Power Operational Amplifier FEATURES • HIGH INTERNAL DISSIPATION — 125 Watts • HIGH VOLTAGE, HIGH CURRENT — 100V, 10A • HIGH SLEW RATE — 10V/µs • 4 WIRE CURRENT LIMIT SENSING • OPTIONAL BOOST VOLTAGE INPUTS • LINEAR AND ROTARY MOTOR DRIVES • YOKE/MAGNETIC FIELD EXCITATION • PROGRAMMABLE POWER SUPPLIES TO ±45V • INDUSTRIAL AUDIO • PACKAGE OPTION - DIP10 - DUAL-IN-LINE The MP39 is a cost-effective high voltage MOSFET power operational amplifier constructed with surface mount components on a thermally conductive but electrically isolated substrate. While the cost is low the MP39 offers many of the same features and performance specifications found in much more expensive hybrid power amplifiers. The metal substrate allows the MP39 to dissipate power up to 125 watts and its power supply voltages can range up to +/- 50 Volts (100V total). Optional boost voltage inputs allow the small signal portion of the amplifier to operate at higher supply voltages than the high current output stage. The amplifier is then biased to achieve close linear swings to the supply rails at high current for extra efficient operation. External compensation tailors performance to the user needs. A four-wire sense technique allows current limiting without the need to consider internal or external mili-ohm parasitic resistance in the output line. An Iq pin is available which can be used to shut off the quiescent current in the output stage. The output stage then operates class C and lowers quiescent power dissipation. This is useful in applications where output crossover distortion is not important. Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved)

MP39 • MP39A ABSOLUTE MAXIMUM RATINGS Parameter SUPPLY VOLTAGE, +VS to –VS BOOST VOLTAGE OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder - 10s TEMPERATURE, junction TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case SPECIFICATIONS Test Conditions (Note 1) INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature Full temp range OFFSET VOLTAGE, vs. power Full temp range OFFSET VOLTAGE, vs. supply BIAS CURRENT, initial BIAS CURRENT, vs. supply OFFSET CURRENT, initial INPUT CAPACITANCE COMMON MODE VOLTAGE...

Test Conditions (Note 1) OUTPUT VOLTAGE SWING VOLTAGE SWING SLEW RATE CAPACITIVE LOAD Full temp range, A V=+1 CURRENT, CONTINUOUS POWER SUPPLY VOLTAGE Full temp range CURRENT, quiescent, boost supply CURRENT, quiescent, total Full temp range, F>60Hz Full temp range, F<60Hz THERMAL RESISTANCE, AC, junction to case RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case Full temp range Meets full range specification NOTES: * The specification of MP39A is identical to the specification for MP39 in applicable column to the left. 1. Unless otherwise noted: TC = 25°C, RC...

PHASE (DEGREES) SLEW RATE VS. COMP. 1 100 10 SUPPLY to OUTPUT DIFFERENTIAL, VS-VO (V) POWER RESPONSE PHASE RESPONSE OUTPUT VOLTAGE DROP FROM SUPPLY, VS -VO (V) OPEN LOOP GAIN, AOL (dB) SMALL SIGNAL RESPONSE HARMONIC DISTORTION POWER DERATING INTERNAL POWER DISSIPATION, P(W) TYPICAL PERFORMANCE GRAPHS OUTPUT VOLTAGE SWING

COMPONENT SIDE VIEW * SEE "BYPASSING" PARAGRAPH Phase Compensation Gain Cc Rc 1 470pF 100Ω ≥3 220pF Short ≥ 10 100pF Short TYPICAL APPLICATION The high power bandwidth and high voltage output of the MP39 allows driving ultra-sonic transducers via a resonant circuit including the transducer and a matching transformer. The load circuit appears resistive to the MP39. ULTRA-SONIC AMPLIFIER TUNED TRANSFORMER Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation....

With the VB feature the small signal stages of the amplifier are operated at higher supply voltages than the amplifier's high current output stage. +VS (pins 12-14) and –VS (pins 18-20) are connected to the high current output stage. An additional 10V on the VB pins is sufficient to allow the small signal stages to drive the output transistors into saturation and improve the output voltage swing for extra efficient operation when required. When close swing to the supply rails is not required the +VB and +VS pins must be strapped together as well as the –VB and –VS pins. The boost voltage pins...