Datasheet

AD7193 Data Sheet
Rev. D | Page 2 of 56
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
Timing Characteristics ................................................................ 8
Absolute Maximum Ratings .......................................................... 10
Thermal Resistance .................................................................... 10
ESD Caution ................................................................................ 10
Pin Configurations and Function Descriptions ......................... 11
Typical Performance Characteristics ........................................... 15
RMS Noise and Resolution............................................................ 18
Sinc
4
Chop Disabled ................................................................... 18
Sinc
3
Chop Disabled ................................................................... 19
Fast Settling ................................................................................. 20
On-Chip Registers .......................................................................... 21
Communications Register ......................................................... 22
Status Register ............................................................................. 23
Mode Register ............................................................................. 24
Configuration Register .............................................................. 27
Data Register ............................................................................... 29
ID Register ................................................................................... 29
GPOCON Register ..................................................................... 29
Offset Register ............................................................................. 30
Full-Scale Register ...................................................................... 30
ADC Circuit Information .............................................................. 31
Overview ...................................................................................... 31
Analog Input Channel ............................................................... 32
Programmable Gain Array (PGA) ........................................... 32
Reference ..................................................................................... 32
Reference Detect ......................................................................... 33
Bipolar/Unipolar Configuration .............................................. 33
Data Output Coding .................................................................. 33
Burnout Currents ....................................................................... 33
Channel Sequencer .................................................................... 33
Digital Interface .......................................................................... 34
Reset ............................................................................................. 38
System Synchronization ............................................................ 38
Enable Parity ............................................................................... 38
Clock ............................................................................................ 38
Bridge Power-Down Switch ...................................................... 38
Temperature Sensor ................................................................... 39
Logic Outputs ............................................................................. 39
Calibration................................................................................... 39
Digital Filter .................................................................................... 41
Sinc
4
Filter (Chop Disabled) ..................................................... 41
Sinc
3
Filter (Chop Disabled) ..................................................... 43
Chop Enabled (Sinc
4
Filter) ...................................................... 45
Chop Enabled (Sinc
3
Filter) ...................................................... 47
Fast Settling Mode (Sinc
4
Filter) ............................................... 48
Fast Settling Mode (Sinc
3
Filter) ............................................... 50
Fast Settling Mode (Chop Enabled) ......................................... 51
Summary of Filter Options ....................................................... 52
Grounding and Layout .................................................................. 53
Applications Information .............................................................. 54
Flowmeter .................................................................................... 54
Outline Dimensions ....................................................................... 55
Ordering Guide .......................................................................... 55