AD7796 Analog Devices, AD7796 Datasheet - Page 2

• Manufacturer Part Number: AD7796
• Description: Low Power 16-Bit Sigma-Delta A/D Converter for Bridge Sensors
• Manufacturer: Analog Devices

Specifications of AD7796

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: ± (Vref/128)
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7796/AD7797
TABLE OF CONTENTS
Features .............................................................................................. 1
Interface ............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Characteristics..................................................................... 5
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
RMS Noise and Resolution Specifications .................................... 9
Typical Performance Characteristics ........................................... 10
On-Chip Registers .......................................................................... 11
REVISION HISTORY
8/06—Rev. 0 to Rev. A.
Changes to Table 1............................................................................ 3
Changes to Figure 5.......................................................................... 8
Changes to Table 14........................................................................ 13
Timing Diagrams.......................................................................... 6
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Communication Register .......................................................... 11
Status Register ............................................................................. 12
Mode Register ............................................................................. 12
Configuration Register .............................................................. 14
Data Register ............................................................................... 14
Rev. A | Page 2 of 24
ADC Circuit Information.............................................................. 16
Circuit Description......................................................................... 20
Applications..................................................................................... 23
Outline Dimensions ....................................................................... 24
7/06—Revision 0: Initial Version
ID Register................................................................................... 14
Offset Register ............................................................................ 15
Full-Scale Register...................................................................... 15
Overview ..................................................................................... 16
Digital Interface.......................................................................... 17
Analog Input Channel ............................................................... 20
Bipolar/Unipolar Configuration .............................................. 20
Data Output Coding .................................................................. 20
Reference ..................................................................................... 20
Reset ............................................................................................. 21
Burnout Currents ....................................................................... 21
AV
Temperature Monitor ................................................................ 21
Calibration................................................................................... 21
Grounding and Layout .............................................................. 22
Weigh Scales................................................................................ 23
Ordering Guide .......................................................................... 24
DD
Monitor ............................................................................. 21