Datasheet

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AD5235 Data Sheet

Rev. F | Page 2 of 32

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 3

Specifications ..................................................................................... 4

Electrical Characteristics—25 kΩ, 250 kΩ Versions ............... 4

Interface Timing and EEMEM Reliability Characteristics—

25 kΩ, 250 kΩ Versions ............................................................... 6

Absolute Maximum Ratings ............................................................ 8

ESD Caution .................................................................................. 8

Pin Configuration and Function Descriptions ............................. 9

Typical Performance Characteristics ........................................... 10

Test Circuits ................................................................................. 14

Theory of Operation ...................................................................... 16

Scratchpad and EEMEM Programming .................................. 16

Basic Operation .......................................................................... 16

EEMEM Protection .................................................................... 17

Digital Input and Output Configuration................................. 17

Serial Data Interface ................................................................... 17

Daisy-Chain Operation ............................................................. 18

Terminal Voltage Operating Range .......................................... 18

Advanced Control Modes ......................................................... 20

RDAC Structure .......................................................................... 21

Programming the Variable Resistor ......................................... 22

Programming the Potentiometer Divider ............................... 22

Programming Examples ............................................................ 23

EVAL-AD5235SDZ Evaluation Kit .......................................... 23

Applications Information .............................................................. 24

Bipolar Operation from Dual Supplies.................................... 24

Gain Control Compensation .................................................... 24

High Voltage Operation ............................................................ 24

DAC .............................................................................................. 24

Bipolar Programmable Gain Amplifier ................................... 25

10-Bit Bipolar DAC .................................................................... 25

Programmable Voltage Source with Boosted Output ........... 25

Programmable Current Source ................................................ 26

Programmable Bidirectional Current Source ......................... 26

Programmable Low-Pass Filter ................................................ 27

Programmable Oscillator .......................................................... 27

Optical Transmitter Calibration with ADN2841 ................... 28

Resistance Scaling ...................................................................... 28

Resistance Tolerance, Drift, and Temperature Coefficient

Mismatch Considerations ......................................................... 29

RDAC Circuit Simulation Model ............................................. 29

Outline Dimensions ....................................................................... 30

Ordering Guide .......................................................................... 30