AD7982 Analog Devices, AD7982 Datasheet - Page 2

• Manufacturer Part Number: AD7982
• Manufacturer: Analog Devices

Specifications of AD7982

• Resolution (bits): 18bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOP

AD7982
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Application Diagram Example........................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configurations and Function Descriptions ........................... 7
Terminology ...................................................................................... 8
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 12
REVISION HISTORY
10/07—Rev. 0 to Rev. A
Changes to Table 1 and Layout ....................................................... 1
Changes to Table 2............................................................................ 3
Changes to Layout ............................................................................ 5
Changes to Layout ............................................................................ 6
Changes to Figure 5.......................................................................... 7
Changes to Figure 18 and Figure 20............................................. 11
Changes to Figure 23...................................................................... 13
Changers to Figure 26 .................................................................... 15
Changes to Digital Interface Section............................................ 16
Changes to Figure 38...................................................................... 21
Changes to Figure 40...................................................................... 22
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 24
3/07—Revision 0: Initial Version
Timing Specifications .................................................................. 5
ESD Caution.................................................................................. 6
Circuit Information.................................................................... 12
Converter Operation.................................................................. 12
Typical Connection Diagram ................................................... 13
Analog Inputs.............................................................................. 14
Rev. A | Page 2 of 24
Application Hints ........................................................................... 23
Outline Dimensions ....................................................................... 24
Driver Amplifier Choice ........................................................... 14
Single-to-Differential Driver .................................................... 15
Voltage Reference Input ............................................................ 15
Power Supply............................................................................... 15
Digital Interface.......................................................................... 16
CS Mode, 3-Wire Without Busy Indicator ............................. 17
CS Mode, 3-Wire with Busy Indicator .................................... 18
CS Mode, 4-Wire Without Busy Indicator ............................. 19
CS Mode, 4-Wire with Busy Indicator .................................... 20
Chain Mode Without Busy Indicator ...................................... 21
Chain Mode with Busy Indicator............................................. 22
Layout .......................................................................................... 23
Evaluating AD7982 Performance............................................. 23
Ordering Guide .......................................................................... 24