Datasheet AD7688 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 500 kSPS 16- BIT Differential PulSAR A/D Converter in µSOIC/QFN |
| Seiten / Seite | 29 / 7 — AD7688. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 5. Parameter. Rating. … |
| Revision | B |
| Dateiformat / Größe | PDF / 570 Kb |
| Dokumentensprache | Englisch |
AD7688. Data Sheet. ABSOLUTE MAXIMUM RATINGS. Table 5. Parameter. Rating. THERMAL RESISTANCE. Table 6. Thermal Resistance. Package Type
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AD7688 Data Sheet ABSOLUTE MAXIMUM RATINGS
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress
Table 5.
rating only; functional operation of the device at these or any
Parameter Rating
other conditions above those indicated in the operational Analog Inputs section of this specification is not implied. Exposure to absolute IN+1, IN−1 GND − 0.3 V to VDD + 0.3 V maximum rating conditions for extended periods may affect or ±130 mA device reliability. REF GND − 0.3 V to VDD + 0.3 V Supply Voltages
THERMAL RESISTANCE
VDD, VIO to GND −0.3 V to +7 V θJA is specified for the worst-case conditions, that is, a device VDD to VIO ±7 V soldered in a circuit board for surface-mount packages. Digital Inputs to GND −0.3 V to VIO + 0.3 V Digital Outputs to GND −0.3 V to VIO + 0.3 V
Table 6. Thermal Resistance
Storage Temperature Range −65°C to +150°C
Package Type θJA θJC Unit
Junction Temperature 150°C 10-Lead LFCSP 48.7 2.96 °C Lead Temperature Range JEDEC J-STD-20 10-Lead MSOP 200 44 °C 1 See the Analog Input section.
ESD CAUTION 500
µ
A IOL TO SDO 1.4V CL 50pF 500
µ
A IOH
02973-003 Figure 3. Load Circuit for Digital Interface Timing
70% VIO 30% VIO tDELAY tDELAY 2V OR VIO – 0.5V1 2V OR VIO – 0.5V1 0.8V OR 0.5V2 0.8V OR 0.5V2 12V IF VIO ABOVE 2.5V, VIO – 0.5V IF VIO BELOW 2.5V. 20.8V IF VIO ABOVE 2.5V, 0.5V IF VIO BELOW 2.5V.
02973-004 Figure 4. Voltage Levels for Timing Rev. B | Page 6 of 28 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Single-to-Differential Driver Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode 3-Wire, No BUSY Indicator /CS Mode 3-Wire with BUSY Indicator /CS Mode 4-Write, No BUSY Indicator /CS Mode 4-Wire with BUSY Indicator Chain Mode, No BUSY Indicator Chain Mode with BUSY Indicator Application Hints Layout Evaluating the AD7688 Performance Outline Dimensions Ordering Guide
AD7688 Data Sheet ABSOLUTE MAXIMUM RATINGS
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress
Table 5.
rating only; functional operation of the device at these or any
Parameter Rating
other conditions above those indicated in the operational Analog Inputs section of this specification is not implied. Exposure to absolute IN+1, IN−1 GND − 0.3 V to VDD + 0.3 V maximum rating conditions for extended periods may affect or ±130 mA device reliability. REF GND − 0.3 V to VDD + 0.3 V Supply Voltages
THERMAL RESISTANCE
VDD, VIO to GND −0.3 V to +7 V θJA is specified for the worst-case conditions, that is, a device VDD to VIO ±7 V soldered in a circuit board for surface-mount packages. Digital Inputs to GND −0.3 V to VIO + 0.3 V Digital Outputs to GND −0.3 V to VIO + 0.3 V
Table 6. Thermal Resistance
Storage Temperature Range −65°C to +150°C
Package Type θJA θJC Unit
Junction Temperature 150°C 10-Lead LFCSP 48.7 2.96 °C Lead Temperature Range JEDEC J-STD-20 10-Lead MSOP 200 44 °C 1 See the Analog Input section.
ESD CAUTION 500
µ
A IOL TO SDO 1.4V CL 50pF 500
µ
A IOH
02973-003 Figure 3. Load Circuit for Digital Interface Timing
70% VIO 30% VIO tDELAY tDELAY 2V OR VIO – 0.5V1 2V OR VIO – 0.5V1 0.8V OR 0.5V2 0.8V OR 0.5V2 12V IF VIO ABOVE 2.5V, VIO – 0.5V IF VIO BELOW 2.5V. 20.8V IF VIO ABOVE 2.5V, 0.5V IF VIO BELOW 2.5V.
02973-004 Figure 4. Voltage Levels for Timing Rev. B | Page 6 of 28 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Single-to-Differential Driver Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode 3-Wire, No BUSY Indicator /CS Mode 3-Wire with BUSY Indicator /CS Mode 4-Write, No BUSY Indicator /CS Mode 4-Wire with BUSY Indicator Chain Mode, No BUSY Indicator Chain Mode with BUSY Indicator Application Hints Layout Evaluating the AD7688 Performance Outline Dimensions Ordering Guide