AD7790BRM Ver la hoja de datos (PDF) - Analog Devices

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AD7790BRM

Low Power, 16-Bit Buffered Sigma-Delta ADC

Analog Devices 

AD7790

TABLE OF CONTENTS

AD7790—Specifications.................................................................. 3

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

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

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

On-Chip Registers .......................................................................... 10

Communications Register (RS1, RS0 = 0, 0) .......................... 10

Status Register (RS1, RS0 = 0, 0; Power-on/Reset = 0x88) ... 11

Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02).... 11

Filter Register (RS1, RS0 = 1, 0; Power-on/Reset = 0x04)..... 12

Data Register (RS1, RS0 = 1, 1; Power-on/Reset = 0x0000) . 12

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

Overview...................................................................................... 13

Noise Performance ..................................................................... 13

REVISION HISTORY

3/13—Rev. 0 to Rev. A

Added ESD Caution Section ............................................................7

Changes to Figure 10.......................................................................15

Change to Reference Input Section...............................................17

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

Changes to Ordering Guide ...........................................................19

8/03—Revision 0: Initial Version

Data Sheet

Reduced Current Modes ........................................................... 13

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

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

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

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

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

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

Programmable Gain Amplifier................................................. 17

Bipolar Configuration................................................................ 17

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

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

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

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

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

Ordering Guide .......................................................................... 19

Rev. A | Page 2 of 20

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