from Rev. A to Rev. B

Added Patent Note .............................................................................. 1

1/04—Data Sheet changed from Rev. 0 to Rev. A

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

Changes to General Description ....................................................... 1

Changes to Table 1 footnotes ............................................................. 3

Changes to Table 2 footnotes ............................................................. 5

Changes to Table 3 footnotes ............................................................. 7

Rev. C | Page 2 of 28

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