AD7788 Ver la hoja de datos (PDF) - Analog Devices

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AD7788

Low Power, 16-/24-Bit Sigma-Delta ADC

Analog Devices 

AD7788/AD7789

TABLE OF CONTENTS

AD7789—Specifications.................................................................. 3

AD7788—Specifications.................................................................. 4

AD7788/AD7789 Specifications..................................................... 5

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

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

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

Typical Performance Characteristics ........................................... 10

On-Chip Registers .......................................................................... 11

Communications Register

(RS1, RS0 = 0, 0) ......................................................................... 11

Status Register

(RS1, RS0 = 0, 0; Power-on/Reset = 0x88 [AD7788]

and 0x8C [AD7789]).................................................................. 12

Mode Register

(RS1, RS0 = 0, 1; Power-on/Reset = 0x02)............................... 12

Data Register

(RS1, RS0 = 1, 1; Power-on/Reset = 0x0000 [AD7788]

and 0x000000 [AD7789]) .......................................................... 13

REVISION HISTORY

Revision 0: Initial Version

ADC Circuit Information.............................................................. 14

Overview ..................................................................................... 14

Noise Performance ..................................................................... 14

Digital Interface .......................................................................... 14

Single Conversion Mode ....................................................... 15

Continuous Conversion Mode............................................. 15

Continuous Read Mode ........................................................ 16

Circuit Description......................................................................... 17

Analog Input Channel ............................................................... 17

Bipolar/Unipolar Configuration .............................................. 17

Data Output Coding .................................................................. 17

Reference Input........................................................................... 17

VDD Monitor ................................................................................ 18

Grounding and Layout .............................................................. 18

Outline Dimensions ....................................................................... 19

Rev. 0 | Page 2 of 20

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