PA08V

PA08V PA08V PA08V Power Operational Amplifiers FEATURES • EXTENDED SUPPLY RANGE UP TO ±175V or 350V TOTAL • PROVIDES PA08 PERFORMANCE UP TO ±150mA PROGRAMMABLE CURRENT LIMIT LOW DRIFT FET INPUT 8-PIN TO-3 PACKAGE STYLE CE • PROGRAMMABLE POWER SUPPLIES UP TO 340V • ELECTROSTATIC TRANSDUCERS & DEFLECTION • PIEZO ELECTRIC TRANSDUCERS • HIGH VOLTAGE INSTRUMENTATION Please consult the PA08 data sheet for basic information on this amplifier, plus the application notes in this Apex Microtechnology Databook, for recommendations on stability, current limiting, heatsinks, bypassing, and suggestions for circuit functions. OUTPUT CURRENT FROM +VS OR –VS (mA) APPLICATIONS DESCRIPTION The PA08V is an extended supply range operational amplifier capable of output voltage swings of ±170V with dual supplies or 340V total supply voltage on single or non-symmetric supplies. High accuracy is achieved with a cascode input circuit configuration. All internal biasing is referenced to a zener diode fed by a FET constant current source. As a result, the PA08 features an unprecedented supply range and excellent supply rejection. The output stage is biased class A-B for linear operation. Internal phase compensation assures stability at all gain settings. The safe operating area (SOA) can be observed with all types of loads by choosing the appropriate current limiting resistors. For operation into inductive loads, two external flyback pulse protection diodes are recommended. A heatsink may be necessary to maintain the proper case temperature under normal operating conditions. This hybrid integrated circuit utilizes a beryllia (BeO) substrate, thick film 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 TO-3 package is hermetically sealed and electrically isolated. The use of compressible thermal isolation washers and/or improper mounting torque will void the product warranty. Please see “General Operating Considerations”. t= 100 80 t= t= 50 ste 40 0.5 s ms 1m s 5m s ad ys 30 20 0µ t= tat e 20 15 90 100 125 150 175 200 250 300 350 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE (V) EQUIVALENT SCHEMATIC 3 7 D1 Q1 C1 Q2 Q3 Q4 C3 Q5 SPECIFICATIONS Q6 2 Specifications of the standard PA08 apply with the benefit of supply ratings being extended to ±175V. Design changes enabling the total supply rating of 350V have no effect on the shape of the typical performance graphs. SAFE OPERATING AREA The extended safe operating area is as follows: When operating on ±175V, maximum safe values of capacitive and inductive loading are .2µF and 200mH. Maximum safe current limit for a short to common is 50mA, and for a short to supply rails, the maximum is 15mA. Q9 Q8 C4 Q7 C2 1 Q10 5 4 GENERAL CONSIDERATIONS www.apexanalog.com PA08VU SAFE OPERATING AREA CURVE (SOA) 150 Q11 Q19 8 Q12A Q12B Q17 Q16 Q15 D2 6 Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) SEP 2012 1 PA08VU REVI PA08V NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks of their respective holders. 2 www.apexanalog.com Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) SEP 2012 PA08VU PA08VU REVI