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 4 link to page 6 link to page 7 link to page 7 link to page 8 link to page 10 link to page 11 link to page 11 link to page 11 link to page 11 link to page 11 link to page 11 link to page 12 link to page 12 link to page 14 link to page 17 link to page 17 link to page 17 link to page 17 link to page 19 link to page 19 link to page 19 link to page 19 link to page 19 link to page 19 link to page 20 link to page 21 link to page 22 AD7416/AD7417/AD7418Data SheetTABLE OF CONTENTS Features .. 1 On-Chip Reference .. 11 Applications ... 1 Temperature Measurement ... 12 General Description ... 1 Internal Register Structure .. 12 Functional Block Diagrams ... 1 Serial Bus Interface... 14 Revision History ... 2 OTI Output ... 17 Product Highlights ... 3 Fault Queue ... 17 Specifications ... 4 Power-On Defaults ... 17 AD7417/AD7418 Specifications... 4 Operating Modes .. 17 AD7416 Specifications ... 6 CONVST Start Mode ... 18 Absolute Maximum Ratings .. 7 Applications Information .. 19 ESD Caution .. 7 Supply Decoupling ... 19 Pin Configurations and Function Descriptions ... 8 Power-On Reset .. 19 Terminology .. 10 Mounting the AD7416/AD7417/AD7418 .. 19 Theory of Operation .. 11 Fan Controller ... 19 Circuit Information .. 11 Thermostat .. 19 Converter Details.. 11 System with Multiple AD7416 Devices ... 20 Typical Connection Diagram.. 11 Outline Dimensions ... 21 Analog Inputs .. 11 Ordering Guide .. 22 REVISION HISTORY 4/2018—Rev. I to Rev. J Updated Outline Dimensions ... 21 Changes to Product Title ... 1 Changes to Ordering Guide .. 23 Changes to Ordering Guide .. 22 8/2004—Rev. F to Rev. G11/2010—Rev. H to Rev. I Changes to Figure 12 .. 12 Changes to Figure 19 .. 16 Changes to Reading Data from the AD7416/AD7417/AD7418 Section .. 13 2/2009—Rev. G to Rev. H Changes to Power-On-Reset section ... 14 Updated Format .. Universal Changes to Data Sheet Title, Figure 2 and Figure 3 ... 1 7/2003—Rev. E to Rev. F Moved Product Highlights Section .. 3 Changes to Features Section .. 1 Changes to Table 1 .. 4 Changes to Specifications Section ... 3 Changes to Endnote 1, Table 2 .. 6 Changes to Absolute Maximum Ratings Section .. 6 Added Figure 5 Caption... 7 Changes to Ordering Guide Section ... 6 Changes to Table 4 .. 8 Changes to Product Highlights Section ... 7 Changes to Table 5 and Table 6 ... 9 Changes to Circuit Information Section .. 7 Changes to On-Chip Reference Section .. 11 Changes to Temperature Measurement Section.. 9 Changes to Figure 13 .. 12 Changes to Table 8 and Table 10 ... 13 10/2002—Rev. D to Rev. E Changes to Figure 15, Figure 16, and Figure 17 ... 15 Changes to Specifications Headings ... 2 Changes to Reading Data from the AD7416/AD7417/AD7418 Added Temperature Measurement Section ... 8 Section, Figure 18, and Figure 19 ... 16 Changes to Serial Bus Address Section ... 10 Change to Mode 1 .. 17 Changes to Figure 11 .. 12 Changes to Figure 22 Caption and CONVST Pin Mode Changes to CONVST Pin Mode Section ... 14 Section .. 18 Changes to Power-On-Reset Section ... 14 Moved Figure 21 and Figure 22 .. 18 Inserted Figure 16 and Figure 17; Renumbered Sequential y .. 15 Changes to Power-On Reset Section .. 19 Updated Outline Dimensions ... 16 Rev. J | Page 2 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS TABLE OF CONTENTS REVISION HISTORY PRODUCT HIGHLIGHTS SPECIFICATIONS AD7417/AD7418 SPECIFICATIONS AD7416 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS TYPICAL CONNECTION DIAGRAM ANALOG INPUTS ON-CHIP REFERENCE TEMPERATURE MEASUREMENT INTERNAL REGISTER STRUCTURE Address Pointer Register Temperature Value Register (Address 0x00) Configuration Register (Address 0x01) THYST Setpoint Register (Address 0x02) TOTI Setpoint Register (Address 0x03) ADC Value Register (Address 0x04) ADC Transfer Function Config2 Register (Address 0x05) SERIAL BUS INTERFACE Serial Bus Address Writing to the AD7416/AD7417/AD7418 Reading Data From the AD7416/AD7417/AD7418 OTI OUTPUT FAULT QUEUE POWER-ON DEFAULTS OPERATING MODES Mode 1 Mode 2 CONVSTB START MODE CONVSTB Pin Mode APPLICATIONS INFORMATION SUPPLY DECOUPLING POWER-ON RESET MOUNTING THE AD7416/AD7417/AD7418 FAN CONTROLLER THERMOSTAT SYSTEM WITH MULTIPLE AD7416 DEVICES OUTLINE DIMENSIONS ORDERING GUIDE
