300V, 1.5A, 250 V/µs Wide Bandwidth Amplifier
5Pages

Power Operational Amplifier FEATURES • HIGH VOLTAGE - 300 VOLTS • HIGH OUTPUT CURRENT – 1.5 AMPS • 70 WATT DISSIPATION CAPABILITY • 175 MHz GAIN BANDWIDTH • 250 V/µ-SECOND SLEW RATE APPLICATIONS • PZT DRIVE • MAGNETIC DEFLECTION • PROGRAMMABLE POWER SUPPLIES • 70V LINE AUDIO to 70W DESCRIPTION The PA96 is a state of the art high voltage, high current operational amplifier designed to drive resistive, capacitive and inductive loads. For optimum linearity, the output stage is biased for class A/B operation. External compensation provides user flexibility in maximizing bandwidth at any gain setting. The safe operating area (SOA) can be observed for all operating conditions by selection of user programmable current limit. For continuous operation under load, a heatsink of proper rating is required. The 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 isolation washers voids the warranty. EQUIVALENT CIRCUIT DIAGRAM +Vs 3 PZT POSITION CONTROL The MOSFET output stage of the PA96 provides superior SOA performance compared to bipolar output stages where secondary breakdown is a concern. The extended SOA is ideal in applications where the load is highly reactive and may impose simultaneously both high voltage and high current across the output stage transistors. In the figure above a piezo-electric transducer is driven to high currents and high voltages by the PA96. EXTERNAL CONNECTIONS COMP COMP COMP Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved)

PA96 ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +VS to −VS OUTPUT CURRENT, continuous POWER DISSIPATION, internal, DC INPUT VOLTAGE, common mode INPUT VOLTAGE, differential TEMPERATURE, pin solder, 10s TEMPERATURE, junction1 TEMPERATURE RANGE, storage OPERATING TEMPERATURE, case SPECIFICATIONS PARAMETER INPUT OFFSET VOLTAGE OFFSET VOLTAGE vs. temperature OFFSET VOLTAGE vs. supply BIAS CURRENT, initial BIAS CURRENT vs. supply OFFSET CURRENT, initial INPUT RESISTANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE3 COMMON MODE VOLTAGE RANGE3 COMMON MODE REJECTION, DC NOISE GAIN OPEN LOOP @ 15Hz...

PA96 OPEN LOOP FREQUENCY RESPONSE OPEN LOOP PHASE RESPONSE OUTPUT VOLTAGE SWING QUIESCENT CURRENT vs. POWER SUPPLY QUIESCENT CURRENT, mA 90 150 210 270 POWER SUPPLY RAIL to RAIL INTERNAL POWER DISSIPATION, W LARGE SIGNAL PULSE RESPONSE DC OFFSET vs. POWER SUPPLY POWER DERATING 90 150 210 270 POWER SUPPLY, RAIL to RAIL QUIESCENT CURRENT vs. TEMP. QUIESCENT CURRENT, mA SMALL SIGNAL PULSE RESPONSE RAIL TO RAIL PULSE RESPONSE OUTPUT CURRENT FROM +VS or –VS (A) GAIN BANDWIDTH vs. +SUPPLY VOLTAGE GAIN BANDWIDTH PRODUCT @ 1MHz .1 10 20 30 4050 100 200 300 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE, VS...

COMPENSATION TABLE Please read Application Note 1 “General Operating Considerations” which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexanalog.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit, heat sink selection, Apex Microtechnology’s Application Notes library, Technical Seminar Workbook, and Evaluation Kits. The following table tabulates recommended compensation capacitor values vs. gain. These values will typically result in...

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...