Datasheet AD7796, AD7797 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | Low Power 24-Bit Sigma-Delta A/D Converter for Bridge Sensors |
| 页数 / 页 | 24 / 7 — Data Sheet. AD7796/AD7797. ABSOLUTE MAXIMUM RATINGS. THERMAL RESISTANCE. … |
| 修订版 | B |
| 文件格式/大小 | PDF / 483 Kb |
| 文件语言 | 英语 |
Data Sheet. AD7796/AD7797. ABSOLUTE MAXIMUM RATINGS. THERMAL RESISTANCE. Table 3. Parameter. Rating. Table 4. Package Type. θJA. θJC. Unit
该数据表的模型线
文件文字版本
Data Sheet AD7796/AD7797 ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
Table 3.
soldered in a circuit board for surface-mount packages.
Parameter Rating
AVDD to GND −0.3 V to +7 V
Table 4.
DVDD to GND −0.3 V to +7 V
Package Type θJA θJC Unit
Analog Input Voltage to GND −0.3 V to AVDD + 0.3 V TSSOP 128 14 °C/W Reference Input Voltage to GND −0.3 V to AVDD + 0.3 V Digital Input Voltage to GND −0.3 V to DV DD + 0.3 V Digital Output Voltage to GND −0.3 V to DVDD + 0.3 V
ESD CAUTION
AIN/Digital Input Current 10 mA Operating Temperature Range −40°C to +85°C Storage Temperature Range −65°C to +150°C Maximum Junction Temperature 150°C Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Rev. B | Page 7 of 24 Document Outline FEATURES INTERFACE APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS RMS NOISE AND RESOLUTION SPECIFICATIONS TYPICAL PERFORMANCE CHARACTERISTICS ON-CHIP REGISTERS COMMUNICATION REGISTER RS2, RS1, RS0 = 0, 0, 0 STATUS REGISTER RS2, RS1, RS0 = 0, 0, 0; Power-On/Reset = 0x80 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 = 0x0000 (AD7796)/0x000000 (AD7797) ID REGISTER RS2, RS1, RS0 = 1, 0, 0; Power-On/Reset = 0x5A (AD7796)/0x5B (AD7797) OFFSET REGISTER RS2, RS1, RS0 = 1, 1, 0; Power-On/Reset = 0x8000 (AD7796)/0x800000 (AD7797) FULL-SCALE REGISTER RS2, RS1, RS0 = 1, 1, 1; Power-On/Reset = 0x5XXX (AD7796)/0x5XXX00 (AD7797) ADC CIRCUIT INFORMATION OVERVIEW DIGITAL INTERFACE Single Conversion Mode Continuous Conversion Mode Continuous Read Mode CIRCUIT DESCRIPTION ANALOG INPUT CHANNEL BIPOLAR/UNIPOLAR CONFIGURATION DATA OUTPUT CODING REFERENCE RESET BURNOUT CURRENTS AVDD MONITOR TEMPERATURE MONITOR CALIBRATION GROUNDING AND LAYOUT APPLICATIONS INFORMATION WEIGH SCALES OUTLINE DIMENSIONS ORDERING GUIDE
TA = 25°C, unless otherwise noted.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
Table 3.
soldered in a circuit board for surface-mount packages.
Parameter Rating
AVDD to GND −0.3 V to +7 V
Table 4.
DVDD to GND −0.3 V to +7 V
Package Type θJA θJC Unit
Analog Input Voltage to GND −0.3 V to AVDD + 0.3 V TSSOP 128 14 °C/W Reference Input Voltage to GND −0.3 V to AVDD + 0.3 V Digital Input Voltage to GND −0.3 V to DV DD + 0.3 V Digital Output Voltage to GND −0.3 V to DVDD + 0.3 V
ESD CAUTION
AIN/Digital Input Current 10 mA Operating Temperature Range −40°C to +85°C Storage Temperature Range −65°C to +150°C Maximum Junction Temperature 150°C Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Rev. B | Page 7 of 24 Document Outline FEATURES INTERFACE APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS RMS NOISE AND RESOLUTION SPECIFICATIONS TYPICAL PERFORMANCE CHARACTERISTICS ON-CHIP REGISTERS COMMUNICATION REGISTER RS2, RS1, RS0 = 0, 0, 0 STATUS REGISTER RS2, RS1, RS0 = 0, 0, 0; Power-On/Reset = 0x80 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 = 0x0000 (AD7796)/0x000000 (AD7797) ID REGISTER RS2, RS1, RS0 = 1, 0, 0; Power-On/Reset = 0x5A (AD7796)/0x5B (AD7797) OFFSET REGISTER RS2, RS1, RS0 = 1, 1, 0; Power-On/Reset = 0x8000 (AD7796)/0x800000 (AD7797) FULL-SCALE REGISTER RS2, RS1, RS0 = 1, 1, 1; Power-On/Reset = 0x5XXX (AD7796)/0x5XXX00 (AD7797) ADC CIRCUIT INFORMATION OVERVIEW DIGITAL INTERFACE Single Conversion Mode Continuous Conversion Mode Continuous Read Mode CIRCUIT DESCRIPTION ANALOG INPUT CHANNEL BIPOLAR/UNIPOLAR CONFIGURATION DATA OUTPUT CODING REFERENCE RESET BURNOUT CURRENTS AVDD MONITOR TEMPERATURE MONITOR CALIBRATION GROUNDING AND LAYOUT APPLICATIONS INFORMATION WEIGH SCALES OUTLINE DIMENSIONS ORDERING GUIDE