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AD7997 датащи(PDF) 2 Page - Analog Devices

номер детали AD7997
подробное описание детали  8-Channel, 10- and 12-Bit ADCs with IC Compatible Interface in 20-Lead TSSOP
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7997 датащи(HTML) 2 Page - Analog Devices

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AD7997/AD7998
Rev. 0 | Page 2 of 32
TABLE OF CONTENTS
AD7997 Specifications..................................................................... 3
AD7998 Specifications..................................................................... 5
I2C Timing Specifications ................................................................ 7
Absolute Maximum Ratings............................................................ 9
ESD Caution.................................................................................. 9
Pin Configuration and Pin Function Descriptions.................... 10
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 12
Circuit Information ........................................................................ 15
Converter Operation.................................................................. 15
Typical Connection Diagram ................................................... 16
Analog Input ............................................................................... 16
Internal Register Structure ............................................................ 18
Address Pointer Register ........................................................... 18
Configuration Register .............................................................. 19
Conversion Result Register ....................................................... 20
Limit Registers ............................................................................ 20
Alert Status Register (CH1 to CH4) ........................................ 21
Cycle Timer Register.................................................................. 22
Sample Delay and Bit Trial Delay............................................. 22
Serial Interface ................................................................................ 23
Serial Bus Address ...................................................................... 23
Writing to the AD7997/AD7998 .................................................. 24
Writing to the Address Pointer Register for a Subsequent
Read.............................................................................................. 24
Writing a Single Byte of Data to the Alert Status Register or
Cycle Register.............................................................................. 24
Writing Two Bytes of Data to a Limit, Hysteresis, or
Configuration Register .............................................................. 24
Reading Data from the AD7997/AD7998................................... 26
ALERT/BUSY Pin .......................................................................... 27
SMBus ALERT ............................................................................ 27
BUSY ............................................................................................ 27
Placing the AD7997-1/AD7998-1 into High Speed Mode ... 27
The Address Select (AS) Pin ..................................................... 27
Modes of Operation ....................................................................... 28
Mode 1—Using the CONVST Pin ........................................... 28
Mode 2 – COMMAND MODE ............................................... 29
Mode 3—Automatic Cycle Interval Mode.............................. 30
Outline Dimensions ....................................................................... 31
Ordering Guide .......................................................................... 31
Related Parts in I2C-Compatible ADC Product Family........ 31
REVISION HISTORY
9/04—Revision 0: Initial Version


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