Datasheet

ADAS3022 Data Sheet
Rev. B | Page 2 of 40
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 7
Absolute Maximum Ratings ............................................................ 9
ESD Caution .................................................................................. 9
Pin Configuration and Function Descriptions ........................... 10
Typical Performance Characteristics ........................................... 12
Terminology .................................................................................... 20
Theory of Operation ...................................................................... 22
Overview ...................................................................................... 22
ADAS3022 Operation ................................................................ 22
Transfer Function ....................................................................... 23
Typical Application Connection Diagram .............................. 24
Analog Inputs.............................................................................. 25
Voltage Reference Output/Input .............................................. 28
Power Supply ............................................................................... 29
Conversion Modes ..................................................................... 30
Digital Interface .............................................................................. 31
Conversion Control ................................................................... 31
Reset and Power-Down (PD) Inputs ....................................... 32
Serial Data Interface ................................................................... 32
General Considerations ............................................................. 33
General Timing........................................................................... 34
Configuration Register .............................................................. 36
Channel Sequencer Details ....................................................... 37
Outline Dimensions ....................................................................... 39
Ordering Guide .......................................................................... 39
REVISION HISTORY
4/13—Rev. A to Rev. B
Changes to Table 1 ............................................................................ 1
Added Input Impedance of 500 MΩ Min, Table 2 ....................... 3
1/13—Rev. 0 to Rev. A
Removed Endnote 3 and Added T
A
= 25°C to Gain Error Test
Conditions/Comments, Table 2 ...................................................... 3
Changes to REF1 and REF2 Description..................................... 11
Added Figure 25 to Figure 28; Renumbered Sequentially ........ 15
Changes to Figure 29 ...................................................................... 15
Added Figure 30 .............................................................................. 16
Changes to Figure 33, Figure 34, and Figure 35 ......................... 16
Changes to Figure 36 and Figure 37 ............................................. 17
Changes to Figure 50 ...................................................................... 19
Changes to Figure 54 ...................................................................... 24
Changes to Figure 56 ...................................................................... 25
Changes to Figure 57, Figure 58, Figure 59, and Figure 60 ....... 26
Changes to Voltage Reference Output/Input Section, Figure 62,
and Figure 63 ................................................................................... 28
Changes to Core Supplies Section ................................................ 29
11/12—Revision 0: Initial Version