Datasheet AD9642 (Analog Devices) - 8

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Data Sheet AD9642 TIMING SPECIFICATIONS Table 5. Parameter Test Conditions/Comments Min Typ Max Unit
SPI TIMING REQUIREMENTS See Figure 58 for SPI timing diagram tDS Setup time between the data and the rising edge of SCLK 2 ns tDH Hold time between the data and the rising edge of SCLK 2 ns tCLK Period of the SCLK 40 ns tS Setup time between CSB and SCLK 2 ns tH Hold time between CSB and SCLK 2 ns tHIGH Minimum period that SCLK should be in a logic high state 10 ns tLOW Minimum period that SCLK should be in a logic low state 10 ns tEN_SDIO Time required for the SDIO pin to switch from an input to an output 10 ns relative to the SCLK falling edge (not shown in Figure 58) tDIS_SDIO Time required for the SDIO pin to switch from an output to an input 10 ns relative to the SCLK rising edge (not shown in Figure 58) Rev. B | Page 7 of 28 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ADC DC SPECIFICATIONS ADC AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS Timing Diagram TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS THEORY OF OPERATION ADC ARCHITECTURE ANALOG INPUT CONSIDERATIONS Input Common Mode Differential Input Configurations VOLTAGE REFERENCE CLOCK INPUT CONSIDERATIONS Clock Input Options Input Clock Divider Clock Duty Cycle Jitter Considerations POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS Digital Output Enable Function (OEB) Timing Data Clock Output (DCO) SERIAL PORT INTERFACE (SPI) CONFIGURATION USING THE SPI HARDWARE INTERFACE SPI ACCESSIBLE FEATURES MEMORY MAP READING THE MEMORY MAP REGISTER TABLE Open Locations Default Values Logic Levels Transfer Register Map MEMORY MAP REGISTER TABLE APPLICATIONS INFORMATION DESIGN GUIDELINES Power and Ground Recommendations Exposed Paddle Thermal Heat Slug Recommendations VCM SPI Port OUTLINE DIMENSIONS ORDERING GUIDE