Table Of Contents; Change To Specifications - Analog Devices AD5235 Manual

AD5235

TABLE OF CONTENTS

Specifications..................................................................................... 3
Electrical Characteristics-25 kΩ, 250 kΩ Versions................ 3
Interface Timing Characteristics-25 kΩ, 250 kΩ Versions... 5
Timing Diagrams.......................................................................... 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Test Circuits................................................................................. 12
Theory of Operation ...................................................................... 14
Scratchpad and EEMEM Programming.................................. 14
Basic Operation .......................................................................... 14
EEMEM Protection.................................................................... 15
Digital Input/Output Configuration........................................ 15
Serial Data Interface................................................................... 15
Daisy-Chain Operation ............................................................. 15
Terminal Voltage Operating Range.......................................... 16
Advanced Control Modes ......................................................... 18
RDAC Structure.......................................................................... 19
Programming the Variable Resistor ......................................... 20
Programming the Potentiometer Divider ............................... 20
Programming Examples ............................................................ 21
REVISION HISTORY
7/04-Data Sheet Changed from REV. A to REV. B
Updated Formatting ........................................................... Universal
Edits to Features, General Description, and Block Diagram .......1
Changes to Specifications .................................................................3
Replaced Timing Diagrams..............................................................6
Changes to Absolute Maximum Ratings ........................................7
Changes to Pin Function Descriptions...........................................8
Changes to Typical Performance Characteristics..........................9
Additional Test Circuit (Figure 36) .................................................9
AD5235EVAL Evaluation Kit ................................................... 21
Applications..................................................................................... 22
Bipolar Operation from Dual Supplies.................................... 22
Gain Control Compensation .................................................... 22
High Voltage Operation............................................................. 22
DAC.............................................................................................. 22
Bipolar Programmable Gain Amplifier................................... 23
10-Bit Bipolar DAC.................................................................... 23
Programmable Voltage Source with Boosted Output............ 23
Programmable Current Source ................................................ 24
Programmable Bidirectional Current Source......................... 24
Programmable Low-Pass Filter ................................................ 24
Programmable Oscillator .......................................................... 25
Optical Transmitter Calibration with ADN2841 ................... 25
Resistance Scaling ...................................................................... 26
Resistance Tolerance, Drift, and Temperature Coefficient
Mismatch Considerations ......................................................... 26
RDAC Circuit Simulation Model ............................................. 27
Outline Dimensions ....................................................................... 28
Ordering Guide .......................................................................... 28
Edits to Theory of Operation.........................................................14
Edits to Applications .......................................................................23
Updated Outline Dimensions........................................................27
8/02-Data Sheet Changed from REV. 0 to REV. A
Change to Features and General Description................................1
Change to Specifications ..................................................................2
Change to Calculating Actual End-to-End Terminal
Resistance Section ..........................................................................14
Rev.B | Page 2 of 28