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| POWER OPERATIONAL AMPLIFIERS PA02 * PA02A MICROTECHNOLOGY HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739 FEATURES * * * * * * * * HIGH POWER BANDWIDTH -- 350kHz HIGH SLEW RATE -- 20V/s 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 APPLICATIONS * * * * MOTOR, VALVE AND ACTUATOR CONTROL MAGNETIC DEFLECTION CIRCUITS UP TO 5A POWER TRANSDUCERS UP TO 350 kHz AUDIO AMPLIFIERS UP TO 30W RMS TYPICAL APPLICATION Vehicular Sound System Power Stage 100K +12 .47F 16K 1K IN .47F .001F 16K -12 PA02 RCL- .27 3.2 16W RCL+ .27 DESCRIPTION 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. EXTERNAL CONNECTIONS RCL+ +VS OUT 3 2 CL+ 1 EQUIVALENT SCHEMATIC 2 R1 R2 R4 Q4 6 A1 5 Q5 R8 Q7 R9 R10 R11 7 R12 Q8 R13 Q6 8 R14 D2 4 R15 R3 Q2 R5 Q1 R6 R7 1 Q3 3 D1 OUT 4 TOP VIEW 5 -IN +IN 6 -VS 7 8 CL- RCL- APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com PA02 * PA02A 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 PA02 TEST CONDITIONS 2, 6 ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS 38V 5A 48W VS -5V VS -2V 300C 150C -65 to +150C -55 to +125C PA02A MAX MIN TYP MAX UNITS SPECIFICATIONS PARAMETER 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 GAIN OPEN LOOP GAIN at 10Hz OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN 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 POWER SUPPLY VOLTAGE CURRENT, quiescent THERMAL RESISTANCE, AC junction to case4 RESISTANCE, DC junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: * 1. 2. 3. 4. 5. 6. F > 60Hz F < 60Hz Meets full range specifications -25 Full temperature range TC = 25C 7 TC = 25C, IO = 5A, RCL = .08 Full temp. range, IO = 2A TC = 25C TC = 25C, 2V step TC = 25C Full temp. range, AV > 10 PO = .5W, F = 1kHz, RL = 10 RL = 10, AV = 1 RL = 10, AV = 1 TC = 25C, 1k load Full temp. range, 10k load TC = 25C, 10 load TC = 25C, 10 load Full temp. range, 10 load 86 TC = 25C Full temperature range TC = 25C TC = 25C TC = 25C TC = 85C TC = 25C TC = 25C TC = 85C TC = 25C TC = 25C Full temperature range Full temperature range Full temperature range MIN TYP 5 10 10 6 50 .01 25 1000 3 +VS -3 -VS +5 100 10 50 200 200 100 100 * * * 1 * * * 25 * 15 * * * * * 3 25 100 * 50 * +VS -6 -VS +6 70 mV V/C V/V V/W pA pA/C pA/V pA pA/C G pF V V dB 103 100 4.5 350 30 * * * * * * dB dB MHz kHz V V A s V/s % ns % VS -4 VS -3 VS -2 VS -1.2 5 .6 13 20 SOA .004 100 10 15 27 19 40 * * * * * * * * * * * * * * * * * V mA C/W C/W C/W C 1.9 2.4 30 2.1 2.6 +85 -55 * * * * * +125 The specification of PA02A is identical to the specification for PA02 in applicable column to the left. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test condition. +VS and -VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to -VS. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. Exceeding CMV range can cause the output to latch. Full temperature specifications are guaranteed but not 100% tested. 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 850C to avoid generating toxic fumes. CAUTION APEX MICROTECHNOLOGY CORPORATION * 5980 NORTH SHANNON ROAD * TUCSON, ARIZONA 85741 * USA * APPLICATIONS HOTLINE: 1 (800) 546-2739 TYPICAL PERFORMANCE GRAPHS PA02 * PA02A OUTPUT VOLTAGE SWING SATURATION VOLTAGE, VS -VO (V) 3.5 3.0 3.0 2.5 TC = 25 to 85C 2.0 1.5 VO 1.0 .5 2.5 2.0 1.5 1.0 .5 0 -25 50 0 25 75 100 125 CASE TEMPERATURE, TC (C) 30 RCL = 0.62 RCL = 0.3 INTERNAL POWER DISSIPATION, P(W) 50 40 POWER DERATING CURRENT LIMIT T=TC 30 20 10 T=TA 0 0 25 50 75 100 125 150 TEMPERATURE, T (C) 0 1 2 3 4 OUTPUT CURRENT, I O(A) 5 SMALL SIGNAL RESPONSE 120 0 -30 PHASE RESPONSE OUTPUT VOLTAGE, VO (VPP ) CURRENT LIMIT, I LIM (A) POWER RESPONSE | +VS | + | -VS | = 36V OPEN LOOP GAIN, AOL (dB) 100 80 60 40 20 0 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) 23 18 13 10 7.8 6 .1M .2M .3M .5M .7M 1M FREQUENCY, F (Hz) | +VS | + | -VS | = 30V PHASE, () -60 -90 -120 -150 -180 -210 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) -20 NORMALIZED BIAS CURRENT, I B (X) 256 64 16 4 1 .25 .06 -15 COMMON MODE REJECTION, CMR (dB) 120 100 80 60 40 20 POWER SUPPLY REJECTION, PSR (dB) BIAS CURRENT COMMON MODE REJECTION POWER SUPPLY REJECTION 140 120 100 80 60 40 20 0 10 100 1K 10K .1M 1M 10M FREQUENCY, F(Hz) -VS +VS 5 45 65 85 105 25 CASE TEMPERATURE, TC (C) 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) INPUT NOISE VOLTAGE, en (nV/ Hz) 40 35 30 25 20 INPUT NOISE NORMALIZED QUIESCENT CURRENT, IQ (X) 1.6 1.5 1.4 QUIESCENT CURRENT 3 2.5 SETTLING TIME TIME, t (S) 2 1.3 1.2 1.1 1.0 .9 0 25 50 75 100 125 -25 CASE TEMPERATURE, TC (C) 1m 1.5 V NO LO AD 15 1 .5 10m AD 0 LO 10mV 1 O VN LO AD 10 10 100 1K 10K FREQUENCY, F (Hz) .1M 1 2 3 4 5 6 7 8 OUTPUT CHANGE FROM ZERO, VOLTS 0 APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com PA02 * PA02A 1 .3 .1 .03 .01 = 50 m W OPERATING CONSIDERATIONS HARMONIC DISTORTION GAIN = 1 LOAD = 10 GENERAL Please read the "General Operating Considerations" section which covers stability, supplies, heatsinking, mounting, current limit, SOA interpretation, and specification interpretation. Additional information can be found in the application notes. For information on the package outline, heatsinks, and mounting hardware, consult the "Accessory and Package Mechanical Data" section of the handbook. DISTORTION, THD (%) PO OUTPUT CURRENT FROM +V OR -VS (A) .003 PO PO W =5 = .5 W SAFE OPERATING AREA (SOA) The SOA curves combine the effect of all limits for this Power Op Amp. For a given application, the direction and magnitude of the output current should be calculated or measured and checked against the SOA curves. This is simple for resistive loads but more complex for reactive and EMF generating loads. The following guidelines may save extensive analytical efforts: 1. Under transient conditions, capacitive and dynamic* loads up to the following maximums are safe: 5.0 4.0 3.0 T T C TC C =2 E s AT 5 m ND WN ST t= CO DO DY SE AK EA E ST BR .001 100 300 1K 3K 10K 30K .1M .3M FREQUENCY, F (Hz) =7 5C C 2.0 1.5 1.0 0.7 0.5 0.3 0.2 =1 0 T 00 C =1 C 15 OUTPUT VOLTAGE, VO (V) PULSE RESPONSE VIN = 1V, tr = 100ns LOAD = 10 25 C TH 10 5 0 -5 ER MA L 2 3 5 7 10 15 20 25 30 40 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS -VO (V) -10 -15 VS 0 1 2 3 4 TIME, t (S) 5 .3 OUTPUT VOLTAGE, VO (V) PULSE RESPONSE VIN = .2V, tr = 50ns * 18V 15V 10V CAPACITIVE LOAD ILIM = 2A ILIM = 5A 2mF 0.7mF 10mF 2.2mF 25mF 10mF INDUCTIVE LOAD ILIM = 2A ILIM = 5A .2H 10mH .7H 25mH 5H 50mH .2 .1 0 -.1 -.2 -.3 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. 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 = 85C. SHORT TO VS SHORT TO VS C, L OR EMF LOAD COMMON 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 .5 1.0 TIME, t (S) 1.5 DELTA GAIN WITH LOAD, A (dB) 0 -.3 -.6 -.9 LOADING EFFECTS 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. IO = 150mA DEVICE MOUNTING IO = 400mA -1.2 -1.5 100 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. This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. PA02U REV. L FEBRUARY 1998 (c) 1998 Apex Microtechnology Corp. |
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