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AMI SEMICONDUCTOR

AMIS-49200 Datasheet Preview

AMIS-49200 Datasheet

Fieldbus MAU Chip

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AMIS-49200 Fieldbus MAU
AMIS-49200
Fieldbus MAU Chip
Data Sheet
www.DataSheet4U.com
AMI Semiconductor – Jan. 07, M-20532-003
www.amis.com
1




AMI SEMICONDUCTOR

AMIS-49200 Datasheet Preview

AMIS-49200 Datasheet

Fieldbus MAU Chip

No Preview Available !

AMIS-49200 Fieldbus MAU
Data Sheet
Table of Contents
1.0 Introduction........................................................................................................................................................................................... 3
1.1 Overview........................................................................................................................................................................................... 3
1.2 Definitions, Acronyms and Abbreviations.......................................................................................................................................... 3
1.3 References ....................................................................................................................................................................................... 3
2.0 AMIS-49200 Fieldbus MAU Description ............................................................................................................................................... 3
2.1 Features............................................................................................................................................................................................ 3
2.2 Block Diagram .................................................................................................................................................................................. 4
2.3 Package Information ......................................................................................................................................................................... 5
3.0 Electrical Characteristics ...................................................................................................................................................................... 8
3.1 Operating Conditions ........................................................................................................................................................................ 8
3.2 Power Supply Blocks ........................................................................................................................................................................ 9
3.3 Transmitter Blocks ............................................................................................................................................................................ 9
3.4 Receiver Block ................................................................................................................................................................................ 11
4.0 Theory of Operation ........................................................................................................................................................................... 12
4.1 Overview......................................................................................................................................................................................... 12
4.2 Power Supply Block ........................................................................................................................................................................ 12
4.2.1. Shunt Regulator ...................................................................................................................................................................... 12
4.2.2. Series Regulator...................................................................................................................................................................... 13
4.2.3. Low Voltage Detectors ............................................................................................................................................................ 13
4.2.4. Voltage Reference................................................................................................................................................................... 14
4.3 Transmit Block ................................................................................................................................................................................ 15
4.3.1. MDS-interface ......................................................................................................................................................................... 15
4.3.2. Tri-level Modulator................................................................................................................................................................... 15
4.3.3. Slew Rate Controller ............................................................................................................................................................... 16
4.3.4. Current Drive Amplifier ............................................................................................................................................................ 16
4.4 Receive Block ................................................................................................................................................................................. 16
4.4.1. Band Pass Filter ...................................................................................................................................................................... 17
4.4.2. Receive Signal Detection ........................................................................................................................................................ 17
5.0 AMIS-49200 as Replacement for Yokogawa µSAA22Q..................................................................................................................... 18
5.1 Functional Differences Between the µSAA22Q and the AMIS-49200............................................................................................. 18
5.1.1. Jabber Inhibit........................................................................................................................................................................... 18
5.1.2. Low Power Mode..................................................................................................................................................................... 18
5.2 Pin Differences Between the µSAA22Q and the AMIS-49200 ........................................................................................................ 19
5.3 External Circuitry............................................................................................................................................................................. 20
www55.D..54atAAaSlctethiverneeat4CtUivo.emcoDpmoenseignntss..................................................................................................................................................................................................................................................................................................................................................
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21
5.6 Verification ...................................................................................................................................................................................... 21
6.0 Appendix (A) – Manchester Encoding ................................................................................................................................................ 22
7.0 Company or Product Inquiries ............................................................................................................................................................ 22
AMI Semiconductor – Jan. 07, M-20532-003
www.amis.com
2


Part Number AMIS-49200
Description Fieldbus MAU Chip
Maker AMI SEMICONDUCTOR
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AMIS-49200 Datasheet PDF






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