link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 4 link to page 5 link to page 7 link to page 8 link to page 8 link to page 8 link to page 9 link to page 10 link to page 13 link to page 14 link to page 14 link to page 14 link to page 14 link to page 14 link to page 15 link to page 15 link to page 16 link to page 16 link to page 18 link to page 18 link to page 19 link to page 20 link to page 20 link to page 22 link to page 22 AD7091RData SheetTABLE OF CONTENTS Features .. 1 Circuit Information .. 12 Applications ... 1 Converter Operation .. 12 General Description ... 1 ADC Transfer Function ... 12 Functional Block Diagram .. 1 Internal/External Voltage Reference .. 12 Product Highlights ... 1 Typical Connection Diagram ... 13 Revision History ... 2 Analog Input ... 13 Specifications ... 3 Modes of Operation ... 14 Timing Specifications .. 5 Power Consumption .. 14 Absolute Maximum Ratings .. 6 Serial Interface .. 16 Thermal Resistance .. 6 With BUSY Indicator ... 16 ESD Caution .. 6 Without BUSY Indicator ... 17 Pin Configuration and Function Descriptions ... 7 Software Reset ... 18 Typical Performance Characteristics ... 8 Interfacing With 8-/16-Bit SPI ... 18 Terminology .. 11 Outline Dimensions ... 20 Theory of Operation .. 12 Ordering Guide .. 20 REVISION HISTORY9/2016—Rev. A to Rev. B8/2012—Revision 0: Initial Version Changes to Signal-to-Noise Ratio (SNR) Parameter and Integral Nonlinearity Parameter, Table 1 ... 3 Deleted Note 3, Table 1 .. 3 5/2015—Rev. 0 to Rev. A Changes to Serial Interface Section .. 16 Rev. B | Page 2 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS 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 INTERNAL/EXTERNAL VOLTAGE REFERENCE TYPICAL CONNECTION DIAGRAM ANALOG INPUT MODES OF OPERATION Normal Mode Power-Down Mode POWER CONSUMPTION Normal Mode Normal and Power-Down Mode Combination SERIAL INTERFACE WITH BUSY INDICATOR WITHOUT BUSY INDICATOR SOFTWARE RESET INTERFACING WITH 8-/16-BIT SPI OUTLINE DIMENSIONS ORDERING GUIDE