AD7863 데이터 시트보기 (PDF) - Analog Devices

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AD7863

Simultaneous Sampling Dual 175 kSPS 14-Bit ADC

Analog Devices 

AD7863

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Characteristics ................................................................ 5

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

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

Pin Configuration and Function Descriptions............................. 7

Terminology ...................................................................................... 8

Converter Details.............................................................................. 9

Track-and-Hold Section .............................................................. 9

Reference Section ......................................................................... 9

Circuit Description......................................................................... 10

Analog Input Section ................................................................. 10

Offset and Full-Scale Adjustment ............................................ 10

Timing and Control ................................................................... 11

Operating Modes ............................................................................ 13

Mode 1 Operation ...................................................................... 13

Mode 2 Operation ...................................................................... 13

AD7863 Dynamic Specifications ............................................. 14

Signal-to-Noise Ratio (SNR)..................................................... 14

REVISION HISTORY

11/06—Rev. A to Rev. B

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

Deleted Applications ........................................................................ 1

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

Changes to Absolute Maximum Ratings ....................................... 6

Updated Outline Dimensions ....................................................... 21

Changes to Ordering Guide .......................................................... 22

5/99—Rev. 0 to Rev. A

Effective Number of Bits ........................................................... 14

Total Harmonic Distortion (THD) .......................................... 15

Intermodulation Distortion ...................................................... 15

Peak Harmonic or Spurious Noise........................................... 15

DC Linearity Plot ....................................................................... 15

Power Considerations................................................................ 16

Microprocessor Interfacing........................................................... 17

AD7863 to ADSP-2100 Interface ............................................. 17

AD7863 to ADSP-2101/ADSP-2102 Interface ....................... 17

AD7863 to TMS32010 Interface .............................................. 17

AD7863 to TMS320C25 Interface............................................ 17

AD7863 to MC68000 Interface ................................................ 18

AD7863 to 80C196 Interface .................................................... 18

Vector Motor Control ................................................................ 18

Multiple AD7863s ...................................................................... 19

Applications Hints.......................................................................... 20

PC Board Layout Considerations............................................. 20

Ground Planes ............................................................................ 20

Power Planes ............................................................................... 20

Supply Decoupling ..................................................................... 20

Outline Dimensions ....................................................................... 21

Ordering Guide .......................................................................... 22

Rev. B | Page 2 of 24

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