AD5171

TABLE OF CONTENTS

AD5171—Electrical Characteristics .............................................. 3

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Functional Descriptions.......................... 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ...................................................................... 11

One-Time Programming (OTP) .............................................. 11

Determining the Variable Resistance and Voltage ................. 11

Rheostat Mode Operation..................................................... 11

Potentiometer Mode Operation ........................................... 12

ESD Protection ........................................................................... 12

Terminal Voltage Operating Range.......................................... 13

Power-Up/Power-Down Sequences......................................... 13

Power Supply Considerations ................................................... 13

Controlling the AD5171 ............................................................ 14

Software Programming ......................................................... 14

I2C Controller Programming................................................ 15

Controlling Two Devices on One Bus ..................................... 16

Applications..................................................................................... 17

Programmable Voltage Reference (DAC) ............................... 17

Gain Control Compensation .................................................... 17

Programmable Voltage Source with Boosted Output............ 17

Level Shifting for Different Voltage Operation ...................... 17

Resistance Scaling ...................................................................... 17

Resolution Enhancement .......................................................... 18

RDAC Circuit Simulation Model ............................................. 18

AD5171 Evaluation Board ........................................................ 19

Outline Dimensions ....................................................................... 20

Ordering Guide .......................................................................... 20

REVISION HISTORY

Revision 0: Initial Version

Rev. PrC | Page 2 of 20

Preliminary Technical Data