link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 3 link to page 4 link to page 5 link to page 5 link to page 5 link to page 6 link to page 7 link to page 9 link to page 10 link to page 10 link to page 10 link to page 10 link to page 11 link to page 11 link to page 12 link to page 13 link to page 14 link to page 15 link to page 15 link to page 16 link to page 17 link to page 17 link to page 18 link to page 18 AD7091Data SheetTABLE OF CONTENTS Features .. 1 Circuit Information .. 10 Applications ... 1 Converter Operation .. 10 Functional Block Diagram .. 1 ADC Transfer Function ... 10 General Description ... 1 Typical Connection Diagram ... 11 Product Highlights ... 1 Analog Input ... 11 Revision History ... 2 Modes of Operation ... 12 Specifications ... 3 Power Consumption .. 13 Timing Specifications .. 4 Multiplexer Applications ... 14 Absolute Maximum Ratings .. 5 Serial Interface .. 15 Thermal Resistance .. 5 Busy Indicator Enabled.. 15 ESD Caution .. 5 Busy Indicator Disabled .. 16 Pin Configuration and Function Descriptions ... 6 Software Reset ... 17 Typical Performance Characteristics ... 7 Interfacing with an 8-/16-Bit SPI Bus .. 17 Terminology .. 9 Outline Dimensions ... 18 Theory of Operation .. 10 Ordering Guide .. 18 REVISION HISTORY 3/15—Rev. A to Rev. B Changes to Typical Connection Diagram Section .. 11 Changes to Busy Indicator Enabled Section .. 15 6/13—Rev. 0 to Rev. A Changes to Figure 22 .. 13 Added Multiplexer Applications Section .. 14 Updated Outline Dimensions ... 18 10/12—Revision 0: Initial Version Rev. B | Page 2 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT MODES OF OPERATION Normal Mode Power-Down Mode POWER CONSUMPTION Power Consumption in Normal Mode Power Consumption Using a Combination of Normal Mode and Power-Down Mode MULTIPLEXER APPLICATIONS SERIAL INTERFACE BUSY INDICATOR ENABLED BUSY INDICATOR DISABLED SOFTWARE RESET INTERFACING WITH AN 8-/16-BIT SPI BUS OUTLINE DIMENSIONS ORDERING GUIDE