Datasheet AD7923 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP |
| 页数 / 页 | 25 / 7 — AD7923. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. … |
| 修订版 | D |
| 文件格式/大小 | PDF / 428 Kb |
| 文件语言 | 英语 |
AD7923. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 3. Parameter. Rating. ESD CAUTION
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AD7923 Data Sheet ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Stresses above those listed under Absolute Maximum Ratings
Parameter Rating
may cause permanent damage to the device. This is a stress AVDD to AGND −0.3 V to +7 V rating only and functional operation of the device at these or VDRIVE to AGND −0.3 V to AVDD + 0.3 V any other conditions above those indicated in the operational Analog Input Voltage to AGND −0.3 V to AVDD + 0.3 V section of this specification is not implied. Exposure to absolute Digital Input Voltage to AGND −0.3 V to +7 V maximum rating conditions for extended periods may affect Digital Output Voltage to AGND −0.3 V to AVDD + 0.3 V device reliability. REFIN to AGND −0.3 V to AVDD + 0.3 V Input Current to Any Pin Except ±10 mA Supplies1 Operating Temperature Range Commercial (B Version) −40°C to +125°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TSSOP Package, Power Dissipation 450 mW θJA Thermal Impedance 150.4°C/W (TSSOP) θJC Thermal Impedance 27.6°C/W (TSSOP) Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Pb-free Temperature, Soldering Reflow 260(+0)°C ESD 1.5 kV 1 Transient currents of up to 100 mA do not cause SCR latchup.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. D | Page 6 of 24 Document Outline Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Control Register Descriptions Sequencer Operation Theory of Operation Circuit Information Converter Operation Analog Input ADC Transfer Function Handling Bipolar Input Signals Typical Connection Diagram Analog Input Selection Digital Inputs VDRIVE Reference Modes of Operation Normal Mode (PM1 = PM0 = 1) Full Shutdown (PM1 = 1, PM0 = 0) Auto Shutdown (PM1 = 0, PM0 = 1) Powering Up the AD7923 Power vs. Throughput Rate Serial Interface Writing Between Conversions Microprocessor Interfacing AD7923-to-TMS320C541 AD7923-to-ADSP-21xx AD7923-to-DSP563xx Application Hints Grounding and Layout Outline Dimensions Ordering Guide Automotive Products
AD7923 Data Sheet ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Stresses above those listed under Absolute Maximum Ratings
Parameter Rating
may cause permanent damage to the device. This is a stress AVDD to AGND −0.3 V to +7 V rating only and functional operation of the device at these or VDRIVE to AGND −0.3 V to AVDD + 0.3 V any other conditions above those indicated in the operational Analog Input Voltage to AGND −0.3 V to AVDD + 0.3 V section of this specification is not implied. Exposure to absolute Digital Input Voltage to AGND −0.3 V to +7 V maximum rating conditions for extended periods may affect Digital Output Voltage to AGND −0.3 V to AVDD + 0.3 V device reliability. REFIN to AGND −0.3 V to AVDD + 0.3 V Input Current to Any Pin Except ±10 mA Supplies1 Operating Temperature Range Commercial (B Version) −40°C to +125°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TSSOP Package, Power Dissipation 450 mW θJA Thermal Impedance 150.4°C/W (TSSOP) θJC Thermal Impedance 27.6°C/W (TSSOP) Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Pb-free Temperature, Soldering Reflow 260(+0)°C ESD 1.5 kV 1 Transient currents of up to 100 mA do not cause SCR latchup.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. D | Page 6 of 24 Document Outline Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Control Register Descriptions Sequencer Operation Theory of Operation Circuit Information Converter Operation Analog Input ADC Transfer Function Handling Bipolar Input Signals Typical Connection Diagram Analog Input Selection Digital Inputs VDRIVE Reference Modes of Operation Normal Mode (PM1 = PM0 = 1) Full Shutdown (PM1 = 1, PM0 = 0) Auto Shutdown (PM1 = 0, PM0 = 1) Powering Up the AD7923 Power vs. Throughput Rate Serial Interface Writing Between Conversions Microprocessor Interfacing AD7923-to-TMS320C541 AD7923-to-ADSP-21xx AD7923-to-DSP563xx Application Hints Grounding and Layout Outline Dimensions Ordering Guide Automotive Products