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Product Innovation From
PA01 * PA73 PA01 * PA73
FEATURES
* LOWCOST,ECONOMYMODEL--PA01 * HIGHOUTPUTCURRENT--Upto5APEAK * EXCELLENTLINEARITY--PA01 * HIGHSUPPLYVOLTAGE--Upto30V * ISOLATEDCASE--300V
APPLICATIONS
* MOTOR,VALVEANDACTUATORCONTROL * MAGNETICDEFLECTIONCIRCUITSUPTO4A * POWERTRANSDUCERSUPTO20kHz * TEMPERATURECONTROLUPTO180W * PROGRAMMABLEPOWERSUPPLIESUPTO48V * AUDIOAMPLIFIERSUPTO50WRMS
8-PINTO-3 PACKAGESTYLECE TYPICALAPPLICATION
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 interconnections 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 mounting torque will void the product warranty. Please see "General Operating Considerations".
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
EXTERNALCONNECTIONS
NOTE 1: * Indicates not used in PA73. Open base of Q2A connected to output of A1.
Cirrus Logic, Inc. PA01-73U http://www.cirrus.com
Copyright (c) Cirrus Logic, Inc. 2007 (All Rights Reserved)
NOV 2007 1 PA01-73U rev T
PA01 * PA73
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
Product Innovation From
ABSOLUTEMAXIMUMRATINGS
SUPPLY VOLTAGE, +VS to -VS OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common-mode TEMPERATURE, junction1 TEMPERATURE, pin solder -10s TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case TEST CONDITIONS 2 TC = 25C Full temperature range TC = 25C TC = 25C TC = 25C Full temperature range TC = 25C TC = 25C Full temperature range TC = 25C TC = 25C TC = 25C Full temperature range TC = 25C, VCM = VS -6V Full temp. range, full load TC = 25C, full load TC = 25C, IO = 4A, VO = 40VPP Full temperature range TC = 25C, IO = 5A Full temp. range, IO = 2A Full temp. range, IO = 46mA TC = 25C TC = 25C, 2V step TC = 25C, RL = 2.5 Full temperature range Full temperature range Full temperature range TC = 25C F > 60Hz F < 60Hz Meets full range specifications -25 MIN PA01 TYP 5 10 35 20 15 .05 .02 12 .05 200 10 3 VS-3 110 113 1 23 45
PA01 60V 5A 67W 37V VS 200C 300C -65 to +150C -25 to +85C MAX 12 65 50 .4 30 MIN PA73 TYP * * * * * * * * * * * * * * * * * * * * * *
PA73 68V 5A 67W 37V VS 200C 300C -65 to +150C -25 to +85C MAX 10 * 200 40 * * UNITS mV V/C V/V V/W nA nA/C nA/V nA nA/C M M pF V dB dB MHz kHz V V V A s V/s nF
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply OFFSET VOLTAGE, vs. power BIAS CURRENT, initial BIAS CURRENT, vs. temperature BIAS CURRENT, vs. supply OFFSET CURRENT, initial OFFSET CURRENT, vs. temperature INPUT IMPEDANCE, common-mode INPUT IMPEDANCE, differential INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE3 COMMON MODE REJECTION, DC3 GAIN OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT @ 1MHz POWER BANDWIDTH PHASE MARGIN OUTPUT VOLTAGE SWING3 VOLTAGE SWING3 VOLTAGE SWING3 CURRENT, peak SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD, unity gain CAPACITIVE LOAD, gain > 4 POWER SUPPLY VOLTAGE CURRENT, quiescent THERMAL RESISTANCE, AC, junction to case4 RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case
VS-6 70 91 15
* * * *
VS-10 VS-5 VS-6 VS-5 VS-5 5 2 1.0 2.6 1 SOA 10 28 20 1.9 2.4 30 25 28 50 2.1 2.6 +85
VS-8 * * * *
* * * * 2.6 * * * * 30 5 * * *
V mA C/W C/W C/W C
*
NOTES: * The specification of PA73 is identical to the specification for PA01 in applicable column to the left. 1. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. 2. The power supply voltage specified under the TYP rating applies unless otherwise noted as a test condition. 3. +VS and -VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to -VS. 4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
CAUTION
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or subject to temperatures in excess of 850C to avoid generating toxic fumes.
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PA01-73U
Product Innovation From
PA01 * PA73
TYPICAL PERFORMANCE GRAPHS
PA01-73U

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PA01 * PA73
OPERATING CONSIDERATIONS
Product Innovation From
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit and heat sink selection. The "Application Notes" and "Technical Seminar" sections contain a wealth of information on specific types of applications. Package outlines, heat sinks, mounting hardware and other accessories are located in the "Packages and Accessories" section. Evaluation Kits are available for most Apex product models, consult the "Evaluation Kit" section for details. For the most current version of all Apex product data sheets, visit www.apexmicrotech.com. 1. For sine wave outputs, use Power Design1 to plot a load line. Make sure the load line does not cross the 0.5ms limit and that excursions beyond any other second breakdown line do not exceed the time label, and have a duty cycle of no more than 10%. For other waveform outputs, manual load line plotting is recommended. Applications Note 22, SOA AND LOAD LINES, will be helpful. A Spice type analysis can be very useful in that a hardware setup often calls for instruments or amplifiers with wide common mode rejection ranges. 2. EMF generating or reactive load and short circuits to the supply rail or shorts to common are safe if the current limits are set as follows at TC = 85C. VS 34V 30V 25V 20V 15V SHORT TO VS C, L, OR EMF LOAD .58A .46A .61A .86A 1.3A SHORT TO COMMON 1.1A 1.4A 1.7A 2.1A 2.9A
SAFEOPERATINGAREA(SOA)
The output stage of most power amplifiers has three distinct limitations: 1. The current handling capability of the transistor geometry and the wire bonds. 2. The second breakdown effect which occurs whenever the simultaneous collector current and collector-emitter voltage exceeds specified limits. 3. The junction temperature of the output transistors.
3. The output stage is protected against occaisional transient flyback. However, for protection against sustained, high energy flyback, external fast-recovery diodes should be used.
CURRENTLIMIT
Proper operation requires the use of two current limit resistors, connected as shown, in the external connection diagram. The minimum value for RCL is 0.12 ohm; however, for optimum reliability it should be set as high as possible. Refer to the "General Operating Considerations" section of the handbook for current limit adjust details.
The SOA curves combine the effect of these limits. For a given application, the direction and magnitude of the output current should be calculated or measured and checked against the SOA curves. This is simple for resistive loads but more complex for reactive and EMF generating loads.
1
Note 1. Power Design is a self-extracting Excel spreadsheet available free from www.apexmicrotech.com
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PA01-73U
Product Innovation From
PA01 * PA73
Copyright (c) 2007 Cirrus Logic, Inc. All rights reserved Printed in the USA Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained is this document is accurate and reliable. However, the information is subject to change without notice and is provided `as is' without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied upon is current and complete. All products are sold subject to the terms and conditions of sales supplied at the time of order acknowledgement, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and, by furnishing this information, Cirrus grants no license, express or implied, under any patents. Mask work rights, copyrights, trademarks, trade secrets, or other intellectual property rights. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any for or by any means (electronic, mechanical, photographic, or otherwise) unless distributed in its entirety with all copyright notices attached. No part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent of Cirrus. Certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage ("critical applications"). Cirrus products are not designed, authorized, or warranted to be suitable for use in products surgically implanted into the body, automotive safety or security devices, life-support products or other critical applications, inclusion of Cirrus products in such applications is understood to be fully at the customer's risk and cirrus disclaims and makes no warranty of merchantability and fitness for particular purpose, with regard to any Cirrus product that is used in such a manner. If the customer uses or permits the use of Cirrus products in critical products in critical applications, customer agrees, by such use, to fully indemnify Cirrus, its officers, directors, employees, distributors and other agents from any and all liability, including attorneys' fees and costs that may result from or arise in connection with these uses. Cirrus Logic, Cirrus, the Cirrus Logic logo designs, Apex, and Apex Precision Power are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.
CIRRUS LOGIC, INC. * 5980 N SHANNON ROAD, TUCSON, AZ 85741 USA * TELEPHONE (520) 690-8600 APPLICATIONS SUPPORT (800) 546-2739 * FAX (520) 888-3329 * EMAIL support@cirrus.com ORDERS (520) 690-8601 * FAX (520) 690-7749 * EMAIL teamsales@cirrus.com
PA01-73U

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