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AD7790 Datasheet(PDF) 2 Page - Analog Devices

Part No. AD7790
Description  Low Power, 16-Bit Buffered Sigma-Delta ADC
Download  20 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7790 Datasheet(HTML) 2 Page - Analog Devices

 
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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
 
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
 
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


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