PA52PA52 • PA52A • PA52A P r o d u c t IPA52A Innnnoovvaa t i o n FFr roomm PA52, Power Operational Amplifiers FEATURES • HIGH INTERNAL DISSIPATION — 400 Watts • HIGH CURRENT — 40A Continuous, 80A PEAK • HIGH SLEW RATE — 50V/µs • OPTIONAL BOOST VOLTAGE INPUTS APPLICATIONS • SEMI-CONDUCTOR TESTING 12-pin DIP PACKAGE STYLE CR DESCRIPTION The PA52 is a MOSFET power operational amplifier that extends the performance limits of power amplifiers in slew rate and power bandwidth, while maintaining high current and power dissipation ratings. Boost voltage inputs allow the small signal portion of the amplifier to operate at a higher voltage than the high current output stage. The amplifier is then biased to achieve close linear swings to the supply rails at high currents for extra efficient operation. The JEDEC MO-127 12-pin Power Dip™ package (see Package Outlines) is hermetically sealed and isolated from the internal circuits. The use of compressible thermal washers and/or improper mounting torque will void the product warranty. Please see “General Operating Considerations”. EXTERNAL CONNECTIONS EQUIVALENT SCHEMATIC -Vb –IN +IN http://www.cirrus.com 12 2 11 +Vs 9 +Vs 3 -Vs 4 -OUT 5 8 6 7 Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved) TOP VIEW +Vb 10 -Vs -OUT PA52U 1 +OUT +OUT MAY 20091 APEX − PA52UREVG PA52 • PA52A SUPPLY VOLTAGE, +VS to –VS BOOST VOLTAGE, +Vb to -Vb OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder - 10s TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply BIAS CURRENT, initial BIAS CURRENT vs. supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC IMPUT CAPACITANCE COMMON MODE VOLTAGE RANGE Full temperature range COMMON MODE REJECTION,DC INPUT NOISE Full temp, range, VCM= ±20V 100KHZ BW, Rs=1KΩ GAIN OPEN LOOP,@ 15Hz GAIN BANDWIDTH PRODUCT POWER BANDWIDTH OUTPUT VOLTAGE SWING VOLTAGE SWING, PA52 VOLTAGE SWING, PA52A CURRENT, peak SETTLING TIME TO.1% SLEW RATE RESISTANCE POWER SUPPLY VOLTAGE, ±VBOOST VOLTAGE, ±VS CURRENT,quiescent, boost supply CURRENT, quiescent, total THERMAL RESISTANCE,AC,junction to case3 RESISTANCE,DC,junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case MIN Full temperature range Full temperature range RL=10Ω RL=4Ω, Vo=180VP-P, Av=-10 Full temperature range -VB +12 +VB -14 90 94 MAX MIN 5 20 10 10 .01 10 10" 13 10 50 30 50 50 100 10 102 3 90 Io=40A ±VBOOST=±VS±10V, Io=40A ±VBOOST=±VS±10V, Io=50A 3ms 10% Duty Cycle AV= -10,10V STEP,RL=4Ω AV=-10 IO=0, NO LOAD, 2MHZ ±VS ±VS Full temperature range Full temperature range +14, -12 ±3 Full temperature range, F>60HZ Full temperature range, F>60HZ Full temperature range Meets full range specification PA52 TYP 9.5 ±VS 8.0 5.8 ±VS 4.0 80 50 -25 1 2.5 ±30 26 30 .2 .25 12 PA52A TYP MAX UNITS 2 5 * * * * * * * * * * * mV µV/°V µV/V pA pA/V pA Ω pF * * * * V dB µVrms * * * * dB MHz kHz * * ±VS 5.8 ±VS 5.0 * * * * V V V A µs V/µs Ω ± TEST CONDITIONS1 ± ± PARAMETER 200V 230V 80A 400W ±20V ±Vb 300°C 150°C –65 to +150°C –55 to +125°C ± SPECIFICATIONS ± ± ABSOLUTE MAXIMUM RATINGS P r o d u c t I n n o v a t i o nF r o m ±115 * * ±100 * 32 * 36 * * * * * .25 * * .31 * * * 85 * * V V mA mA °C/W °C/W °C/W °C NOTES: * 1. 2. The specification of PA52A is identical to the specification for PA52 in applicable column to the left Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating. ±VBOOST = ±VS. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. For guidance, refer to the heatsink data sheet. 3. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz. CAUTION The PA52 is constructed from MOSFET transistors. ESD handling procedures must be observed. 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 850°C to avoid generating toxic fumes. 2 PA52U PA52 • PA52A T = TC 200 100 25 50 75 TEMPERATURE, T (°C) SMALL SIGNAL GAIN 80 40 0 COMMON MODE REJECTION, CMR (dB) 100 10 40 20 0 10 80 60 40 20 PA52U 10M –90 –135 1M OUTPUT VOLTAGE SWING 10 8 6 = VS T V BOOS 4 0V 2 0 200 RL = 4Ω –45 ST = VS +1 V BOO 0 10 20 30 40 OUTPUT CURRENT, IO (A) 50 POWER RESPONSE 100 10 100 1K 10K 100K 1M 10M FREQUENCY,Ff (Hz) 100 1K 10K 100K FREQUENCY, F (Hz) 1K 10K 100K 1M FREQUENCY F (Hz) SMALL SIGNAL PHASE 1 COMMON MODE REJECTION 0 10 100 –180 RL = 4Ω 1 60 0 OPEN LOOP PHASE, Ф (°) 120 OPEN LOOP GAIN RESPONSE, A (dB) 100 80 OUTPUT VOLTAGE, VO (VP-P) 0 POWER SUPPLY REJECTION 10 100 1K 10K 100K 1M 10M FREQUENCY, F (Hz) 100K FREQUENCY, F (Hz) QUIESCENT CURRENT 1.18 80 1.16 OUTPUT CURRENT, (A) 0 100 VOLTAGE DROP FROM SUPPLY, VS – VO (V) 300 POWER SUPPLY REJECTION, PSR (dB) POWER DERATING 400 NORMALIZED QUIESCENT CURRENT, IQ(X) INTERNAL POWER DISSIPATION, P (W) P r o d u c t I n n o v a t i o nF r o m 1.14 1.12 1.10 1.08 1.06 1.04 SAFE OPERATING AREA t= 1m s DC 1 0m DC T s T C =2 DC C = 5 85 °C T C = °C 12 5° C t= 10 1M 1 1.02 1 0 50 100 150 200 TOTAL SUPPLY VOLTAGE, VSS (V) 0.1 1 10 100 SUPPLY TO OUTPUT DIFFERENTIAL, (V) 3 PA52 • PA52A P r o d u c t I n n o v a t i o nF r o m GENERAL COMPENSATION Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.Cirrus.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selection; Apex Precision Power’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits. Compensation is internally fixed for a gain of 3 or more and is not adjustable by the user. The PA52 therefore is not unity gain stable. CURRENT LIMIT There is no internal circuit provision for current limit in the PA52. However, the PA52 circuit board in the PA52 evaluation kit does provide a means whereby the output current can be sensed. An external circuit current limit can thereby be implemented if needed. POWER SUPPLY BYPASSING Proper and sufficient power supply bypassing is crucial to proper operation of the PA52. Bypass the +Vb and -Vb supply pins with a minimum .1µF ceramic capacitors directly at the supply pins. On the +Vs and -Vs pins use a combination of ceramic and electrolytic capacitors. Use 1µF ceramic capacitors and an electrolytic capacitor at least 10µF for each amp of output current required. BOOST OPERATION With the VBOOST feature the small signal stages of the amplifier are operated at higher supply voltages than the amplifier’s high current output stage. +VBOOST (pin 11) and –VBOOST (pin 12) are connected to the small signal circuitry of the amplifier. +VS (pin 9,10) and –VS (pin 3,4) are connected to the high current output stage. An additional 10V on the VBOOST 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 swings to the supply rails is not required the +VBOOST and +VS pins must be strapped together as well as the –VBOOST and –VS pins. The boost voltage pins must not be at a voltage lower than the VS pins. 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