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AD7793 Datasheet(PDF) 2 Page - Analog Devices |
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AD7793 Datasheet(HTML) 2 Page - Analog Devices |
2 / 18 page AD7792/AD7793 Preliminary Technical Data REV.PrF 6/04 | Page 2 TABLE OF CONTENTS AD7792/AD7793—Specifications.................................................. 3 Timing Characteristics, .................................................................... 6 Absolute Maximum Ratings............................................................ 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 11 On-chip Registers ........................................................................... 12 Communications Register (RS2, RS1, RS0 = 0, 0, 0) .............. 12 Status Register (RS2, RS1, RS0 = 0, 0, 0; Power-on/Reset = 0x80 (AD7792) / 0x88 (AD7793)) ........................................... 13 Mode Register (RS2, RS1, RS0 = 0, 0, 1; Power-on/Reset = 0x000A)........................................................................................ 13 Configuration Register (rs2, RS1, RS0 = 0, 1, 0; Power- on/Reset = 0x0710) .................................................................... 15 Data Register (RS2, RS1, RS0 = 0, 1, 1; Power-on/Reset = 0x0000(00)) ................................................................................. 16 ID Register (RS2, RS1, RS0 = 1, 0, 0; Power-on/Reset = 0xXA (ad7792) / 0xXB (ad7793))........................................................ 16 IO Register (RS2, RS1, RS0 = 1, 0, 1; Power-on/Reset = 0x00) ....................................................................................................... 16 OFFSET Register (RS2, RS1, RS0 = 1, 1, 0; Power-on/Reset = 0x8000(AD7792)/ 0x800000(AD7793)).................................. 17 FULL-SCALE Register (RS2, RS1, RS0 = 1, 1, 1; Power- on/Reset = 0x5xx5(AD7792)/ 0x5xXXx5(AD7793)) ............ 17 ADC Circuit Information.............................................................. 19 Overview ..................................................................................... 19 Noise Performance ..................................................................... 19 Digital Interface .......................................................................... 20 Single Conversion Mode ....................................................... 21 Continuous Conversion Mode............................................. 21 Continuous Read Mode ........................................................ 22 Circuit Description......................................................................... 23 Analog Input Channel ............................................................... 23 Bipolar/Unipolar Configuration .............................................. 23 Data Output Coding .................................................................. 23 Reference ..................................................................................... 23 VDD Monitor ................................................................................ 24 Grounding and Layout .............................................................. 24 Outline Dimensions ....................................................................... 26 ESD Caution................................................................................ 26 REVISION HISTORY REV.PrF, June 2004: Initial Version |
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