Datasheet AD7715 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | 3 V/5 V, 450 µA, 16-Bit, Sigma-Delta ADC |
| Páginas / Página | 41 / 3 — AD7715. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/15—Rev. D to … |
| Revisión | E |
| Formato / tamaño de archivo | PDF / 913 Kb |
| Idioma del documento | Inglés |
AD7715. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/15—Rev. D to Rev. E. 12/09—Rev. C to Rev. D. 2/00—Rev. B to Rev. C
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AD7715 Data Sheet TABLE OF CONTENTS
Features .. 1 Digital Filtering... 21 Functional Block Diagram .. 1 Analog Filtering .. 23 General Description ... 1 Calibration ... 23 Product Highlights ... 1 Using the AD7715 .. 26 Revision History ... 2 Clocking and Oscillator Circuit ... 26 Specifications ... 3 System Synchronization .. 26 AD7715-5 .. 3 Reset Input .. 27 AD7715-3 .. 5 Standby Mode ... 27 Timing Characteristics .. 8 Accuracy .. 27 Absolute Maximum Ratings .. 9 Drift Considerations .. 27 ESD Caution .. 9 Power Supplies .. 28 Pin Configuration And Function Descriptions .. 10 Digital Interface .. 29 Terminology .. 11 Configuring the AD7715 ... 31 On-Chip Registers .. 12 Microcontroller/Microprocessor Interfacing ... 32 Communications Register (RS1, RS0 = 0, 0) .. 13 AD7715 to 68HC11 Interface ... 32 Setup Register (RS1, RS0 = 0, 1); Power On/Reset Status: AD7715 to 8XC51 Interface .. 33 28 Hex .. 14 AD7715 to ADSP-2184N/ADSP-2185N/ADSP-2186N/ Test Register (RS1, RS0 = 1, 0) .. 15 ADSP-2187N/ADSP-2188N/ADSP-2189N Interface.. 33 Data Register (RS1, RS0 = 1, 1) .. 15 Code For Setting Up The AD7715 ... 34 Output Noise ... 16 C Code for Interfacing AD7715 to 68HC11 ... 34 AD7715-5 .. 16 Applications Information .. 36 AD7715-3 .. 17 Pressure Measurement ... 36 Calibration Sequences .. 18 Temperature Measurement ... 37 Circuit Description ... 19 Smart Transmitters ... 38 Analog Input ... 19 Outline Dimensions ... 39 Reference Input ... 21 Ordering Guide .. 40
REVISION HISTORY 6/15—Rev. D to Rev. E
Changes to Table 10 .. 13 Changed ADSP-2103/ADSP-2105 to ADSP-2184N/ADSP-2185N/ ADSP-2186N/ADSP-2187N/ADSP-2188N/ADSP-2189N ... 33 Updated Outline Dimensions ... 39 Changes to Ordering Guide .. 40
12/09—Rev. C to Rev. D
Updated Format .. Universal Changes to Table 5 .. 9 Updated Outline Dimensions ... 39
2/00—Rev. B to Rev. C
Rev. E | Page 2 of 40 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7715-5 AD7715-3 TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY ON-CHIP REGISTERS COMMUNICATIONS REGISTER (RS1, RS0 = 0, 0) SETUP REGISTER (RS1, RS0 = 0, 1); POWER ON/RESET STATUS: 28 HEX TEST REGISTER (RS1, RS0 = 1, 0) DATA REGISTER (RS1, RS0 = 1, 1) OUTPUT NOISE AD7715-5 AD7715-3 CALIBRATION SEQUENCES CIRCUIT DESCRIPTION ANALOG INPUT Analog Input Ranges Input Sample Rate Bipolar/Unipolar Inputs REFERENCE INPUT DIGITAL FILTERING Filter Characteristics Post-Filtering ANALOG FILTERING CALIBRATION Self-Calibration System Calibration Span and Offset Limits Power-Up and Calibration USING THE AD7715 CLOCKING AND OSCILLATOR CIRCUIT SYSTEM SYNCHRONIZATION RESET INPUT STANDBY MODE ACCURACY DRIFT CONSIDERATIONS POWER SUPPLIES Supply Current Grounding and Layout Evaluating the AD7715 Performance DIGITAL INTERFACE CONFIGURING THE AD7715 MICROCONTROLLER/MICROPROCESSOR INTERFACING AD7715 TO 68HC11 INTERFACE AD7715 TO 8XC51 INTERFACE AD7715 TO ADSP-2184N/ADSP-2185N/ ADSP-2186N/ADSP-2187N/ADSP-2188N/ ADSP-2189N INTERFACE CODE FOR SETTING UP THE AD7715 C CODE FOR INTERFACING AD7715 TO 68HC11 APPLICATIONS INFORMATION PRESSURE MEASUREMENT TEMPERATURE MEASUREMENT SMART TRANSMITTERS OUTLINE DIMENSIONS ORDERING GUIDE
AD7715 Data Sheet TABLE OF CONTENTS
Features .. 1 Digital Filtering... 21 Functional Block Diagram .. 1 Analog Filtering .. 23 General Description ... 1 Calibration ... 23 Product Highlights ... 1 Using the AD7715 .. 26 Revision History ... 2 Clocking and Oscillator Circuit ... 26 Specifications ... 3 System Synchronization .. 26 AD7715-5 .. 3 Reset Input .. 27 AD7715-3 .. 5 Standby Mode ... 27 Timing Characteristics .. 8 Accuracy .. 27 Absolute Maximum Ratings .. 9 Drift Considerations .. 27 ESD Caution .. 9 Power Supplies .. 28 Pin Configuration And Function Descriptions .. 10 Digital Interface .. 29 Terminology .. 11 Configuring the AD7715 ... 31 On-Chip Registers .. 12 Microcontroller/Microprocessor Interfacing ... 32 Communications Register (RS1, RS0 = 0, 0) .. 13 AD7715 to 68HC11 Interface ... 32 Setup Register (RS1, RS0 = 0, 1); Power On/Reset Status: AD7715 to 8XC51 Interface .. 33 28 Hex .. 14 AD7715 to ADSP-2184N/ADSP-2185N/ADSP-2186N/ Test Register (RS1, RS0 = 1, 0) .. 15 ADSP-2187N/ADSP-2188N/ADSP-2189N Interface.. 33 Data Register (RS1, RS0 = 1, 1) .. 15 Code For Setting Up The AD7715 ... 34 Output Noise ... 16 C Code for Interfacing AD7715 to 68HC11 ... 34 AD7715-5 .. 16 Applications Information .. 36 AD7715-3 .. 17 Pressure Measurement ... 36 Calibration Sequences .. 18 Temperature Measurement ... 37 Circuit Description ... 19 Smart Transmitters ... 38 Analog Input ... 19 Outline Dimensions ... 39 Reference Input ... 21 Ordering Guide .. 40
REVISION HISTORY 6/15—Rev. D to Rev. E
Changes to Table 10 .. 13 Changed ADSP-2103/ADSP-2105 to ADSP-2184N/ADSP-2185N/ ADSP-2186N/ADSP-2187N/ADSP-2188N/ADSP-2189N ... 33 Updated Outline Dimensions ... 39 Changes to Ordering Guide .. 40
12/09—Rev. C to Rev. D
Updated Format .. Universal Changes to Table 5 .. 9 Updated Outline Dimensions ... 39
2/00—Rev. B to Rev. C
Rev. E | Page 2 of 40 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7715-5 AD7715-3 TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY ON-CHIP REGISTERS COMMUNICATIONS REGISTER (RS1, RS0 = 0, 0) SETUP REGISTER (RS1, RS0 = 0, 1); POWER ON/RESET STATUS: 28 HEX TEST REGISTER (RS1, RS0 = 1, 0) DATA REGISTER (RS1, RS0 = 1, 1) OUTPUT NOISE AD7715-5 AD7715-3 CALIBRATION SEQUENCES CIRCUIT DESCRIPTION ANALOG INPUT Analog Input Ranges Input Sample Rate Bipolar/Unipolar Inputs REFERENCE INPUT DIGITAL FILTERING Filter Characteristics Post-Filtering ANALOG FILTERING CALIBRATION Self-Calibration System Calibration Span and Offset Limits Power-Up and Calibration USING THE AD7715 CLOCKING AND OSCILLATOR CIRCUIT SYSTEM SYNCHRONIZATION RESET INPUT STANDBY MODE ACCURACY DRIFT CONSIDERATIONS POWER SUPPLIES Supply Current Grounding and Layout Evaluating the AD7715 Performance DIGITAL INTERFACE CONFIGURING THE AD7715 MICROCONTROLLER/MICROPROCESSOR INTERFACING AD7715 TO 68HC11 INTERFACE AD7715 TO 8XC51 INTERFACE AD7715 TO ADSP-2184N/ADSP-2185N/ ADSP-2186N/ADSP-2187N/ADSP-2188N/ ADSP-2189N INTERFACE CODE FOR SETTING UP THE AD7715 C CODE FOR INTERFACING AD7715 TO 68HC11 APPLICATIONS INFORMATION PRESSURE MEASUREMENT TEMPERATURE MEASUREMENT SMART TRANSMITTERS OUTLINE DIMENSIONS ORDERING GUIDE