Datasheet AD7734 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 4-Channel, ±10 V Input Range, High Throughput, 24-Bit Sigma-Delta A/D Converter |
| Seiten / Seite | 33 / 9 — AD7734. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. … |
| Revision | B |
| Dateiformat / Größe | PDF / 711 Kb |
| Dokumentensprache | Englisch |
AD7734. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. ESD CAUTION
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AD7734 Data Sheet ABSOLUTE MAXIMUM RATINGS
T Stresses at or above those listed under Absolute Maximum A = 25°C, unless otherwise noted. Ratings may cause permanent damage to the product. This is a
Table 3.
stress rating only; functional operation of the product at these
Parameter Rating
or any other conditions above those indicated in the operational AVDD to AGND, DVDD to DGND −0.3 V to +7 V section of this specification is not implied. Operation beyond AGND to DGND −0.3 V to +0.3 V the maximum operating conditions for extended periods may AVDD to DVDD −5 V to +5 V affect product reliability. AIN to AGND −50 V to +50 V
ESD CAUTION
BIAS to AGND −0.3 V to AVDD + 0.3 V REFIN+, REFIN− to AGND −0.3 V to AVDD + 0.3 V MUX0, INTBIAS to AGND −0.3 V to AVDD + 0.3 V P0, P1 Voltage to AGND −0.3 V to AVDD + 0.3 V P0, P1 Current (TMAX = 70°C) 8 mA P0, P1 Current (T MAX = 85°C) 5 mA P0, P1 Current (TMAX = 105°C) 2.5 mA Digital Input Voltage to DGND −0.3 V to DVDD + 0.3 V Digital Output Voltage to DGND −0.3 V to DVDD + 0.3 V Operating Temperature Range −40°C to +105°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TSSOP, Power Dissipation 660 mW θJA Thermal Impedance 97.9°C/W Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Rev. B | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT NOISE AND RESOLUTION SPECIFICATION CHOPPING ENABLED CHOPPING DISABLED PIN CONFIGURATION AND FUNCTION DESCRIPTIONS REGISTER DESCRIPTION REGISTER ACCESS COMMUNICATIONS REGISTER I/O PORT REGISTER REVISION REGISTER TEST REGISTER ADC STATUS REGISTER CHECKSUM REGISTER ADC ZERO-SCALE CALIBRATION REGISTER ADC FULL-SCALE REGISTER CHANNEL DATA REGISTERS CHANNEL ZERO-SCALE CALIBRATION REGISTERS CHANNEL FULL-SCALE CALIBRATION REGISTERS CHANNEL STATUS REGISTERS CHANNEL SETUP REGISTERS CHANNEL CONVERSION TIME REGISTERS MODE REGISTER DIGITAL INTERFACE DESCRIPTION HARDWARE RESET ACCESS THE AD7734 REGISTERS SINGLE CONVERSION AND READING DATA DUMP MODE CONTINUOUS CONVERSION MODE CONTINUOUS READ (CONTINUOUS CONVERSION) MODE CIRCUIT DESCRIPTION ANALOG FRONT END ANALOG INPUT’S EXTENDED VOLTAGE RANGE CHOPPING MULTIPLEXER, CONVERSION, AND DATA OUTPUT TIMING Σ-Δ ADC FREQUENCY RESPONSE VOLTAGE REFERENCE INPUTS REFERENCE DETECT I/O PORT CALIBRATION ADC ZERO-SCALE SELF-CALIBRATION PER CHANNEL SYSTEM CALIBRATION OUTLINE DIMENSIONS ORDERING GUIDE
T Stresses at or above those listed under Absolute Maximum A = 25°C, unless otherwise noted. Ratings may cause permanent damage to the product. This is a
Table 3.
stress rating only; functional operation of the product at these
Parameter Rating
or any other conditions above those indicated in the operational AVDD to AGND, DVDD to DGND −0.3 V to +7 V section of this specification is not implied. Operation beyond AGND to DGND −0.3 V to +0.3 V the maximum operating conditions for extended periods may AVDD to DVDD −5 V to +5 V affect product reliability. AIN to AGND −50 V to +50 V
ESD CAUTION
BIAS to AGND −0.3 V to AVDD + 0.3 V REFIN+, REFIN− to AGND −0.3 V to AVDD + 0.3 V MUX0, INTBIAS to AGND −0.3 V to AVDD + 0.3 V P0, P1 Voltage to AGND −0.3 V to AVDD + 0.3 V P0, P1 Current (TMAX = 70°C) 8 mA P0, P1 Current (T MAX = 85°C) 5 mA P0, P1 Current (TMAX = 105°C) 2.5 mA Digital Input Voltage to DGND −0.3 V to DVDD + 0.3 V Digital Output Voltage to DGND −0.3 V to DVDD + 0.3 V Operating Temperature Range −40°C to +105°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TSSOP, Power Dissipation 660 mW θJA Thermal Impedance 97.9°C/W Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Rev. B | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT NOISE AND RESOLUTION SPECIFICATION CHOPPING ENABLED CHOPPING DISABLED PIN CONFIGURATION AND FUNCTION DESCRIPTIONS REGISTER DESCRIPTION REGISTER ACCESS COMMUNICATIONS REGISTER I/O PORT REGISTER REVISION REGISTER TEST REGISTER ADC STATUS REGISTER CHECKSUM REGISTER ADC ZERO-SCALE CALIBRATION REGISTER ADC FULL-SCALE REGISTER CHANNEL DATA REGISTERS CHANNEL ZERO-SCALE CALIBRATION REGISTERS CHANNEL FULL-SCALE CALIBRATION REGISTERS CHANNEL STATUS REGISTERS CHANNEL SETUP REGISTERS CHANNEL CONVERSION TIME REGISTERS MODE REGISTER DIGITAL INTERFACE DESCRIPTION HARDWARE RESET ACCESS THE AD7734 REGISTERS SINGLE CONVERSION AND READING DATA DUMP MODE CONTINUOUS CONVERSION MODE CONTINUOUS READ (CONTINUOUS CONVERSION) MODE CIRCUIT DESCRIPTION ANALOG FRONT END ANALOG INPUT’S EXTENDED VOLTAGE RANGE CHOPPING MULTIPLEXER, CONVERSION, AND DATA OUTPUT TIMING Σ-Δ ADC FREQUENCY RESPONSE VOLTAGE REFERENCE INPUTS REFERENCE DETECT I/O PORT CALIBRATION ADC ZERO-SCALE SELF-CALIBRATION PER CHANNEL SYSTEM CALIBRATION OUTLINE DIMENSIONS ORDERING GUIDE