AD7190BRUZ-REEL Analog Devices Inc, AD7190BRUZ-REEL Datasheet - Page 2

• Manufacturer Part Number: AD7190BRUZ-REEL
• Description: 2ch UltraLow Noise 24Bit SD ADC IC.
• Manufacturer: Analog Devices Inc

Specifications of AD7190BRUZ-REEL

• Design Resources: Precision Weigh Scale Design Using AD7190 with Internal PGA (CN0102)
• Number Of Bits: 24
• Sampling Rate (per Second): 4.8k
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7190
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 9
Pin Configuration and Function Descriptions ........................... 10
Typical Performance Characteristics ........................................... 12
RMS Noise and Resolution ............................................................ 15
On-Chip Registers .......................................................................... 19
REVISION HISTORY
5/09—Rev. A to Rev. B
Changes to Table 3 ............................................................................ 9
5/09—Rev. 0 to Rev. A
Changes to Table 1 ............................................................................ 3
Changes to Table 3 and Table 4 ....................................................... 9
Changes to Table 5 .......................................................................... 10
Changes to Table 6 and Table 7 ..................................................... 15
Changes to Status Register Section .............................................. 20
Changes to Table 17 ........................................................................ 21
Changes to Table 19 ........................................................................ 23
Changes to Table 20 ........................................................................ 24
Added ID Register Section ............................................................ 24
Timing Characteristics ................................................................ 7
Circuit and Timing Diagrams ..................................................... 7
Thermal Resistance ...................................................................... 9
ESD Caution .................................................................................. 9
Sinc
Sinc
Sinc
Sinc
Communications Register ......................................................... 19
Status Register ............................................................................. 20
Mode Register ............................................................................. 20
Configuration Register .............................................................. 22
Data Register ............................................................................... 24
ID Register ................................................................................... 24
GPOCON Register ..................................................................... 24
Offset Register ............................................................................. 25
4
3
4
3
Chop Disabled ................................................................... 15
Chop Disabled ................................................................... 16
Chop Enabled .................................................................... 17
Chop Enabled .................................................................... 18
Rev. B | Page 2 of 40
ADC Circuit Information .............................................................. 26
Circuit Description......................................................................... 33
Applications Information .............................................................. 38
Outline Dimensions ....................................................................... 39
Changes to Table 21 ....................................................................... 25
Changes to Filter, Output Data Rate, Settling Time Section .... 26
Changes to Continuous Conversion Mode Section ................... 31
Changes to Analog Input Channel and Bipolar/Unipolar
Configuration Sections .................................................................. 33
Changes to Burnout Currents, Reference, Reference Detect, and
Reset Sections .................................................................................. 34
Changes to Temperature Sensor Section ..................................... 35
Changes to Calibration Section .................................................... 36
Changes to Grounding and Layout Section ................................ 37
Changes to Weigh Scales Section ................................................. 38
Changes to Ordering Guide .......................................................... 39
10/08—Revision 0—Initial Version
Full-Scale Register ...................................................................... 25
Overview ..................................................................................... 26
Filter, Output Data Rate, Settling Time ................................... 26
Digital Interface .......................................................................... 29
Analog Input Channel ............................................................... 33
PGA .............................................................................................. 33
Bipolar/Unipolar Configuration .............................................. 33
Data Output Coding .................................................................. 33
Clock ............................................................................................ 33
Burnout Currents ....................................................................... 34
Reference ..................................................................................... 34
Reference Detect ......................................................................... 34
Reset ............................................................................................. 34
System Synchronization ............................................................ 35
Temperature Sensor ................................................................... 35
Bridge Power-Down Switch ...................................................... 35
Logic Outputs ............................................................................. 35
Enable Parity ............................................................................... 36
Calibration ................................................................................... 36
Grounding and Layout .............................................................. 37
Weigh Scales ................................................................................ 38
Ordering Guide .......................................................................... 39