AD7791 Analog Devices, AD7791 Datasheet - Page 2

• Manufacturer Part Number: AD7791
• Description: 24-Bit, Single-Channel, Ultra Low Power, Sigma Delta A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7791

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7791
TABLE OF CONTENTS
AD7791—Specifications.................................................................. 3
Timing Characteristics..................................................................... 5
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
On-Chip Registers .......................................................................... 10
REVISION HISTORY
Revision 0: Initial Version
Communications Register
(RS1, RS0 = 0, 0) ......................................................................... 10
Status Register
(RS1, RS0 = 0, 0; Power-on/Reset = 0x8C).............................. 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 = 0x000000) ...................... 13
Rev. 0 | Page 2 of 20
ADC Circuit Information.............................................................. 14
Circuit Description......................................................................... 18
Outline Dimensions ....................................................................... 20
Overview ..................................................................................... 14
Noise Performance ..................................................................... 14
Reduced Current Modes ........................................................... 14
Digital Interface .......................................................................... 15
Analog Input Channel ............................................................... 18
Bipolar/Unipolar Configuration .............................................. 18
Data Output Coding .................................................................. 18
Reference Input........................................................................... 18
V
Grounding and Layout .............................................................. 19
DD
Single Conversion Mode ....................................................... 16
Continuous Conversion Mode............................................. 16
Continuous Read Mode ........................................................ 17
Monitor ................................................................................ 19