Datasheet AD7911, AD7921 (Analog Devices) - 2

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AD7911/AD7921 TABLE OF CONTENTS
Specifications... 3 Analog Input ... 16 AD7911 Specifications... 3 Digital Inputs .. 17 AD7921 Specifications... 5 DIN Input.. 17 Timing Specifications .. 7 DOUT Output .. 17 Timing Diagrams.. 7 Modes of Operation ... 18 Timing Examples.. 8 Normal Mode.. 18 Absolute Maximum Ratings.. 9 Power-Down Mode .. 18 ESD Caution.. 9 Power-Up Time .. 19 Pin Configurations and Function Descriptions ... 10 Power vs. Throughput Rate... 20 Terminology .. 11 Serial Interface .. 21 Typical Performance Characteristics ... 13 Microprocessor Interfacing... 22 Circuit Information .. 15 Application Hints ... 24 Converter Operation.. 15 Grounding and Layout .. 24 ADC Transfer Function... 15 Outline Dimensions ... 25 Typical Connection Diagram ... 16 Ordering Guide .. 25
REVISION HISTORY 5/11—Rev. 0 to Rev. A
Updated Outline Dimensions ... 25 Changes to Ordering Guide .. 25
4/04—Revision 0: Initial Version
Rev. A | Page 2 of 28 Document Outline REVISION HISTORY SPECIFICATIONS AD7911 SPECIFICATIONS AD7921 SPECIFICATIONS TIMING SPECIFICATIONS TIMING DIAGRAMS TIMING EXAMPLES Timing Example 1 Timing Example 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT DIGITAL INPUTS DIN INPUT DOUT OUTPUT MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7911/AD7921 to TMS320C541 Interface AD7911/AD7921 to ADSP-218x AD7911/AD7921 to DSP563xx Interface APPLICATION HINTS GROUNDING AND LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE