Datasheet AD7949 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 14-Bit, 8-Channel, 250 kSPS PulSAR ADC |
| 页数 / 页 | 32 / 8 — AD7949. Data Sheet. ABSOLUTE MAXIMUM RATINGS Table 5. Parameter. Rating. … |
| 修订版 | F |
| 文件格式/大小 | PDF / 767 Kb |
| 文件语言 | 英语 |
AD7949. Data Sheet. ABSOLUTE MAXIMUM RATINGS Table 5. Parameter. Rating. ESD CAUTION
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AD7949 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 5.
Stresses at or above those listed under Absolute Maximum
Parameter Rating
Ratings may cause permanent damage to the product. This is a Analog Inputs stress rating only; functional operation of the product at these INx,1 COM1 GND − 0.3 V to VDD + 0.3 V or any other conditions above those indicated in the operational or VDD ± 130 mA section of this specification is not implied. Operation beyond REF, REFIN GND − 0.3 V to VDD + 0.3 V the maximum operating conditions for extended periods may Supply Voltages affect product reliability. VDD, VIO to GND −0.3 V to +7 V
ESD CAUTION
VIO to VDD −0.3 V to VDD + 0.3 V DIN, CNV, SCK to GND −0.3 V to VIO + 0.3 V SDO to GND −0.3 V to VIO + 0.3 V Storage Temperature Range −65°C to +150°C Junction Temperature 150°C θJA Thermal Impedance (LFCSP) 47.6°C/W θJC Thermal Impedance (LFCSP) 4.4°C/W 1 See the Analog Inputs section. Rev. F | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION OVERVIEW CONVERTER OPERATION TRANSFER FUNCTIONS TYPICAL CONNECTION DIAGRAMS Unipolar or Bipolar Bipolar Single Supply ANALOG INPUTS Input Structure Selectable Low-Pass Filter Input Configurations Sequencer Source Resistance DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE OUTPUT/INPUT Internal Reference/Temperature Sensor External Reference and Internal Buffer External Reference Reference Decoupling POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE READING/WRITING DURING CONVERSION, FAST HOSTS READING/WRITING AFTER CONVERSION, ANY SPEED HOSTS READING/WRITING SPANNING CONVERSION, ANY SPEED HOST CONFIGURATION REGISTER, CFG GENERAL TIMING WITHOUT A BUSY INDICATOR GENERAL TIMING WITH A BUSY INDICATOR CHANNEL SEQUENCER Examples READ/WRITE SPANNING CONVERSION WITHOUT A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITH A BUSY INDICATOR APPLICATION HINTS LAYOUT EVALUATING AD7949 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
AD7949 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 5.
Stresses at or above those listed under Absolute Maximum
Parameter Rating
Ratings may cause permanent damage to the product. This is a Analog Inputs stress rating only; functional operation of the product at these INx,1 COM1 GND − 0.3 V to VDD + 0.3 V or any other conditions above those indicated in the operational or VDD ± 130 mA section of this specification is not implied. Operation beyond REF, REFIN GND − 0.3 V to VDD + 0.3 V the maximum operating conditions for extended periods may Supply Voltages affect product reliability. VDD, VIO to GND −0.3 V to +7 V
ESD CAUTION
VIO to VDD −0.3 V to VDD + 0.3 V DIN, CNV, SCK to GND −0.3 V to VIO + 0.3 V SDO to GND −0.3 V to VIO + 0.3 V Storage Temperature Range −65°C to +150°C Junction Temperature 150°C θJA Thermal Impedance (LFCSP) 47.6°C/W θJC Thermal Impedance (LFCSP) 4.4°C/W 1 See the Analog Inputs section. Rev. F | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION OVERVIEW CONVERTER OPERATION TRANSFER FUNCTIONS TYPICAL CONNECTION DIAGRAMS Unipolar or Bipolar Bipolar Single Supply ANALOG INPUTS Input Structure Selectable Low-Pass Filter Input Configurations Sequencer Source Resistance DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE OUTPUT/INPUT Internal Reference/Temperature Sensor External Reference and Internal Buffer External Reference Reference Decoupling POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE READING/WRITING DURING CONVERSION, FAST HOSTS READING/WRITING AFTER CONVERSION, ANY SPEED HOSTS READING/WRITING SPANNING CONVERSION, ANY SPEED HOST CONFIGURATION REGISTER, CFG GENERAL TIMING WITHOUT A BUSY INDICATOR GENERAL TIMING WITH A BUSY INDICATOR CHANNEL SEQUENCER Examples READ/WRITE SPANNING CONVERSION WITHOUT A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITH A BUSY INDICATOR APPLICATION HINTS LAYOUT EVALUATING AD7949 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE