Datasheet AD7763 (Analog Devices) - 3

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AD7763 Data Sheet TABLE OF CONTENTS
Features .. 1 Example 2 .. 19 Applications ... 1 Driving the AD7763 ... 20 Functional Block Diagram .. 1 Using the AD7763 .. 21 General Description ... 1 Bias Resistor Selection ... 21 Revision History ... 2 Decoupling and Layout Recommendations.. 22 Specifications ... 3 Supply Decoupling ... 23 Timing Specifications ... 5 Additional Decoupling .. 23 Timing Diagrams .. 6 Reference Voltage Filtering ... 23 Absolute Maximum Ratings .. 7 Differential Amplifier Components .. 23 ESD Caution .. 7 Exposed Paddle ... 23 Pin Configuration and Function Descriptions ... 8 Layout Considerations ... 23 Terminology .. 10 Programmable FIR Filter ... 24 Typical Performance Characteristics ... 11 Downloading a User-Defined Filter .. 25 Theory of Operation .. 14 Example Filter Download ... 26 AD7763 Interface .. 15 Registers ... 27 Reading Data Using the SPI Interface ... 15 Control Register 1—Address 0x001 ... 27 Synchronization .. 15 Control Register 2—Address 0x002 ... 27 Sharing the Serial Bus .. 15 Status Register (Read Only) .. 28 Writing to the AD7763 .. 16 Offset Register—Address 0x003 ... 28 Reading Status and Other Registers ... 17 Gain Register—Address 0x004 ... 28 Reading Data Using the I2S Interface ... 18 Overrange Register—Address 0x005 ... 28 Clocking the AD7763 ... 19 Outline Dimensions ... 29 Example 1 .. 19 Ordering Guide .. 29
REVISION HISTORY 1/14—Rev. A to Rev. B 11/09—Rev. 0 to Rev. A
Added Exposed Pad Notation, Figure 4 and Table 5 ... 8 Changes to Figure 5 ... 8 Change to Figure 37 ... 24 Changes to Sharing the Serial Bus Section ... 15 Updated Outline Dimensions ... 29 Changes to Figure 26 .. 16 Updated Outline Dimensions ... 29 Changes to Ordering Guide .. 29
10/05—Revision 0: Initial Version
Rev. B | Page 2 of 32 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation AD7763 Interface Reading Data Using the SPI Interface Synchronization Sharing the Serial Bus Writing to the AD7763 Reading Status and Other Registers Reading Data Using the I2S Interface Clocking the AD7763 Example 1 Example 2 Driving the AD7763 Using the AD7763 Bias Resistor Selection Decoupling and Layout Recommendations Supply Decoupling Additional Decoupling Reference Voltage Filtering Differential Amplifier Components Exposed Paddle Layout Considerations Programmable FIR Filter Downloading a User-Defined Filter Example Filter Download Registers Control Register 1—Address 0x001 Default Value 0x001A Control Register 2—Address 0x002 Default Value 0x009B Status Register (Read Only) Offset Register—Address 0x003 Non Bit-Mapped, Default Value 0x0000 Gain Register—Address 0x004 Non Bit-Mapped, Default Value 0xA000 Overrange Register—Address 0x005 Non Bit-Mapped, Default Value 0xCCCC Outline Dimensions Ordering Guide