Datasheet AD1938 (Analog Devices) - 8

AD1938 Data Sheet ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 8.
θ
Parameter Rating
JA represents thermal resistance, junction-to-ambient; θJC represents the thermal resistance, junction-to-case. All Analog (AVDD) −0.3 V to +3.6 V characteristics are for a 4-layer board. Digital (DVDD) −0.3 V to +3.6 V Input Current (Except Supply Pins) ±20 mA
Table 9. Thermal Resistance
Analog Input Voltage (Signal Pins) –0.3 V to AVDD + 0.3 V
Package Type θJA θJC Unit
Digital Input Voltage (Signal Pins) −0.3 V to DVDD + 0.3 V 48-Lead LQFP 50.1 17 °C/W Operating Temperature Range (Case) −40°C to +125°C Storage Temperature Range −65°C to +150°C Stresses above those listed under Absolute Maximum Ratings
ESD CAUTION
may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Rev. E | Page 8 of 32 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Test Conditions Analog Performance Specifications Crystal Oscillator Specifications Digital Input/Output Specifications Power Supply Specifications Digital Filters Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Analog-to-Digital Converters (ADCs) Digital-to-Analog Converters (DACs) Clock Signals Reset and Power-Down Serial Control Port Power Supply and Voltage Reference Serial Data Ports—Data Format Time-Division Multiplexed (TDM) Modes Daisy-Chain Mode Control Registers Definitions PLL and Clock Control Registers DAC Control Registers ADC Control Registers Additional Modes Applications Circuits Outline Dimensions Ordering Guide Automotive Products