Datasheet AD7791 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 24-Bit, Single-Channel, Ultra Low Power, Sigma Delta A/D Converter |
| 页数 / 页 | 21 / 3 — AD7791. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 3/13—Rev. 0 to … |
| 修订版 | A |
| 文件格式/大小 | PDF / 532 Kb |
| 文件语言 | 英语 |
AD7791. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 3/13—Rev. 0 to Rev. A. 8/03—Revision 0: Initial Version
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AD7791 Data Sheet TABLE OF CONTENTS
AD7791—Specifications .. 3 Noise Performance ... 14 Timing Characteristics, ... 5 Reduced Current Modes ... 14 Absolute Maximum Ratings .. 7 Digital Interface .. 15 ESD Caution .. 7 Single Conversion Mode ... 16 Pin Configuration and Function Descriptions ... 8 Continuous Conversion Mode ... 16 Typical Performance Characteristics ... 9 Continuous Read Mode .. 17 On-chip Registers ... 10 Circuit Description... 18 Communications Register (RS1, RS0 = 0, 0) .. 10 Analog Input Channel ... 18 Status Register (RS1, RS0 = 0, 0; Bipolar/Unipolar Configuration .. 18 Power-on/Reset = 0x8C) ... 11 Data Output Coding .. 18 Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) .. 11 Reference Input ... 18 Filter Register (RS1, RS0 = 1, 0; VDD Monitor .. 19 Power-on/Reset = 0x04) .. 12 Grounding and Layout .. 19 Data Register (RS1, RS0 = 1, 1; Outline Dimensions ... 20 Power-on/Reset = 0x000000) .. 13 Ordering Guide .. 20 ADC Circuit Information .. 14 Overview .. 14
REVISION HISTORY 3/13—Rev. 0 to Rev. A
Moved ESD Caution Section .. 7 Changes to Figure 13 ... 15 Changes to Reference Input Section ... 18 Updated Outline Dimensions .. 20 Changes to Ordering Guide ... 20
8/03—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline AD7791—Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics On-chip Registers Communications Register (RS1, RS0 = 0, 0) Status Register (RS1, RS0 = 0, 0; Power-on/Reset = 0x8C) Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) Filter Register (RS1, RS0 = 1, 0; Power-on/Reset = 0x04) Data Register (RS1, RS0 = 1, 1; Power-on/Reset = 0x000000) ADC Circuit Information Overview Noise Performance Reduced Current Modes Digital Interface Single Conversion Mode Continuous Conversion Mode Continuous Read Mode Circuit Description Analog Input Channel Bipolar/Unipolar Configuration Data Output Coding Reference Input VDD Monitor Grounding and Layout Outline Dimensions Ordering Guide
AD7791 Data Sheet TABLE OF CONTENTS
AD7791—Specifications .. 3 Noise Performance ... 14 Timing Characteristics, ... 5 Reduced Current Modes ... 14 Absolute Maximum Ratings .. 7 Digital Interface .. 15 ESD Caution .. 7 Single Conversion Mode ... 16 Pin Configuration and Function Descriptions ... 8 Continuous Conversion Mode ... 16 Typical Performance Characteristics ... 9 Continuous Read Mode .. 17 On-chip Registers ... 10 Circuit Description... 18 Communications Register (RS1, RS0 = 0, 0) .. 10 Analog Input Channel ... 18 Status Register (RS1, RS0 = 0, 0; Bipolar/Unipolar Configuration .. 18 Power-on/Reset = 0x8C) ... 11 Data Output Coding .. 18 Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) .. 11 Reference Input ... 18 Filter Register (RS1, RS0 = 1, 0; VDD Monitor .. 19 Power-on/Reset = 0x04) .. 12 Grounding and Layout .. 19 Data Register (RS1, RS0 = 1, 1; Outline Dimensions ... 20 Power-on/Reset = 0x000000) .. 13 Ordering Guide .. 20 ADC Circuit Information .. 14 Overview .. 14
REVISION HISTORY 3/13—Rev. 0 to Rev. A
Moved ESD Caution Section .. 7 Changes to Figure 13 ... 15 Changes to Reference Input Section ... 18 Updated Outline Dimensions .. 20 Changes to Ordering Guide ... 20
8/03—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline AD7791—Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics On-chip Registers Communications Register (RS1, RS0 = 0, 0) Status Register (RS1, RS0 = 0, 0; Power-on/Reset = 0x8C) Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) Filter Register (RS1, RS0 = 1, 0; Power-on/Reset = 0x04) Data Register (RS1, RS0 = 1, 1; Power-on/Reset = 0x000000) ADC Circuit Information Overview Noise Performance Reduced Current Modes Digital Interface Single Conversion Mode Continuous Conversion Mode Continuous Read Mode Circuit Description Analog Input Channel Bipolar/Unipolar Configuration Data Output Coding Reference Input VDD Monitor Grounding and Layout Outline Dimensions Ordering Guide