ETC A2SI-MT

A²SI
Advanced AS-Interface IC
Description
A²SI is a monolithic CMOS integrated circuit certified for AS-i (Actuator Sensor-interface) networks. AS-i
networks are intended for industrial automation.
The main advantage of AS-i solutions is that actuators and sensors are connected using a two-wire unshielded
cable that is easy to install. This cable transports both power and information/data.
AS-i network communication is based on the master-slave principle. The network can be extended (to cable
lengths greater than 100m) by using the A²SI in the repeater mode configuration. A²SI is furthermore used as
slave interface to sensors / actuators and as master interface.
AS-i is a standard for the automation industry based on IEC 62026-2 and EN 50295.
The device is available in a 28-pin SSOP (5,3 mm) package.
Features
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AS-i Complete Specification V2.11 compliant
Integrated EEPROM
Additional addressing channel using an opto-electronic interface
Extended address mode operation as programmable option (up to 62 slaves)
High impedance AS-i line input, additional pins for further impedance optimizations
DC voltage output, approximately 24 volts, not stabilized
5 volt DC voltage output, stabilized, CMOS logic can be supplied directly (e.g. µC)
LED status indicator output (compliant with the standard indication recommendation)
Integrated watchdog
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Temperature range -25°C to + 85°C
Block Diagram
2.2 mF
5V
24V
8 MHz
10 mF
U IN
CAP
RCAP
ASI+
ASI–
A2SI
U OUT
U5R
ELECTRONIC
INDUCTOR
U5RD
POWER
SUPPLY
OSC1/2
OSCILLATOR
CCAP
POWERFAIL
DETECTION
4
RECEIVE
4
ASIP
DIGITAL
LOGIC
DOx
DIx
DSR
ASIN
PST
4
TRANSMIT
THERMAL
PROTECTION
GND2
0V
Feature Sheet, Rev.1.0, April 10, 2002
GND1
GND
Px
IRD
AMP
IRD
LED
FID
© ZMD AG
A²SI
Advanced AS-Interface IC
Application
The relatively small package of the A²SI integrated circuit allows to integrate the AS-interface electronic circuit
within the housing of the sensor or actuator.
Integrated electronic AS-I actuator
in stainless steel sleeve
Bihl+Wiedemann GmbH
Mannheim, Germany
For applications that require higher ambient temperatures or for applications that lead to a higher power
dissipation of the integrated circuit (master and/or repeater applications) ZMD provides the same silicon die
within a 28-pin SOP package (A²SI-E).
Ordering Information
Ordering
Code
Description
Operating Temperature
Range
Package Type
Device
Marking
Shipping Form
A2SI-ST
Standard version of
A²SI
-25°C to 85°C
28-pin SSOP
A²SI
Tubes
(47 parts/tube)
A2SI-SR
Standard version of
A²SI
-25°C to 85°C
28-pin SSOP
A²SI
Tape-and-Reel
(1500 parts/reel)
A2SI-MT
Pre-programmed
master function
-25°C to 85°C
28-pin SSOP
A²SI
+ yellow dot
Tubes
(47 parts/tube)
A2SI-MR
Pre-programmed
master function
-25°C to 85°C
28-pin SSOP
A²SI
+ yellow dot
Tape-and-Reel
(1500 parts/reel)
Sales Office Dresden
ZMD AG
Grenzstraße 28
01109 Dresden, Germany
Phone
+49-351-8822-310
Fax
+49-351-8822-337
e-mail
sales@zmd.de
http://www.zmd.de
Sales Office Long Island
ZMD America Inc.
201 Old Country Road, Suite 204
Melville, NY 11747, USA
Phone
+1-631-549-2666
Fax
+1-631-549-2882
e-mail
sensors@zmda.com
http://www.zmda.com
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated , stored, or used without the prior
written consent of the copyright owner. The information furnished in this publication is preliminary and subject to changes without notice.
Feature Sheet, Rev.1.0, April 10, 2002
© ZMD AG