AD7608 Analog Devices, AD7608 Datasheet - Page 2

• Manufacturer Part Number: AD7608
• Description: 8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
• Manufacturer: Analog Devices

Specifications of AD7608

• Resolution (bits): 18bit
• # Chan: 8
• Sample Rate: 200kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Bip
• Ain Range: Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

AD7608
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Companion Products ....................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
General Description ......................................................................... 3
Specifications ..................................................................................... 4
Absolute Maximum Ratings .......................................................... 10
Pin Configuration and Function Descriptions ........................... 11
Typical Performance Characteristics ........................................... 14
Terminology .................................................................................... 18
Theory of Operation ...................................................................... 19
REVISION HISTORY
1/12—Rev. 0 to Rev. A
Changes to Analog Input Ranges Section ···································· 19
4/11—Revision 0: Initial Version
Timing Specifications .................................................................. 6
Thermal Resistance .................................................................... 10
ESD Caution ................................................................................ 10
Rev. A | Page 2 of 32
Digital Interface .............................................................................. 24
Outline Dimensions ....................................................................... 32
Converter Details ....................................................................... 19
Analog Input ............................................................................... 19
ADC Transfer Function ............................................................. 20
Internal/External Reference ...................................................... 21
Typical Connection Diagram ................................................... 22
Power-Down Modes .................................................................. 22
Conversion Control ................................................................... 23
Parallel Interface ( PAR /SER SEL = 0) ...................................... 24
Serial Interface ( PAR /SER SEL = 1) ......................................... 25
Reading During Conversion ..................................................... 25
Digital Filter ................................................................................ 26
Layout Guidelines....................................................................... 30
Ordering Guide .......................................................................... 32
Data Sheet