AD2S1205 Просмотр технического описания (PDF) - Analog Devices

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AD2S1205

12-Bit RDC with Reference Oscillator

Analog Devices 

AD2S1205

TABLE OF CONTENTS

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

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

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

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

Product Highlights ........................................................................... 1

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

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

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

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

Pin Configuration and Function Descriptions............................. 6

Resolver Format Signals................................................................... 8

Theory of Operation ........................................................................ 9

Fault Detection Circuit ................................................................ 9

Monitor Signal .............................................................................. 9

Loss of Signal Detection .............................................................. 9

Signal Degradation Detection .................................................. 10

Loss of Position Tracking Detection ........................................ 10

Responding to a Fault Condition ............................................. 10

REVISION HISTORY

5/10—Rev. 0 to Rev. A

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

Changes to Input Bias Current Parameter and Input

Impedance Parameter ...................................................................... 3

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

Changes to Loss of Signal Detection Section................................ 9

Changes to Connecting the Converter Section and Figure 5 ... 11

Change to t6 Max Value in Table 6 ............................................... 13

Changes to t9 and t10 Max Values Table 7 .................................... 15

Changes to Ordering Guide .......................................................... 20

Added Automotive Products Section .......................................... 20

1/07—Revision 0: Initial Version

False Null Condition.................................................................. 10

On-Board Programmable Sinusoidal Oscillator .................... 11

Synthetic Reference Generation ............................................... 11

Charge-Pump Output ................................................................ 11

Connecting the Converter ........................................................ 11

Clock Requirements................................................................... 12

Absolute Position and Velocity Output ................................... 12

Parallel Interface ......................................................................... 12

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

Incremental Encoder Outputs .................................................. 16

Supply Sequencing and Reset ................................................... 16

Circuit Dynamics ........................................................................... 17

Loop Response Model ............................................................... 17

Sources of Error.......................................................................... 18

Connecting to the DSP .............................................................. 19

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

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

Automotive Products ................................................................. 20

Rev. A | Page 2 of 20

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