AD73360 Analog Devices, AD73360 Datasheet - Page 34

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AD73360

Manufacturer Part Number
AD73360
Description
6-Channel AFE Processor for General Purpose Applications Including Industrial Power Metering or Multi-Channel Analog Inputs
Manufacturer
Analog Devices
Datasheet

Specifications of AD73360

Resolution (bits)
16bit
# Chan
6
Sample Rate
2.05MSPS
Interface
Ser
Analog Input Type
Diff-Uni,SE-Uni
Ain Range
1.6 V p-p,3.2 V p-p
Adc Architecture
Sigma-Delta
Pkg Type
QFP,SOIC

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AD73360
Topic
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FUNCTIONAL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . 1
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 1
SPECIFICATIONS (3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATIONS (5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TIMING CHARACTERISTICS (3 V) . . . . . . . . . . . . . . . . . 6
TIMING CHARACTERISTICS (5 V) . . . . . . . . . . . . . . . . . 6
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . 8
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PIN CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PIN FUNCTION DESCRIPTION . . . . . . . . . . . . . . . . . . . 9
TERMINOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . 11
REGISTER BIT DESCRIPTIONS . . . . . . . . . . . . . . . . . . 17
Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Performance Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Encoder Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Signal Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Programmable Gain Amplifier . . . . . . . . . . . . . . . . . . . . . 11
ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Analog Sigma-Delta Modulator . . . . . . . . . . . . . . . . . . . . 11
Decimation Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ADC Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial Port (SPORT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SPORT Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SPORT Register Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Control Register Tables . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Master Clock Divider . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Serial Clock Rate Divider . . . . . . . . . . . . . . . . . . . . . . . . . 19
Decimation Rate Divider . . . . . . . . . . . . . . . . . . . . . . . . . 19
TABLE OF CONTENTS
Page
–34–
Topic
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
INTERFACING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
DESIGN CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . 25
APPLICATION EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . 27
APPENDIX A (Single Device Data Mode Operation) . . . . 28
APPENDIX B (Single Device Mixed Mode Operation) . . . . . 29
APPENDIX C (Two Devices in Data Mode Operation) . . . . 30
APPENDIX D (Two Devices in Mixed Mode Operation) . . . 32
OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . 35
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Resetting the AD73360 . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Program (Control) Mode . . . . . . . . . . . . . . . . . . . . . . . . . 20
Data Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mixed Program/Data Mode . . . . . . . . . . . . . . . . . . . . . . . 20
Digital Interfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cascade Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Encoder Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Encoder Group Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Grounding and Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
DSP Programming Considerations . . . . . . . . . . . . . . . . . 26
DSP SPORT Configuration . . . . . . . . . . . . . . . . . . . . . . . 26
DSP SPORT Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Vector Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Industrial Power Metering . . . . . . . . . . . . . . . . . . . . . . . . 27
REV. A
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