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AD7985 датащи(PDF) 3 Page - Analog Devices

номер детали AD7985
подробное описание детали  16-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD7985 датащи(HTML) 3 Page - Analog Devices

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AD7985
Data Sheet
Rev. C | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
 
Applications....................................................................................... 1
 
Application Diagram........................................................................ 1
 
General Description ......................................................................... 1
 
Revision History ............................................................................... 2
 
Specifications..................................................................................... 3
 
Timing Specifications .................................................................. 5
 
Absolute Maximum Ratings............................................................ 6
 
ESD Caution.................................................................................. 6
 
Pin Configuration and Function Descriptions............................. 7
 
Typical Performance Characteristics ............................................. 9
 
Terminology .................................................................................... 12
 
Theory of Operation ...................................................................... 13
 
Circuit Information.................................................................... 13
 
Converter Operation.................................................................. 13
 
Conversion Modes of Operation.............................................. 13
 
Typical Connection Diagram ................................................... 14
 
Analog Inputs ............................................................................. 15
 
Driver Amplifier Choice ........................................................... 15
 
Voltage Reference Input ............................................................ 16
 
Power Supply............................................................................... 16
 
Digital Interface .............................................................................. 17
 
Data Reading Options ............................................................... 18
 
CS Mode, 3-Wire Without Busy Indicator ............................. 19
 
CS Mode, 3-Wire with Busy Indicator .................................... 20
 
CS Mode, 4-Wire Without Busy Indicator ............................. 21
 
CS Mode, 4-Wire with Busy Indicator .................................... 22
 
Chain Mode Without Busy Indicator ...................................... 23
 
Chain Mode with Busy Indicator ............................................. 24
 
Applications Information .............................................................. 25
 
Layout .......................................................................................... 25
 
Evaluating the AD7985 Performance ...................................... 25
 
Outline Dimensions ....................................................................... 27
 
Ordering Guide .......................................................................... 27
 
REVISION HISTORY
3/16—Rev. B to Rev. C
Changes to Table 1............................................................................ 1
Change to Endnote 3, Table 1 ......................................................... 3
Change to Signal-to-Noise-and-Distortion Ratio Parameter,
Table 2 ................................................................................................ 3
Deleted Endnote 4, Table 2.............................................................. 3
Changes to Figure 4.......................................................................... 7
Changes to Figure 23...................................................................... 14
Changes to Driver Amplifier Choice Section ............................. 15
Change to Reference Decoupling Section ................................... 16
Changes to Reading During Conversion, Fast Host (Turbo or
Normal Mode) Section and Split-Reading, Any Speed Host
(Turbo or Normal Mode) Section ................................................ 18
Changes to Figure 31...................................................................... 21
Updated Outline Dimensions ....................................................... 27
Changes to Ordering Guide .......................................................... 27
7/14—Rev. A to Rev. B
Added Patent Endnote......................................................................1
Changes to Figure 21...................................................................... 13
Changes to Data Reading Options Section................................. 18
Updated Outline Dimensions....................................................... 27
8/10—Rev. 0 to Rev. A
Change to Table 4, Conversion Time: CNV Rising Edge
to Data Available................................................................................5
9/09—Revision 0: Initial Version


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