19699-002-XTP ON Semiconductor, 19699-002-XTP Datasheet

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19699-002-XTP

Manufacturer Part Number
19699-002-XTP
Description
Manufacturer
ON Semiconductor
Datasheet

Specifications of 19699-002-XTP

Number Of Transmitters
1
Power Supply Requirement
Dual
Package Type
LQFP
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Lead Free Status / RoHS Status
Compliant
1.0 Introduction
1.1 Overview
AMIS-49200 Fieldbus MAU (media access unit) is a transceiver chip for low speed FOUNDATION Fieldbus® and Profibus® PA
devices. It was designed to be a near pin-for-pin replacement of the Yokogawa μSAA22Q MAU. “Near pin-for-pin” means that
associated component values may change, but no board changes are required.
1.2 Definitions, Acronyms and Abbreviations
IC
ESD
FF
LQFP
Manchester
MAU
MDS
μSAA22Q
1.3 References
• Fieldbus Medium Attachment Unit (MAU) Chip, μSAA22Q, Yokogawa Electric Corporation, June 12, 1998, Document No.: SS-96-01
• Fieldbus Standard for Use in Industrial Control Systems Part 2: Physical Layer Specification and Service Definition, Amendment to
• Profibus PA specifications EN 50170 (formerly DIN 19245) covers all of Profibus and includes PA (31.25 kbps Intrinsically Safe
©2008 SCILLC. All rights reserved.
May 2008 – Rev. 5
(Rev.3).
Clause 22 ISA/SP50 –1996-544B, dS50.02, Part 2, Draft Standard.
Physical Layer), references IEC 61158-2.
- Integrated circuit
- Electrostatic discharge
- FOUNDATION Fieldbus
- Low profile quad flat pack
- Communications encoding scheme implemented in FOUNDATION Fieldbus
- Medium attachment unit
- Medium dependent sub-layer
- Name of Yokogawa’s MAU IC
AMIS-49200
Publication Order Number:
Fieldbus MAU
AMIS49200/D

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19699-002-XTP Summary of contents

Page 1

Introduction 1.1 Overview AMIS-49200 Fieldbus MAU (media access unit transceiver chip for low speed FOUNDATION Fieldbus® and Profibus® PA devices. It was designed near pin-for-pin replacement of the Yokogawa μSAA22Q MAU. “Near pin-for-pin” means ...

Page 2

AMIS-49200 2.0 AMIS-49200 Fieldbus MAU Description 2.1 Features AMIS-49200 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 ...

Page 3

AMIS-49200 VSS Receive Block RXS Zero-Cross Detector RXA Carrier Detector CCD Transmit Block MDS_CTRL POL MDS Interface TXE TXS VSS VSS ...

Page 4

AMIS-49200 2.3 Package Information The IC is packaged in a 44-pin LQFP package as shown below. Figure 2: Package Dimensions (44-pin LQFP) Rev Page www.onsemi.com ...

Page 5

AMIS-49200 RxA 35 RxS 36 TxE 37 TxS AMIS-49200 POL 38 Fieldbus MAU VSS 39 44 pin LQFP VSS 40 VSS 41 VSS 42 VSS 43 VCC 44 ...

Page 6

AMIS-49200 Table 1: Pin Numbers and Signal Description Signal Name Pin No. I/O (Note 1) VSS 1 Ground VREF 2 AO VMID 3 AO N_PFAIL1 4 AI/O N_PFAIL2 5 AI/O SHSETIN 6 AI SHSET 7 AO SHUNT 8 AI VSS/ ...

Page 7

AMIS-49200 Table 1: Pin Numbers and Signal Description (Continued) Signal Name Pin No. I/O(Note 1) RXA 34 DO RXS 35 DO TXE 36 DIS TXS 37 DIS POL 38 DIS VSS 39 Ground VSS 40 Ground VSS 41 Ground VSS ...

Page 8

AMIS-49200 Table 4: CMOS Input Specifications Parameter Input high voltage Input low voltage Input high current Input low current Schmitt negative threshold Schmitt positive threshold Schmitt hysteresis 3.2 Power Supply Blocks Table 5: Regulator Specifications Parameter Shunt Regulator Output voltage ...

Page 9

AMIS-49200 3.3 Transmitter Blocks Table 7: MDS-MAU Interface Parameter MDS-MAU Interface POL input pin TxE input pin TxS input pin Note: The associated MDS chip must handle the jabber detect function. Table 8: Tri-level Modulator Parameter Symbol Tri-level Modulator and ...

Page 10

AMIS-49200 3.4 Receiver Block Table 10: Receiver Sub-blocks Parameter Symbol Band Pass Filter Input voltage V BP Output voltage swing FLTOUT Output slew rate SR Input offset voltage V OS RF1 RF2 (1) Filter resistors RF3 RF4 Carrier Detector V ...

Page 11

AMIS-49200 4.0 Theory of Operation 4.1 Overview The AMIS-49200 incorporates two different power supply circuits. configuration, the shunt regulator is set for 5V and the series regulator is set for 3V. Users can modify either power supply by adding external ...

Page 12

AMIS-49200 The SHUNT pin is normally connected to V Its value should be small enough to keep V than 100Ω.). Since the internal transistor can sink as much as 25mA, no additional circuit is necessary in most cases. Note that ...

Page 13

AMIS-49200 If you do not use one of the regulators, the corresponding alarm signal can potentially be used to monitor another signal. For example, if the series regulator is not used, SRAO should be left open, SRTR tied to VCC, ...

Page 14

AMIS-49200 4.3 Transmit Block The transmit block contains four sub-blocks: 1. MDS-interface – decodes input signals to generate internal control signals. 2. Tri-level modulator – generates current signals used as inputs to the slew-rate controller. 3. Slew rate controller – ...

Page 15

AMIS-49200 N_VL N_Vs 4.3.3. Slew Rate Controller Amplifier (A3), shown in the above figure, controls the slew rate. The amplifier converts the current signals from the tri-level modulator to a voltage signal, VDRV. It controls its slew rate with a ...

Page 16

AMIS-49200 Vmid 4.4 Receive Block The receive block contains three sub-blocks, which are internally connected band pass filter – to filter the desired incoming communication signal. 2. Carrier detector – generates the RxA signal ...

Page 17

AMIS-49200 31 To Detectors 4.4.2. Receive Signal Detection The carrier detector generates the receive activity (RxA) signal by detecting the input signal amplitude. Minimum amplitude is 100mVp- p (TYP). A delay, determined by the capacitor connected between the CCD pin ...

Page 18

AMIS-49200 5.0 AMIS-49200 as Replacement for Yokogawa μSAA22Q The AMIS-49200 is a near pin-for-pin compatible replacement for the Yokogawa μSAA22Q Fieldbus MAU. There are some differences between the two chips both in the internal operation, the required external connections and ...

Page 19

AMIS-49200 5.3 External Circuitry Figure 13 shows the external circuitry required to connect the AMIS-49200 to an IEC 61158-2 conformant network. This schematic is the circuit that was used to pass the FOUNDATION Fieldbus Physical Layer Conformance test as specified ...

Page 20

AMIS-49200 noise as possible used as a reference for many sub-circuits in the AMIS-49200. C8 must be a large capacitor with maximum of 100nf. C8 recommended value is 1μf. There is one other minor difference in the ...

Page 21

AMIS-49200 6.0 Ordering Information Part Number Package AMIS-49200-XTD 44 LQFP 10x10mm (Green/RoHS Compliant) AMIS-49200-XTP 44 LQFP 10x10mm (Green/RoHS Compliant) 7.0 Appendix (A) – Manchester Encoding All Fieldbus devices transmit the data onto the media as a Manchester-encoded baseband signal. With ...

Page 22

... SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-3 ...

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