Datasheet AD9254 (Analog Devices) - 3

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AD9254 TABLE OF CONTENTS
Features .. 1 Timing ... 20 Applications... 1 Serial Port Interface (SPI).. 21 General Description ... 1 Configuration Using the SPI... 21 Functional Block Diagram .. 1 Hardware Interface... 21 Product Highlights ... 1 Configuration Without the SPI .. 21 Revision History ... 2 Memory Map .. 22 Specifications... 3 Reading the Memory Map Register Table... 22 DC Specifications ... 3 Memory Map Register Table... 23 AC Specifications.. 4 Layout Considerations... 25 Digital Specifications ... 5 Power and Ground Recommendations ... 25 Switching Specifications .. 6 CML ... 25 Timing Diagram ... 6 RBIAS... 25 Absolute Maximum Ratings.. 7 Reference Decoupling.. 25 Thermal Resistance .. 7 Evaluation Board .. 26 ESD Caution.. 7 Power Supplies .. 26 Pin Configuration and Function Descriptions... 8 Input Signals.. 26 Equivalent Circuits ... 9 Output Signals .. 26 Typical Performance Characteristics ... 10 Default Operation and Jumper Selection Settings... 27 Theory of Operation .. 14 Alternative Clock Configurations.. 27 Analog Input Considerations.. 14 Alternative Analog Input Drive Configuration.. 27 Differential Input Configurations .. 15 Schematics... 29 Voltage Reference ... 16 Evaluation Board Layout... 34 Clock Input Considerations .. 17 Bill of Materials... 37 Jitter Considerations .. 19 Outline Dimensions ... 40 Power Dissipation and Standby Mode... 19 Ordering Guide .. 40 Digital Outputs ... 20
REVISION HISTORY 10/06—Revision 0: Initial Version
Rev. 0 | Page 2 of 40 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS TIMING DIAGRAM ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS EQUIVALENT CIRCUITS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ANALOG INPUT CONSIDERATIONS DIFFERENTIAL INPUT CONFIGURATIONS VOLTAGE REFERENCE CLOCK INPUT CONSIDERATIONS JITTER CONSIDERATIONS POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS TIMING SERIAL PORT INTERFACE (SPI) MEMORY MAP READING THE MEMORY MAP REGISTER TABLE MEMORY MAP REGISTER TABLE LAYOUT CONSIDERATIONS POWER AND GROUND RECOMMENDATIONS CML RBIAS REFERENCE DECOUPLING EVALUATION BOARD POWER SUPPLIES INPUT SIGNALS OUTPUT SIGNALS DEFAULT OPERATION AND JUMPER SELECTION SETTINGS ALTERNATIVE CLOCK CONFIGURATIONS ALTERNATIVE ANALOG INPUT DRIVE CONFIGURATION SCHEMATICS EVALUATION BOARD LAYOUT BILL OF MATERIALS OUTLINE DIMENSIONS ORDERING GUIDE