AD7790 Data Sheet
Rev. A | Page 2 of 20
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
Overvie w ...................................................................................... 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
V
DD
Monitor ................................................................................ 18
Grounding and Layout .............................................................. 18
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 19
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
