Datasheet AD5232 (Analog Devices) - 2

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AD5232 Data Sheet TABLE OF CONTENTS
Features .. 1 Digital Input/Output Configuration.. 14 Applications ... 1 Serial Data Interface ... 15 Functional Block Diagram .. 1 Daisy-Chaining Operation.. 15 General Description ... 1 Advanced Control Modes ... 17 Revision History ... 2 Using Additional Internal, Nonvolatile EEMEM ... 18 Specifications ... 3 Terminal Voltage Operating Range ... 18 Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions .. 3 Detailed Potentiometer Operation .. 18 Interface Timing Characteristics .. 5 Programming the Variable Resistor ... 19 Absolute Maximum Ratings .. 7 Programming the Potentiometer Divider ... 20 Thermal Resistance .. 7 Operation from Dual Supplies ... 20 ESD Caution .. 7 Application Programming Examples .. 20 Pin Configuration and Function Descriptions ... 8 Equipment Customer Start-up Sequence Typical Performance Characteristics ... 9 for a PCB Calibrated Unit with Protected Settings .. 21 Test Circuits ... 12 Flash/EEMEM Reliability .. 21 Theory of Operation .. 14 Evaluation Board .. 21 Scratch Pad and EEMEM Programming... 14 Outline Dimensions ... 22 Basic Operation .. 14 Ordering Guide .. 22 EEMEM Protection .. 14
REVISION HISTORY 11/13—Rev. B to Rev. C
Changes to Applications Section ... 1 Change to Wiper Resistance Parameter, Table 1 ... 3 Changed t16 from 25 ms (max) to 25 ms (typ); Table 2 ... 5 Changes to CS Rise to RDY Fal Time Parameter, Table 2... 5 Changes to Ordering Guide .. 22 Changes to Figure 2 and Figure 3 .. 6
09/11—Rev. A to Rev. B
Changes to Figure 24 .. 12 Change to Resistor Noise Voltage Parameter in Table 1 ... 4 Added Figure 32 ... 13
10/09—Rev. 0 to Rev. A
Changes to Serial Data Interface Section .. 15 Updated Format .. Universal Changes to Programming the Variable Resistor Section .. 19 Changes to Data Sheet Title .. 1 Changes to Ordering Guide .. 22 Changes to Features Section.. 1
10/01—Revision 0: Initial Version
Rev. C | Page 2 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions Interface Timing Characteristics Timing Diagrams Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Theory of Operation Scratch Pad and EEMEM Programming Basic Operation EEMEM Protection Digital Input/Output Configuration Serial Data Interface Daisy-Chaining Operation Advanced Control Modes Increment and Decrement Commands Logarithmic Taper Mode Adjustment Using Additional Internal, Nonvolatile EEMEM Terminal Voltage Operating Range Detailed Potentiometer Operation Programming the Variable Resistor Rheostat Operation Programming the Potentiometer Divider Voltage Output Operation Operation from Dual Supplies Application Programming Examples Equipment Customer Start-up Sequence for a PCB Calibrated Unit with Protected Settings Flash/EEMEM Reliability Evaluation Board Outline Dimensions Ordering Guide