Datasheet AD7707 (Analog Devices) - 4

AD7707 REVISION HISTORY 1/10—Rev. A to Rev B
Deleted Evaluating the AD7707 Performance Section .. 27 Updated Format .. Universal Changes to Digital Filtering Section and Changes to Features Section .. 1 Filter Characteristics Section ... 28 Changes to Table 1 .. 4 Deleted AD7707 to ADSP-2103/ADSP-2105 Interface Changes to Table 5 .. 9 Section .. 31 Changes to Output Noise For Low Level Input Channels Deleted Figure 23; Renumbered Sequentially ... 31 (3 V Operation) Section ... 14 Moved Figure 18 .. 33 Changes to Output Noise For High Level Input Channel AIN3 Changes to Figure 19 and Supply Current Section ... 35 (5 V Operation) Section ... 15 Change to Smart Valve/Actuator Control Section and Changed Output Noise For High Level Input Channel AIN3 Figure 25 ... 43 (5 V Operation) Section Heading to Output Noise For High Changes to Figure 27 .. 44 Level Input Channel AIN3 (3 V Operation) ... 17 Added Titles to Table 28, Table 29, and Table 30 .. 46 Changes to Table 16 .. 19 Updated Outline Dimensions .. 49 Changes to Zero-Scale Calibration Register (RS2, RS1, RS0 = Changes to Ordering Guide ... 50 1, 1, 0); Power-On/Reset Status: 0x1F4000 Section .. 22 Changes to Calibration Sequences Section .. 23
2/00—Rev. 0 to Rev. A
Changes to Circuit Description Section ... 24 Rev. B | Page 3 of 52 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT NOISE OUTPUT NOISE FOR LOW LEVEL INPUT CHANNELS (5 V OPERATION) OUTPUT NOISE FOR LOW LEVEL INPUT CHANNELS (3 V OPERATION) OUTPUT NOISE FOR HIGH LEVEL INPUT CHANNEL AIN3 (5 V OPERATION) OUTPUT NOISE FOR HIGH LEVEL INPUT CHANNEL AIN3 (3 V OPERATION) ON-CHIP REGISTERS COMMUNICATIONS REGISTER (RS2, RS1, RS0 = 0, 0, 0) Setup Register (RS2, RS1, RS0 = 0, 0, 1); Power-On/Reset Status: 0x01 Clock Register (RS2, RS1, RS0 = 0, 1, 0); Power-On/Reset Status: 0x05 Data Register (RS2, RS1, RS0 = 0, 1, 1) Test Register (RS2, RS1, RS0 = 1, 0, 0); Power-On/Reset Status: 0x00 Zero-Scale Calibration Register (RS2, RS1, RS0 = 1, 1, 0); Power-On/Reset Status: 0x1F4000 Full-Scale Calibration Register (RS2, RS1, RS0 = 1, 1, 1); Power-On/Reset Status: 0x5761AB CALIBRATION SEQUENCES CIRCUIT DESCRIPTION ANALOG INPUT ANALOG INPUT RANGES INPUT SAMPLE RATE BIPOLAR/UNIPOLAR INPUTS REFERENCE INPUT DIGITAL FILTERING FILTER CHARACTERISTICS POSTFILTERING ANALOG FILTERING CALIBRATION SELF-CALIBRATION SYSTEM CALIBRATION SPAN AND OFFSET LIMITS ON THE LOW LEVEL INPUT CHANNELS, AIN1 AND AIN2 SPAN AND OFFSET LIMITS ON THE HIGH LEVEL INPUT CHANNEL AIN3 POWER-UP AND CALIBRATION USING THE AD7707 CLOCKING AND OSCILLATOR CIRCUIT SYSTEM SYNCHRONIZATION RESET INPUT STANDBY MODE ACCURACY DRIFT CONSIDERATIONS POWER SUPPLIES SUPPLY CURRENT GROUNDING AND LAYOUT DIGITAL INTERFACE CONFIGURING THE AD7707 MICROCOMPUTER/MICROPROCESSOR INTERFACING AD7707 TO 68HC11 INTERFACE AD7707 TO 8XC51 INTERFACE CODE FOR SETTING UP THE AD7707 C CODE FOR INTERFACING AD7707 TO 68HC11 APPLICATIONS INFORMATION DATA ACQUISITION SMART VALVE/ACTUATOR CONTROL PRESSURE MEASUREMENT THERMOCOUPLE MEASUREMENT RTD MEASUREMENT CHART RECORDERS ACCOMMODATING VARIOUS HIGH LEVEL INPUT RANGES TYPICAL INPUT CURRENTS OUTPUT NOISE FOR HIGH LEVEL INPUT CHANNEL, AIN3 5 V OPERATION 3 V OPERATION OUTLINE DIMENSIONS ORDERING GUIDE