AD1937ABSOLUTE MAXIMUM RATINGSTHERMAL RESISTANCETable 9. Parameter Rating θJA represents junction-to-ambient thermal resistance; Analog (AVDD) −0.3 V to +3.6 V θJC represents the junction-to-case thermal resistance. Digital (DVDD) −0.3 V to +3.6 V All characteristics are for a 4-layer board. VSUPPLY −0.3 V to +6.0 V Table 10. Input Current (Except Supply Pins) ±20 mA Package Typeθ Analog Input Voltage (Signal Pins) –0.3 V to AVDD + 0.3 V JAθJCUnit Digital Input Voltage (Signal Pins) −0.3 V to DVDD + 0.3 V 64-Lead LQFP 47 11.1 °C/W Operating Temperature Range (Case) −40°C to +125°C Storage Temperature Range −65°C to +150°C ESD CAUTION Stresses above those listed under Absolute Maximum Ratings 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. B | Page 10 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TEST CONDITIONS ANALOG PERFORMANCE SPECIFICATIONS CRYSTAL OSCILLATOR SPECIFICATIONS DIGITAL SPECIFICATIONS POWER SUPPLY SPECIFICATIONS DIGITAL FILTERS TIMING SPECIFICATIONS TIMING DIAGRAMS 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 I2C CONTROL PORT POWER SUPPLY AND VOLTAGE REFERENCE SERIAL DATA PORTS—DATA FORMAT TIME-DIVISION MULTIPLEXED (TDM) MODES DAISY-CHAIN MODE ADDITIONAL MODES CONTROL REGISTERS DEFINITIONS PLL AND CLOCK CONTROL REGISTERS DAC CONTROL REGISTERS ADC CONTROL REGISTERS APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS