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