Datasheet AD7785 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | 3-Channel, Low Noise, Low Power, 20-Bit Σ-Δ ADC with On-Chip In-Amp and Reference |
| 页数 / 页 | 33 / 9 — AD7785. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. ESD CAUTION |
| 文件格式/大小 | PDF / 485 Kb |
| 文件语言 | 英语 |
AD7785. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. ESD CAUTION
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AD7785 ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress
Table 3.
rating only; functional operation of the device at these or any
Parameter Rating
other conditions above those listed in the operational sections AVDD to GND −0.3 V to +7 V of this specification is not implied. Exposure to absolute DVDD to GND −0.3 V to +7 V maximum rating conditions for extended periods may affect Analog Input Voltage to GND −0.3 V to AVDD + 0.3 V device reliability. Reference Input Voltage to GND −0.3 V to AVDD + 0.3 V
ESD CAUTION
Digital Input Voltage to GND −0.3 V to DVDD + 0.3 V Digital Output Voltage to GND −0.3 V to DVDD + 0.3 V AIN/Digital Input Current 10 mA Operating Temperature Range −40°C to +105°C Storage Temperature Range −65°C to +150°C Maximum Junction Temperature 150°C TSSOP θJA Thermal Impedance 150.4°C/W θJC Thermal Impedance 27.6°C/W Lead Temperature, Soldering Reflow 260°C Rev. 0 | Page 8 of 32 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTPUT NOISE AND RESOLUTION SPECIFICATIONS EXTERNAL REFERENCE INTERNAL REFERENCE TYPICAL PERFORMANCE CHARACTERISTICS ON-CHIP REGISTERS COMMUNICATIONS REGISTER RS2, RS1, RS0 = 0, 0, 0 STATUS REGISTER RS2, RS1, RS0 = 0, 0, 0; Power-On/Reset = 0x88 MODE REGISTER RS2, RS1, RS0 = 0, 0, 1; Power-On/Reset = 0x000A CONFIGURATION REGISTER RS2, RS1, RS0 = 0, 1, 0; Power-On/Reset = 0x0710 DATA REGISTER RS2, RS1, RS0 = 0, 1, 1; Power-On/Reset = 0x00000F ID REGISTER RS2, RS1, RS0 = 1, 0, 0; Power-On/Reset = 0xXB IO REGISTER RS2, RS1, RS0 = 1, 0, 1; Power-On/Reset = 0x00 OFFSET REGISTER RS2, RS1, RS0 = 1, 1, 0; Power-On/Reset = 0x800000 FULL-SCALE REGISTER RS2, RS1, RS0 = 1, 1, 1; Power-On/Reset = 0x5XXX00 ADC CIRCUIT INFORMATION OVERVIEW DIGITAL INTERFACE Single Conversion Mode Continuous Conversion Mode Continuous Read CIRCUIT DESCRIPTION ANALOG INPUT CHANNEL INSTRUMENTATION AMPLIFIER BIPOLAR/UNIPOLAR CONFIGURATION DATA OUTPUT CODING BURNOUT CURRENTS EXCITATION CURRENTS BIAS VOLTAGE GENERATOR REFERENCE RESET AVDD MONITOR CALIBRATION GROUNDING AND LAYOUT APPLICATIONS INFORMATION TEMPERATURE MEASUREMENT USING A THERMOCOUPLE TEMPERATURE MEASUREMENT USING AN RTD OUTLINE DIMENSIONS ORDERING GUIDE
TA = 25°C, unless otherwise noted. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress
Table 3.
rating only; functional operation of the device at these or any
Parameter Rating
other conditions above those listed in the operational sections AVDD to GND −0.3 V to +7 V of this specification is not implied. Exposure to absolute DVDD to GND −0.3 V to +7 V maximum rating conditions for extended periods may affect Analog Input Voltage to GND −0.3 V to AVDD + 0.3 V device reliability. Reference Input Voltage to GND −0.3 V to AVDD + 0.3 V
ESD CAUTION
Digital Input Voltage to GND −0.3 V to DVDD + 0.3 V Digital Output Voltage to GND −0.3 V to DVDD + 0.3 V AIN/Digital Input Current 10 mA Operating Temperature Range −40°C to +105°C Storage Temperature Range −65°C to +150°C Maximum Junction Temperature 150°C TSSOP θJA Thermal Impedance 150.4°C/W θJC Thermal Impedance 27.6°C/W Lead Temperature, Soldering Reflow 260°C Rev. 0 | Page 8 of 32 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTPUT NOISE AND RESOLUTION SPECIFICATIONS EXTERNAL REFERENCE INTERNAL REFERENCE TYPICAL PERFORMANCE CHARACTERISTICS ON-CHIP REGISTERS COMMUNICATIONS REGISTER RS2, RS1, RS0 = 0, 0, 0 STATUS REGISTER RS2, RS1, RS0 = 0, 0, 0; Power-On/Reset = 0x88 MODE REGISTER RS2, RS1, RS0 = 0, 0, 1; Power-On/Reset = 0x000A CONFIGURATION REGISTER RS2, RS1, RS0 = 0, 1, 0; Power-On/Reset = 0x0710 DATA REGISTER RS2, RS1, RS0 = 0, 1, 1; Power-On/Reset = 0x00000F ID REGISTER RS2, RS1, RS0 = 1, 0, 0; Power-On/Reset = 0xXB IO REGISTER RS2, RS1, RS0 = 1, 0, 1; Power-On/Reset = 0x00 OFFSET REGISTER RS2, RS1, RS0 = 1, 1, 0; Power-On/Reset = 0x800000 FULL-SCALE REGISTER RS2, RS1, RS0 = 1, 1, 1; Power-On/Reset = 0x5XXX00 ADC CIRCUIT INFORMATION OVERVIEW DIGITAL INTERFACE Single Conversion Mode Continuous Conversion Mode Continuous Read CIRCUIT DESCRIPTION ANALOG INPUT CHANNEL INSTRUMENTATION AMPLIFIER BIPOLAR/UNIPOLAR CONFIGURATION DATA OUTPUT CODING BURNOUT CURRENTS EXCITATION CURRENTS BIAS VOLTAGE GENERATOR REFERENCE RESET AVDD MONITOR CALIBRATION GROUNDING AND LAYOUT APPLICATIONS INFORMATION TEMPERATURE MEASUREMENT USING A THERMOCOUPLE TEMPERATURE MEASUREMENT USING AN RTD OUTLINE DIMENSIONS ORDERING GUIDE