AD7790

Rev. 0 | Page 2 of 20

TABLE OF CONTENTS

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

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

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

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

REVISION HISTORY

Revision 0: Initial Version