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AMIS-492X0 Datasheet

Fieldbus MAU

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AMIS-492x0
AMIS-492x0 Fieldbus MAU
Overview
AMIS−492x0 Fieldbus MAU (Media Access Unit) is a transceiver
chip for low speed FOUNDATION® Fieldbus and Profibus PA
devices. The AMIS−49200 was originally designed to be a near
pin-for-pin replacement of the Yokogawa mSAA22Q MAU. “Near
pin-for-pin” means that associated component values may change, but
no board changes are required. A micro-leadframe package option
(NQFP) is also available, the AMIS−49250.
Features
AMIS−492x0 Fieldbus MAU is a transceiver IC for low speed
FOUNDATION Fieldbus and Profibus PA devices. It incorporates the
following features:
All Node Power can be Supplied by the Bus, via the AMIS-492x0
Current Consumption 500 mA (Typ)
VCC Voltage: 6.2 V to 4.75 V
VDD Voltage: 5.5 V to 2.7 V
Compatible to IEC 1158−2 and ISA 50.02
Shunt Regulator
Voltage Reference (Internal Only)
Series Regulator
Band-pass Filter
Slew Rate Control
Segment Current Control
Low Voltage Detection
Carrier Detect
Data Rate: 31.25 kbps Voltage Mode
Dual Voltage Supply 3−6.2 V
44-pin LQFP/NQFP Package
These Devices are Pb−Free and are RoHS Compliant
Applications
Process Automation
Pressure and Temperature Monitoring
Definitions, Acronyms and Abbreviations
IC − Integrated Circuit
ESD − Electrostatic Discharge
FF − FOUNDATION Fieldbus
LQFP
− Low Profile Quad Flat Pack
Manchester − Communications Encoding Scheme Implemented in
FOUNDATION Fieldbus
MAU
− Medium Attachment Unit
MDS
− Medium Dependent Sub-layer
NQFP
− “Near Chip-scale” Quad Flat Pack
mSAA22Q − Name of Yokogawa’s MAU IC
www.onsemi.com
LQFP−44, 10x10
CASE 561AA
NQFP 44, 7x7
CASE 560BD
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
August, 2016 − Rev. 8
1
Publication Order Number:
AMIS−492x0/D


  ON Semiconductor Electronic Components Datasheet  

AMIS-492X0 Datasheet

Fieldbus MAU

No Preview Available !

AMIS−492x0
Block Diagram
Receive Block
RXS
35
Zero-cross
Detector
34 RXA
CCD
32
Carrier
Detector
Transmit Block
MDS_CTRL
26
POL
38
TXE
36
TXS
37
MDS
Interface
VSS
1
41 VSS
VSS
42
VSS
43
33
VSS
31 30
FLTOUT FLT
Bandpass Filter
HPF
28
SIGIN
27
LPF
29
Tri-level Modulator
&
Slew Control
VDRV
21
CRT
19
VSS 20
VSS 22
Current
Driver
CCINP
23
CCINM 24
CCOUT 25
39 VSS
VSS
40
VCC
44
VCC
18
VDD
17
Power Supply Block VCC
VCC
Basic
Circuitry
VCC
Bandgap
Vmid
Reference
Vmid
3
Vmid
Vref
2
Vref
VCC
VO
16
SRSET
13
VSS
Series
Regulator
Low Voltage
Detectors
Shunt
Regulator
8
VSS
SRSETIN
11 15 14 12
54
6 7 9 10
Figure 1. AMIS−492x0 Fieldbus MAU Block Diagram
Table 1. PIN NUMBERS AND SIGNAL DESCRIPTION
Signal
Name
Pin
No.
I/O
(Note 1)
Description
VSS
1
Ground
Connect to Ground.
VREF
2
AO Internal bandgap voltage (1.18 V).
VMID
3
AO 2 V bias voltage for AC signals.
N_PFAIL1 4
AI/O
Power fail alarm at VCC input. This pin is an open-drain output of negative logic.
N_PFAIL2 5
AI/O
Power fail alarm at VDD input. This pin is an open-drain output of negative logic.
SHSETIN 6
AI Feedback (non-inverting) input for the shunt regulator.
SHSET
7
AO Divided voltage of VCC input. Feeding this voltage to SHSETIN pin results in 5 V voltage at VCC.
1. AI = Analog Input, AO = Analog Output, AI/O = Analog Input/Output, DIS = CMOS Digital Input (Schmitt Trigger), DO = CMOS Digital
Output.
www.onsemi.com
2


Part Number AMIS-492X0
Description Fieldbus MAU
Maker ON Semiconductor
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