Datasheet AD7291 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor |
| Seiten / Seite | 29 / 7 — AD7291. Data Sheet. ABSOLUTE MAXIMUM RATINGS Table 4. Parameter. Rating. … |
| Revision | C |
| Dateiformat / Größe | PDF / 580 Kb |
| Dokumentensprache | Englisch |
AD7291. Data Sheet. ABSOLUTE MAXIMUM RATINGS Table 4. Parameter. Rating. THERMAL RESISTANCE. Table 5. Thermal Resistance
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AD7291 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 4.
Stresses at or above those listed under Absolute Maximum
Parameter Rating
Ratings may cause permanent damage to the product. This is a V stress rating only; functional operation of the product at these DD to GND1, GND −0.3 V to +5 V or any other conditions above those indicated in the operational VDRIVE to GND1, GND −0.3 V to +5 V section of this specification is not implied. Operation beyond Analog Input Voltage to GND1 −0.3 V to +3 V the maximum operating conditions for extended periods may Digital Input Voltage to GND1 −0.3 V to VDRIVE + 0.3 V affect product reliability. Digital Output Voltage to GND1 −0.3 V to VDRIVE + 0.3 V VREF to GND1 −0.3 V to +3 V
THERMAL RESISTANCE
GND to GND1 −0.3 V to +0.3 V
Table 5. Thermal Resistance
Input Current to Any Pin Except Supplies1 ±10 mA Operating Temperature Range −40°C to +125°C
Package Type θJA θJC Unit
Storage Temperature Range −65°C to +150°C 20-Lead LFCSP 52 6.5 °C/W Junction Temperature 150°C Pb-free Temperature, Soldering
ESD CAUTION
Reflow 260(+0)°C ESD 2 kV 1Transient currents of up to 100 mA do not cause latch-up. Rev. C | Page 6 of 28 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS I2C TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CIRCUIT INFORMATION CONVERTER OPERATION ANALOG INPUT ADC TRANSFER FUNCTION TEMPERATURE SENSOR OPERATION TEMPERATURE SENSOR AVERAGING Temperature Value Format VDRIVE THE INTERNAL OR EXTERNAL REFERENCE RESET INTERNAL REGISTER STRUCTURE ADDRESS POINTER REGISTER COMMAND REGISTER (0x00) Sample Delay and Bit Trial Delay VOLTAGE CONVERSION RESULT REGISTER (0x01) Temperature Value Format TSENSE CONVERSION RESULT REGISTER (0x02) TSENSE AVERAGE RESULT REGISTER (0X03) LIMIT REGISTERS (0X04 TO 0X1E) DATAHIGH Register DATALOW Register HYSTERESIS REGISTER ALERT STATUS REGISTER A AND ALERT STATUS REGISTER B (0x1F AND 0x20) I2C INTERFACE SERIAL BUS ADDRESS BYTE GENERAL I2C TIMING WRITING TO THE AD7291 WRITING TWO BYTES OF DATA TO A 16-BIT REGISTER WRITING TO MULTIPLE REGISTERS READING DATA FROM THE AD7291 READING TWO BYTES OF DATA FROM A 16-BIT REGISTER MODES OF OPERATION COMMAND MODE AUTOCYCLE MODE OUTLINE DIMENSIONS ORDERING GUIDE
Stresses at or above those listed under Absolute Maximum
Parameter Rating
Ratings may cause permanent damage to the product. This is a V stress rating only; functional operation of the product at these DD to GND1, GND −0.3 V to +5 V or any other conditions above those indicated in the operational VDRIVE to GND1, GND −0.3 V to +5 V section of this specification is not implied. Operation beyond Analog Input Voltage to GND1 −0.3 V to +3 V the maximum operating conditions for extended periods may Digital Input Voltage to GND1 −0.3 V to VDRIVE + 0.3 V affect product reliability. Digital Output Voltage to GND1 −0.3 V to VDRIVE + 0.3 V VREF to GND1 −0.3 V to +3 V
THERMAL RESISTANCE
GND to GND1 −0.3 V to +0.3 V
Table 5. Thermal Resistance
Input Current to Any Pin Except Supplies1 ±10 mA Operating Temperature Range −40°C to +125°C
Package Type θJA θJC Unit
Storage Temperature Range −65°C to +150°C 20-Lead LFCSP 52 6.5 °C/W Junction Temperature 150°C Pb-free Temperature, Soldering
ESD CAUTION
Reflow 260(+0)°C ESD 2 kV 1Transient currents of up to 100 mA do not cause latch-up. Rev. C | Page 6 of 28 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS I2C TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CIRCUIT INFORMATION CONVERTER OPERATION ANALOG INPUT ADC TRANSFER FUNCTION TEMPERATURE SENSOR OPERATION TEMPERATURE SENSOR AVERAGING Temperature Value Format VDRIVE THE INTERNAL OR EXTERNAL REFERENCE RESET INTERNAL REGISTER STRUCTURE ADDRESS POINTER REGISTER COMMAND REGISTER (0x00) Sample Delay and Bit Trial Delay VOLTAGE CONVERSION RESULT REGISTER (0x01) Temperature Value Format TSENSE CONVERSION RESULT REGISTER (0x02) TSENSE AVERAGE RESULT REGISTER (0X03) LIMIT REGISTERS (0X04 TO 0X1E) DATAHIGH Register DATALOW Register HYSTERESIS REGISTER ALERT STATUS REGISTER A AND ALERT STATUS REGISTER B (0x1F AND 0x20) I2C INTERFACE SERIAL BUS ADDRESS BYTE GENERAL I2C TIMING WRITING TO THE AD7291 WRITING TWO BYTES OF DATA TO A 16-BIT REGISTER WRITING TO MULTIPLE REGISTERS READING DATA FROM THE AD7291 READING TWO BYTES OF DATA FROM A 16-BIT REGISTER MODES OF OPERATION COMMAND MODE AUTOCYCLE MODE OUTLINE DIMENSIONS ORDERING GUIDE