Datasheet AD5235 (Analog Devices) - 2

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AD5235 Data Sheet TABLE OF CONTENTS
Features .. 1 Programming the Variable Resistor ... 22 Applications ... 1 Programming the Potentiometer Divider ... 22 General Description ... 1 Programming Examples .. 23 Functional Block Diagram .. 1 EVAL-AD5235SDZ Evaluation Kit .. 23 Revision History ... 3 Applications Information .. 24 Specifications ... 4 Bipolar Operation from Dual Supplies.. 24 Electrical Characteristics—25 kΩ, 250 kΩ Versions ... 4 Gain Control Compensation .. 24 Interface Timing and EEMEM Reliability Characteristics— High Voltage Operation .. 24 25 kΩ, 250 kΩ Versions ... 6 DAC .. 24 Absolute Maximum Ratings .. 8 Bipolar Programmable Gain Amplifier ... 25 ESD Caution .. 8 10-Bit Bipolar DAC .. 25 Pin Configuration and Function Descriptions ... 9 Programmable Voltage Source with Boosted Output ... 25 Typical Performance Characteristics ... 10 Programmable Current Source .. 26 Test Circuits ... 14 Programmable Bidirectional Current Source ... 26 Theory of Operation .. 16 Programmable Low-Pass Filter .. 27 Scratchpad and EEMEM Programming .. 16 Programmable Oscillator .. 27 Basic Operation .. 16 Optical Transmitter Calibration with ADN2841 ... 28 EEMEM Protection .. 17 Resistance Scaling .. 28 Digital Input and Output Configuration... 17 Resistance Tolerance, Drift, and Temperature Coefficient Serial Data Interface ... 17 Mismatch Considerations ... 29 Daisy-Chain Operation ... 18 RDAC Circuit Simulation Model ... 29 Terminal Voltage Operating Range .. 18 Outline Dimensions ... 30 Advanced Control Modes ... 20 Ordering Guide .. 30 RDAC Structure .. 21 Rev. F | Page 2 of 32 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Electrical Characteristics—25 kΩ, 250 kΩ Versions Interface Timing and EEMEM Reliability Characteristics—25 kΩ, 250 kΩ Versions Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Theory of Operation Scratchpad and EEMEM Programming Basic Operation EEMEM Protection Digital Input and Output Configuration Serial Data Interface Daisy-Chain Operation Terminal Voltage Operating Range Power-Up Sequence Layout and Power Supply Bypassing Advanced Control Modes Linear Increment and Decrement Instructions Logarithmic Taper Mode Adjustment Using to Re-Execute a Previous Command Using Additional Internal Nonvolatile EEMEM Calculating Actual End-to-End Terminal Resistance RDAC Structure Programming the Variable Resistor Rheostat Operation Programming the Potentiometer Divider Voltage Output Operation Programming Examples EVAL-AD5235SDZ Evaluation Kit Applications Information Bipolar Operation from Dual Supplies Gain Control Compensation High Voltage Operation DAC Bipolar Programmable Gain Amplifier 10-Bit Bipolar DAC Programmable Voltage Source with Boosted Output Programmable Current Source Programmable Bidirectional Current Source Programmable Low-Pass Filter Programmable Oscillator Optical Transmitter Calibration with ADN2841 Resistance Scaling Resistance Tolerance, Drift, and Temperature Coefficient Mismatch Considerations RDAC Circuit Simulation Model Outline Dimensions Ordering Guide