EVAL-ADN2850SDZ データシートの表示（PDF） - Analog Devices

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EVAL-ADN2850SDZ

Nonvolatile Memory, Dual 1024-Position Digital Resistor

Analog Devices 

ADN2850

TABLE OF CONTENTS

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

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

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

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

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Electrical Characteristics—25 kΩ, 250 kΩ Versions ............... 3

Interface Timing and EEMEM Reliability Characteristics—

25 kΩ, 250 kΩ Versions ............................................................... 5

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

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

Test Circuits................................................................................. 12

Theory of Operation ...................................................................... 13

Scratchpad and EEMEM Programming.................................. 13

Basic Operation .......................................................................... 13

EEMEM Protection .................................................................... 14

Digital Input and Output Configuration................................. 14

Serial Data Interface................................................................... 14

REVISION HISTORY

6/12—Rev. D to Rev. E

Changes to Table 1 Conditions ....................................................... 4

Removed Positive Supply Current RDY and/or SDO Floating

Parameters and Negative Supply Current RDY and/or SDO

Floating Parameters, Table 1 ........................................................... 4

Updated Outline Dimensions ....................................................... 25

Added Endnote 2 to Ordering Guide .......................................... 25

4/11—Rev. C to Rev. D

Changes to Figure 10...................................................................... 10

4/11—Rev. B to Rev. C

Updated Format..................................................................Universal

Changes to EEMEM Performance ...................................Universal

Changes to Features Section............................................................ 1

Changes to Applications Section .................................................... 1

Changes to General Description Section ...................................... 1

Changes to Figure 1 .......................................................................... 1

Changes to Specifications Section .................................................. 3

Changes to Table 2............................................................................ 5

Changes to Absolute Maximum Ratings Section ......................... 7

Changes to Pin Configuration and Function Descriptions

Section................................................................................................ 8

Data Sheet

Daisy-Chain Operation ............................................................. 14

Terminal Voltage Operating Range ......................................... 15

Advanced Control Modes ......................................................... 17

RDAC Structure.......................................................................... 18

Programming the Variable Resistor......................................... 19

Programming Examples ............................................................ 19

EVAL-ADN2850SDZ Evaluation Kit....................................... 20

Applications Information .............................................................. 21

Gain Control Compensation .................................................... 21

Programmable Low-Pass Filter ................................................ 21

Programmable Oscillator .......................................................... 21

Optical Transmitter Calibration with ADN2841 ................... 22

Incoming Optical Power Monitoring ...................................... 22

Resistance Scaling ...................................................................... 23

Resistance Tolerance, Drift, and Temperature Coefficient

Mismatch Considerations ......................................................... 24

RDAC Circuit Simulation Model ............................................. 24

Outline Dimensions ....................................................................... 25

Ordering Guide .......................................................................... 25

Changes to Typical Performance Characteristics Section ........ 10

Added Figure 15, Figure 16, Figure 17 ........................................ 11

Changes to Figure 21...................................................................... 12

Changes to Theory of Operation Section.................................... 13

Changes to Figure 25...................................................................... 14

Changes to Programming Variable Resister Section ................. 19

Changes to Table 13 ....................................................................... 19

Changes to EVAL-ADN2850EBZ Evaluation Kit Section ........ 20

Added Gain Control Compensation Section.............................. 21

Added Programmable Low-Pass Filter Section.......................... 21

Added Programmable Oscillator Section.................................... 21

Added Resistance Tolerance, Drift, and Temperature Coeffcient

Mistmatch Considerations Section .............................................. 24

Changes to Outline Dimensions Section .................................... 25

Changes to Ordering Guide .......................................................... 25

9/02—Rev. A to Rev. B

Changes to General Description .....................................................1

Changes to Electrical Characteristics .............................................2

Changes to Calculating Actual Full-Scale Resistance Section.....9

Changes to Table VI ..........................................................................9

Updated Outline Dimensions ....................................................... 18

Rev. E | Page 2 of 28

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