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PA01 Datasheet(PDF) 1 Page - Cirrus Logic |
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PA01 Datasheet(HTML) 1 Page - Cirrus Logic |
1 / 5 page P r o d u c t I n n o v a t i o n F r o m PA01 • PA73 PA01-73U 1 PA01, PA73 FEATURES •LOWCOST,ECONOMYMODEL—PA01 •HIGHOUTPUTCURRENT—Upto±5APEAK •EXCELLENTLINEARITY—PA01 •HIGHSUPPLYVOLTAGE—Upto±30V •ISOLATEDCASE—300V APPLICATIONS •MOTOR,VALVEANDACTUATORCONTROL •MAGNETICDEFLECTIONCIRCUITSUPTO4A •POWERTRANSDUCERSUPTO20kHz •TEMPERATURECONTROLUPTO180W •PROGRAMMABLEPOWERSUPPLIESUPTO48V •AUDIOAMPLIFIERSUPTO50WRMS DESCRIPTION The PA01 and PA73 are high voltage, high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. For optimum linearity, the PA01 has a class A/B output stage. The PA73 has a simple class C output stage (see Note 1) to reduce cost for motor control and other applications where crossover distortion is not critical and to provide interchangeability with type 3573 amplifiers. The safe operating area (SOA) can be observed for all operating conditions by selection of user programmable current limit resistors. These amplifiers are internally compensated for all gain settings. For continuous operation under load, a heatsink of proper rating is recommended. This hybrid integrated circuit utilizes thick film (cermet) resistors, ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable inter- connections at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. The use of compressible thermal washers and/or improper mount- ing torque will void the product warranty. Please see “General Operating Considerations”. EXTERNALCONNECTIONS CL+ +V +IN –IN –V N.C. CL– OUT S S TOP VIEW RCL+ RCL– OUTPUT 1 2 3 4 5 6 7 8 NOTE 1: * Indicates not used in PA73. Open base of Q2A connected to output of A1. TYPICALAPPLICATION Unidirectional Optical Speed Control The pulse output of a non-contact optical sensor drives a voltage-to-frequency converter which generates feedback for the op amp. With the loop closed in this manner, the op amp corrects for any variations in the speed due to changing load. Because of operation in only one direction, an unsymmetrical supply is used to maximize efficiency of both power op amp and power supply. High speed diodes at the input protect the op amp from commutator noise which may be generated by the motor. EQUIVALENTSCHEMATIC 24V .33Ω 3W –30V +6V CF RIN PA01 RF F/V OPTO PULSE GEN. RCL– .33Ω 3W RCL+ VIN 0/–5V M 0/+5V 1N4148 UNSYMMETRICAL SUPPLIES FOR EFFICIENCY 3 4 5 6 2 1 8 A1 D1 Q1 Q4 Q3 Q5 C1 Q2A Q2B Q6B Q6A * * * * * * 8-PINTO-3 PACKAGESTYLECE PA01 • PA73 P r o d u c t I n n o v a t i o n F r o m Power Operational Amplifier Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved) http://www.cirrus.com MAY 2009 APEX − PA01-73UREVU |
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Similar Description - PA01_09 |
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