Datasheet AD7762 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 625 kSPS, 24-Bit, 109 dB Sigma-Delta ADC with On-Chip Buffer |
| 页数 / 页 | 29 / 7 — AD7762. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 4. Parameters. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 628 Kb |
| 文件语言 | 英语 |
AD7762. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 4. Parameters. Rating. ESD CAUTION
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AD7762 Data Sheet ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Stresses above those listed under Absolute Maximum Ratings
Parameters Rating
may cause permanent damage to the device. This is a stress AVDD1 to GND −0.3 V to +3 V rating only; functional operation of the device at these or any AVDD2–AVDD4 to GND −0.3 V to +6 V other conditions above those listed in the operational sections DVDD to GND −0.3 V to +3 V of this specification is not implied. Exposure to absolute VDRIVE to GND −0.3 V to +3 V maximum rating conditions for extended periods may affect VIN+, VIN– to GND −0.3 V to +6 V device reliability. Digital input voltage to GND1 −0.3 V to DVDD + 0.3 V MCLK to MCLKGND −0.3 V to +6 V
ESD CAUTION
VREF to GND2 −0.3 V to AVDD4 + 0.3 V AGND to DGND −0.3 V to +0.3 V Input Current to Any Pin ±10 mA Except Supplies3 Operating Temperature Range Commercial −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TQFP Exposed Paddle Package θJA Thermal Impedance 92.7°C/W θJC Thermal Impedance 5.1°C/W Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C ESD 600 V 1 Absolute maximum voltage on digital inputs is 3.0 V or DVDD + 0.3 V, whichever is lower. 2 Absolute maximum voltage on VREF input is 6.0 V or AVDD4 + 0.3 V, whichever is lower. 3 Transient currents of up to 200 mA do not cause SCR latch-up. Rev. A | Page 6 of 28 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation AD7762 Interface Reading Data Sharing the Parallel Bus Writing to the AD7762 Reading Status and Other Registers Clocking the AD7762 Example 1 Example 2 Driving the AD7762 Using the AD7762 Bias Resistor Selection Decoupling and Layout Recommendations Supply Decoupling Additional Decoupling Reference Voltage Filtering Differential Amplifier Components Layout Considerations Programmable FIR Filter Downloading a User-Defined Filter Example Filter Download AD7762 Registers Control Register 1—Reg 0x0001 Default Value 0x001A Control Register 2—Address 0x0002 Default Value 0x009B Status Register (Read Only) Offset Register—Address 0x0003 Non-bitmapped, Default Value 0x0000 Gain Register—Address 0x0004 Non-bitmapped, Default Value 0xA000 Overrange Register—Address 0x0005 Non-bitmapped, Default Value 0xCCCC Outline Dimensions Ordering Guide
AD7762 Data Sheet ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Stresses above those listed under Absolute Maximum Ratings
Parameters Rating
may cause permanent damage to the device. This is a stress AVDD1 to GND −0.3 V to +3 V rating only; functional operation of the device at these or any AVDD2–AVDD4 to GND −0.3 V to +6 V other conditions above those listed in the operational sections DVDD to GND −0.3 V to +3 V of this specification is not implied. Exposure to absolute VDRIVE to GND −0.3 V to +3 V maximum rating conditions for extended periods may affect VIN+, VIN– to GND −0.3 V to +6 V device reliability. Digital input voltage to GND1 −0.3 V to DVDD + 0.3 V MCLK to MCLKGND −0.3 V to +6 V
ESD CAUTION
VREF to GND2 −0.3 V to AVDD4 + 0.3 V AGND to DGND −0.3 V to +0.3 V Input Current to Any Pin ±10 mA Except Supplies3 Operating Temperature Range Commercial −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TQFP Exposed Paddle Package θJA Thermal Impedance 92.7°C/W θJC Thermal Impedance 5.1°C/W Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C ESD 600 V 1 Absolute maximum voltage on digital inputs is 3.0 V or DVDD + 0.3 V, whichever is lower. 2 Absolute maximum voltage on VREF input is 6.0 V or AVDD4 + 0.3 V, whichever is lower. 3 Transient currents of up to 200 mA do not cause SCR latch-up. Rev. A | Page 6 of 28 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation AD7762 Interface Reading Data Sharing the Parallel Bus Writing to the AD7762 Reading Status and Other Registers Clocking the AD7762 Example 1 Example 2 Driving the AD7762 Using the AD7762 Bias Resistor Selection Decoupling and Layout Recommendations Supply Decoupling Additional Decoupling Reference Voltage Filtering Differential Amplifier Components Layout Considerations Programmable FIR Filter Downloading a User-Defined Filter Example Filter Download AD7762 Registers Control Register 1—Reg 0x0001 Default Value 0x001A Control Register 2—Address 0x0002 Default Value 0x009B Status Register (Read Only) Offset Register—Address 0x0003 Non-bitmapped, Default Value 0x0000 Gain Register—Address 0x0004 Non-bitmapped, Default Value 0xA000 Overrange Register—Address 0x0005 Non-bitmapped, Default Value 0xCCCC Outline Dimensions Ordering Guide