PA02PA02 • PA02A • PA02A P rr oo dd uu cc tt IPA02A n n o v a tt ii oo nn FFrroomm PPA02, Power Operational Amplifiers FEATURES • High power bandwidth — 350kHz • High slew rate — 20V/µs • Fast settling time — 600ns • Low crossover distortion — Class A/B • Low internal losses — 1.2V at 2A • High output current — ±5A Peak • Low input bias current — FET Input • Isolated case — 300 VDC 8-pin TO-3 PACKAGE STYLE CE APPLICATIONS TYPICAL APPLICATION • Motor, valve and actuator control • Magnetic deflection circuits up to 5A • Power transducers up to 350 kHz • Audio amplifiers up to 30W RMS Vehicular Sound System Power Stage 100K +12 DESCRIPTION .47µF 16K RCL+ .27Ω The PA02 and PA02A are wideband, high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. Their complementary “collector output” stage can swing close to the supply rails and is protected against inductive kickback. For optimum linearity, the output stage is biased for class A/B operation. The safe operating area (SOA) can be observed for all operating conditions by selection of user programmable, current limiting resistors (down to 10mA). Both amplifiers are internally compensated but are not recommended for use as unity gain followers. For continuous operation under load, mounting on a heatsink of proper rating is recommended. These hybrid integrated circuits utilize 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. Isolation washers are not recommended. The use of compressible thermal washers and/or improper mounting torque will void the product warranty. Please see “General Operating Considerations”. LOW INTERNAL LOSS MAXIMIZES EFFICIENCY When system voltages are low and power is at a premium, the PA02 is a natural choice. The circuit above utilizes not only the feature of low internal loss of the PA02, but also its very low distortion level to implement a crystal clear audio amplifier suitable even for airborne applications. This circuit uses AC coupling of both the input signal and the gain circuit to render DC voltage across the speaker insignificant. The resistor and capacitor across the inputs form a stability enhancement network. The 0.27 ohm current limit resistors provide protection in the event of an output short circuit. EQUIVALENT SCHEMATIC EXTERNAL CONNECTIONS 1K PA02 .001µF IN .47µF –12 .27Ω 2 RCL+ R1 R2 R5 R3 D1 Q1 R6 Q2 R4 Q4 6 OUT 3 R7 Q3 3 Q5 R8 Q7 R10 OUT R15 A1 R12 R13 Q8 +VS 2 1 5 R9 3.2Ω 16W RCL– 16K 4 Q6 –IN 8 CL+ 1 4 TOP VIEW 5 +IN 6 7 –VS 8 CL– RCL– R14 D2 R11 7 PA02U http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved) MAY 20091 APEX − PA02UREVO PA02 • PA02A P r o d u c t I n n o v a t i o nF r o m ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +VS to –VS OUTPUT CURRENT, within SOA POWER DISSIPATION, internal1 INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder - 10s TEMPERATURE, junction1 TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case SPECIFICATIONS PARAMETER TEST CONDITIONS 2, 6 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, DC INPUT CAPACITANCE COMMON MODE VOLT. RANGE5, Pos. COMMON MODE VOLT. RANGE5, Neg. COMMON MODE REJECTION, DC TC = 25°C Full temperature range TC = 25°C TC = 25°C TC = 25°C TC = 85°C TC = 25°C TC = 25°C TC = 85°C TC = 25°C TC = 25°C Full temperature range Full temperature range Full temperature range GAIN OPEN LOOP GAIN at 10Hz OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN TC = 25°C, 1kΩ load Full temp. range, 10kΩ load TC = 25°C, 10Ω load TC = 25°C, 10Ω load Full temp. range, 10Ω load OUTPUT VOLTAGE SWING3 VOLTAGE SWING3 CURRENT, peak SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD HARMONIC DISTORTION SMALL SIGNAL rise/fall time SMALL SIGNAL overshoot TC = 25°C, IO = 5A, RCL = .08Ω Full temp. range, IO = 2A TC = 25°C TC = 25°C, 2V step TC = 25°C Full temp. range, AV > 10 PO = .5W, F = 1kHz, RL = 10Ω RL = 10Ω, AV = 1 RL = 10Ω, AV = 1 POWER SUPPLY VOLTAGE CURRENT, quiescent Full temperature range TC = 25°C THERMAL RESISTANCE, AC junction to case4 RESISTANCE, DC junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case MIN ±5 ±10 ±10 ±6 50 .01 25 +VS –6 –VS +6 70 86 1000 3 +VS –3 –VS +5 100 103 100 4.5 350 30 ±VS –4 ±VS –3 ±VS –2 ±VS –1.2 5 .6 13 20 SOA .004 100 10 ±7 F > 60Hz F < 60Hz Meets full range specifications PA02 TYP –25 38V 5A 48W ±30V –VS+2V to +VS–2V 300°C 150°C –65 to +150°C –55 to +125°C MAX MIN PA02A TYP MAX UNITS ±10 ±1 ±3 ±50 * ±25 * * 200 25 100 200 * * 100 15 50 100 * * * * * * * * * mV µV/°C µV/V µV/W pA pA/°C pA/V pA pA/°C GΩ pF V V dB * * * * * * dB dB MHz kHz ° * * * * * * * * * * * * V V A µs V/µs ±15 27 ±19 * 40 * * * * 1.9 2.4 30 2.1 * * 2.6 * * * +85 –55 +125 % ns % V mA °C/W °C/W °C/W °C NOTES: * The specification of PA02A is identical to the specification for PA02 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 for all specifications is the TYP rating 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. 5. Exceeding CMV range can cause the output to latch. 6. Full temperature specifications are guaranteed but not 100% tested. 7. The absolute maximum negative input voltage is equal to the negative power supply voltage plus 1V (-Vs + 1V). CAUTION 2 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. PA02U PA02 • PA02A P r o d u c t I n n o v a t i o nF r o m T=TC 30 20 10 T=TA 0 150 2.5 TC = 25° to 85°C 2.0 1.5 ±VO 1.0 .5 1 2 3 4 OUTPUT CURRENT, IO (A) 2.5 RCL = 0.3Ω 2.0 1.5 RCL = 0.62Ω 1.0 .5 0 –25 5 PHASE RESPONSE 0 50 0 25 75 100 125 CASE TEMPERATURE, TC (°C) POWER RESPONSE 30 60 40 20 –90 –120 –150 0 –180 BIAS CURRENT 64 16 4 1 .25 .06 –15 40 5 45 65 85 105 25 CASE TEMPERATURE, TC (°C) INPUT NOISE 35 30 25 20 15 10 10 PA02U 100 1K 10K FREQUENCY, F (Hz) .1M –210 120 1 10 COMMON MODE REJECTION 100 80 60 40 20 1 1.6 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) QUIESCENT CURRENT 18 13 | +VS | + | –VS | = 30V 10 7.8 140 .2M .5M .7M 1M .3M FREQUENCY, F (Hz) POWER SUPPLY REJECTION 120 100 +VS 80 60 –VS 40 20 0 10 3 1.5 100 1K 10K .1M 1M FREQUENCY, F(Hz) 1.3 1.2 1.1 2 .5 1.0 0 25 50 75 100 125 CASE TEMPERATURE, TC (°C) AD V 1m NO LO 1.5 1 10M SETTLING TIME 2.5 1.4 .9 –25 23 6 .1M 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) TIME, t (µS) 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) COMMON MODE REJECTION, CMR (dB) 256 10 NORMALIZED QUIESCENT CURRENT, IQ (X) 1 POWER SUPPLY REJECTION, PSR (dB) –60 PHASE, Ф (°) 80 OUTPUT VOLTAGE, VO (VP-P) | +VS | + | –VS | = 36V –30 OPEN LOOP GAIN, AOL (dB) 0 CURRENT LIMIT 3.0 3.0 100 –20 NORMALIZED BIAS CURRENT, IB (X) 25 50 75 100 125 TEMPERATURE, T (°C) SMALL SIGNAL RESPONSE 120 INPUT NOISE VOLTAGE,en (nV/√Hz) SATURATION VOLTAGE, VS –VO (V) INTERNAL POWER DISSIPATION, P(W) 40 0 OUTPUT VOLTAGE SWING 3.5 CURRENT LIMIT, ILIM (A) POWER DERATING 50 V 10m NO AD LO AD 0Ω LO 10mV 1 0 1 3 4 7 2 5 6 8 OUTPUT CHANGE FROM ZERO, VOLTS 3 PA02 • PA02A 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. .1 W m .03 = 50 PO W = PO .003 =5 PO W .001 100 300 1K 3K 10K 30K .1M .3M FREQUENCY, F (Hz) PULSE RESPONSE 15 OUTPUT VOLTAGE, VO (V) SAFE OPERATING AREA .5 .01 VIN = ±1V, tr = 100ns LOAD = 10Ω 10 5 0 –5 –10 –15 OUTPUT VOLTAGE, VO (V) 5 * If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 8V below the supply rail with ILIM = 5A, or 17V below the supply rail with ILIM = 2A while the amplifier is current limiting, the inductor should be capacitively coupled or the current limit must be lowered to meet SOA criteria. VIN = ±.2V, tr = 50ns .2 .1 2. The amplifier can handle any EMF generating or reactive load and short circuits to the supply rails or shorts to common if the current limits are set as follows at TC = 85°C. SHORT TO ±VS SHORT TO C, L OR EMF LOAD COMMON ±VS 18V .5A 1.7A 15V .7A 2.8A 10V 1.6A 4.2A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. 0 –.1 –.2 –.3 0 .5 1.0 TIME, t (µS) 1.5 LOADING EFFECTS 0 DELTA GAIN WITH LOAD, ∆A (dB) 3 4 2 TIME, t (µS) PULSE RESPONSE .3 4 1 0 CURRENT LIMIT 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. –.3 IO = 150mA –.6 DEVICE MOUNTING –.9 IO = 400mA –1.2 –1.5 SOA 5.0 The SOA curves combine the TC 4.0 =2 effect of all limits for this Power 5°C T C = 3.0 Op Amp. For a given application, 70 T °C C = the direction and magnitude of 2.0 10 0° C the output current should be calT 1.5 C = culated or measured and checked 12 5° C against the SOA curves. This is 1.0 simple for resistive loads but more 0.7 TH complex for reactive and EMF ER 0.5 generating loads. The following MA L guidelines may save extensive 0.3 analytical efforts: 0.2 1. Under transient conditions, 2 3 5 7 10 15 20 25 30 40 capacitive and dynamic* loads SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS –VO (V) up to the following maximums are safe: CAPACITIVE LOAD INDUCTIVE LOAD ILIM = 2A ILIM = 5A ILIM = 2A ILIM = 5A ±VS 18V 2mF 0.7mF .2H 10mH 15V 10mF 2.2mF .7H 25mH 10V 25mF 10mF 5H 50mH E s AT 5m ND N W ST t = CO DO DY SE AK EA E ST BR DISTORTION, THD (%) .3 GENERAL HARMONIC DISTORTION GAIN = 1 LOAD = 10Ω OUTPUT CURRENT FROM +V OR –VS (A) 1 P r o d u c t I n n o v a t i o nF r o m 100 10K 1K FREQUENCY, F (Hz) .1M The case (mounting flange) is electrically isolated and should be mounted directly to a heatsink with thermal compound. Screws with Belville spring washers are recommended to maintain positive clamping pressure on heatsink mounting surfaces. Long periods of thermal cycling can loosen mounting screws and increase thermal resistance. Since the case is electrically isolated (floating) with respect to the internal circuits it is recommended to connect it to common or other convenient AC ground potential. PA02U P r o d u c t I n n o v a t i o nF r o m PA02 • PA02A Contacting Cirrus Logic Support For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact [email protected]. International customers can also request support by contacting their local Cirrus Logic Sales Representative. To find the one nearest to you, go to www.cirrus.com IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in 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 on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, 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. 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