feature sheet, rev.1.0, april 10, 2002 ? zmd ag 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 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. c) led status indicator output (compliant with the standard indication recommendation) integrated watchdog temperature range -25c to + 85c block diagram receive transmit electronic inductor power supply oscillator 4 4 4 digital logic thermal protection a 2 si gnd2 gnd1 asi+ asi? 8 mhz dox dix dsr pst px fid led ird gnd 0v u in u out u5r u5rd osc1/2 cap asip asin 10 f 2.2 f 5v 24v powerfail detection ird amp c cap r cap
feature sheet, rev.1.0, april 10, 2002 ? 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. 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 -25c to 85c 28-pin ssop a2si tubes (47 parts/tube) a2si-sr standard version of a2si -25c to 85c 28-pin ssop a2si tape-and-reel (1500 parts/reel) a2si-mt pre-programmed master function -25c to 85c 28-pin ssop a2si + yellow dot tubes (47 parts/tube) A2SI-MR pre-programmed master function -25c to 85c 28-pin ssop a2si + yellow dot tape-and-reel (1500 parts/reel) sales office dresden sales office long island zmd ag zmd america inc. grenzstra?e 28 201 old country road, suite 204 01109 dresden, germany melville, ny 11747, usa phone +49-351-8822-310 phone +1-631-549-2666 fax +49-351-8822-337 fax +1-631-549-2882 e-mail sales@zmd.de e-mail sensors@zmda.com http://www.zmd.de 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 wit hout notice. integrated electronic as-i actuator in stainless steel sleeve bihl+wiedemann gmbh mannheim, germany
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