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AD7949 Datasheet(PDF) 2 Page - Analog Devices |
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AD7949 Datasheet(HTML) 2 Page - Analog Devices |
2 / 28 page AD7699 Rev. 0 | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block 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 ............................................. 8 Terminology .................................................................................... 12 Theory of Operation ...................................................................... 13 Overview...................................................................................... 13 Converter Operation.................................................................. 13 Transfer Functions...................................................................... 14 Typical Connection Diagrams.................................................. 15 Analog Inputs.............................................................................. 16 Driver Amplifier Choice............................................................ 18 Voltage Reference Output/Input .............................................. 18 Power Supply............................................................................... 19 Supplying the ADC from the Reference.................................. 19 Digital Interface .............................................................................. 20 Reading/Writing During Conversion, Fast Hosts.................. 20 Reading/Writing During Acquisition, Any Speed Hosts...... 20 Reading/Writing Spanning Conversion, Any Speed Host.... 20 Configuration Register, CFG .................................................... 20 General Timing Without a Busy Indicator ............................. 22 Read/Write Spanning Conversion Without a Busy Indicator ...................................................................................... 23 General Timing With a Busy Indicator ................................... 24 Read/Write Spanning Conversion with a Busy Indicator..... 25 Application Hints ........................................................................... 26 Layout .......................................................................................... 26 Evaluating AD7699 Performance............................................. 26 Outline Dimensions ....................................................................... 27 Ordering Guide .......................................................................... 27 REVISION HISTORY 10/08—Revision 0: Initial Version |
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