PAO2 PAO2A APEX MICROTECHNOLOGY CORPORATION FEATURES HIGH POWER BANDWIDTH 350kHz HIGH SLEW RATE 20V/us e 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 DESCRIPTION The PAO2 and PAQ2A 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 recom- mended for use as unity gain followers. For continuous opera- tion 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 inter- connections at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. |sola- tion washers are not recommended. The use of compressible thermal washers and/or improper mounting torque will void the product warranty. Please see General Operating Consider- ations. EQUIVALENT SCHEMATIC ADI t(1) + (3) -(4) 4 02 * APPLICATIONS HOTLINE 800 546-APEX (800-546-2739) TYPICAL APPLICATION A7UF 16K [ow f i " 47UF 16K LOW INTERNAL LOSS MAXIMIZES EFFICIENCY Vehicular Sound System Power Stage When system voltages are low and power is at a premium, the PAO2 is anatural choice. The circuit above utilizes not only the feature of low internal loss of the PAOQ2, 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 protec- tion in the event of an output short circuit. EXTERNAL CONNECTIONS Rois APEX MICROTECHNOLOGY CORPORATION TEL (602) 690-8600 FAX (602) 888-3329 * ORDERS (602) 690-8601 TELEX 170631 * APEX F.S.C. (602) 690-8606 E13ABSOLUTE MAXIMUM RATINGS PAO2 PAO2A SPECIFICATIONS UTE MAXIMUM RATINGS SUPPLY VOLTAGE, +V, to -V5 38V ABSOL OUTPUT CURRENT, within SOA 5A POWER DISSIPATION, internal 48w INPUT VOLTAGE, differential +V,-5V INPUT VOLTAGE, common mode V5 -2V TEMPERATURE, pin solder - 10s 300C TEMPERATURE, junction! 150C TEMPERATURE RANGE, storage -65 to +150C OPERATING TEMPERATURE RANGE, case 55 to +125C SPECIFICATIONS PAo2 PAO2A PARAMETER TEST CONDITIONS? MIN TYP MAX | MIN TYP MAX | UNITS INPUT OFFSET VOLTAGE, initial Ty = 25C $5 +10 H 43 mV OFFSET VOLTAGE, vs. temperature Full temperature range +10 +50 * +25 wVPC OFFSET VOLTAGE, vs. supply Ty = 25C +10 * V/V OFFSET VOLTAGE, vs. power T. = 25C +6 * pV/W BIAS CURRENT, initial T, = 25C 50 200 25 100 pA BIAS CURRENT, vs. temperature Ty = 85C 200 * parc BIAS CURRENT, vs. supply Ty = 25C 01 * pA/V OFFSET CURRENT, initial Tp = 25C 25 100 15 50 pA OFFSET CURRENT, vs. temperature Ty = 85C 100 * pArC INPUT IMPEDANCE, DC T, = 25C 1000 * GQ INPUT CAPACITANCE Ty = 25C 3 * pF COMMON MODE VOLT. RANGES, Pos. | Full temperature range +Vs-6 | +V,-3 * * Vv COMMON MODE VOLT. RANGES, Neg. | Full temperature range ~Vz5 +6 | -V5 +5 * * V COMMON MODE REJECTION, DC Full temperature range 70 100 * * dB GAIN OPEN LOOP GAIN at 10Hz Te = 25C, 1kQ load 103 * dB OPEN LOOP GAIN at 10Hz Full temp. range, 10kQ load 86 100 * * dB GAIN BANDWIDTH PRODUCT at 1MHz] T, = 25C, 10Q load 4.5 * MHz POWER BANDWIDTH Ty = 25C, 102 load 350 * kHz PHASE MARGIN Full temp. range, 102 load 30 * OUTPUT VOLTAGE SWING? Ty = 25C, Ig = 5A, Ro. = .082 +V5-4 | +V3-3 * * v VOLTAGE SWING? Full temp. range, lo = 2A 4V5-2 |4V5-1.2 . * Vv CURRENT, peak T. = 25C 5 * A SETTLING TIME to .1% Ty = 25C, 2V step 6 * us SLEW RATE Ty = 25C 13 20 * . Vius CAPACITIVE LOAD Full temp. range, Ay > 10 SOA * HARMONIC DISTORTION P, = .5W, F = 1kHz, R, = 10Q .004 * %o SMALL SIGNAL rise/fall time R, = 10Q, Ay =1 100 * ns SMALL SIGNAL overshoot R, = 10Q, Ay =1 10 * % POWER SUPPLY VOLTAGE Futl temperature range 47 #15 +19 * . * Vv CURRENT, quiescent To = 26C 27 40 * * mA THERMAL RESISTANCE, AC junction to case* F > 60Hz 1.9 21 * * C/W RESISTANCE, DC junction to case F < 60Hz 24 2.6 * * C/W RESISTANCE, junction to air 30 * C/W TEMPERATURE RANGE, case Meets full range specifications ~25 +85 55 +125 S NOTES: * The specification of PAQ2A is identical to the specification for PAQ2 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. op The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test condition. +V, and V, denote ihe positive and negative supply rail respectively. Total V; is measured from +V, 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. 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. APEX MICROTECHNOLOGY CORPORATION + 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 + USA + APPLICATIONS HOTLINE: 1 (800) 540-2739 E14TYPICAL PERFORMANCE GRAPHS PAO2 PAO2ZA POWER DERATING = 50 a38 a = , a 5 40 > 3.0 & oO x 25 g g a F 2.0 cr 3 Ww 20 > FS 215 & e a 10 < 3 TeT, x 1.0 x e Ww 0 < wu S35 Z 0 2 50 75 100 125 150 TEMPERATURE, T (C) SMALL SIGNAL RESPONSE 0 0 OUTPUT VOLTAGE SWING CURRENT LIMIT 3.0 _ 25 <z 2 20 = 25 to 85C E S 2 15 5 & 1.0 c oc oS 0 -25 0 25 50 75 100 125 1 2 3 4 OUTPUT CURRENT, | (A) CASE TEMPERATURE, T, (C) PHASE RESPONSE POWER RESPONSE 421 ~ ~ | +V5|+|-Vs | = 36V z @100 #23 ~ 80 S18 z ui = 60 oO _ S < 4g |Lts 1+ IVs |= 30V & 40 a 9 ~ 10 ZS 20 EB = 2 a - So 2 7.8 -20 0 6 1 10 100 1K 10K .iM 1M 10M + 10 100 1K 10K .1M 1M 10M 1M 2M 3M 5M .7M 1M FREQUENCY, F (Hz) FREQUENCY, F (Hz) FREQUENCY, F (Hz) BIAS CURRENT = __ COMMON MODE REJECTION az POWER SUPPLY REJECTION = 256 @ 1420 @ 140 x z = a oc a+ fea = = D 120 Eo 5 100 PN e. z w 16 5 6 100 a = a 3 80 i 80 4 w w 2 w 60 am t 60 > a wu 1 8 & 40 a 40 = 2 z 20 x 2 = Q 06 2 20 5 (O -15 5 25 45 65 85 105 Q 4-10 100 1K 10K 1M 1M 10M @ 10 100 1K 10K .1K iM 10M CASE TEMPERATURE, T,(C) FREQUENCY, F (Hz) FREQUENCY, F(Hz) INPUT NOISE QUIESCENT CURRENT SETTLING TIME INPUT NOISE VOLTAGE, en (nV/VHz) 10 100 1K 10K FREQUENCY, F (Hz) 1M NORMALIZED QUIESCENT CURRENT, Ig (X) 2 -25 CASE TEMPERATURE, Te (C) 2 oe w Ro N omy 40 0 0 2 50 75 100 125 1 2 3 4 5 6 7 8 OUTPUT CHANGE FROM ZERO, VOLTS APEX MICROTECHNOLOGY CORPORATION TEL (602) 690-8600 FAX 602) 888-3329 + ORDERS (602) 690-8601 + TELEX 170631 + APEX F.S.C. (602) 690-8606 E15PAO2 PAQ2A OPERATING CONSIDERATIONS HARMONIC DISTORTION GAIN = 1 3 [LOAD = 1022 x oO 4 z Zz B03 Oo 01 e Q 5.003 .001 100 300 1K 3K 10K 30K .1M.3M FREQUENCY, F (Hz) 15 PULSE RESPONSE ~ Vin = 1V, tr = 100ns = LOAD = 10 5 10 > 6 5 < 5 o 0 > 5 2-5 & ~~ 0-10 15 0 1 2 3 4 5 TIME, t (uS) 3 PULSE RESPONSE Vin = -2V. tr = 50ns S 2 Oo > 4 WwW 2 Fe Oo a 3 > po = a 5 ~2 5 -3 0 5 10 15 TIME, t (uS) 0 LOADING EFFECTS ao zB = -3 a Ig = 150mA So -6 , a x= E Ss -9 Zz & Lett ]] io = 400mA qt a a O-15 100 1K 10K 1M FREQUENCY, F (Hz) 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. SAFE OPERATING AREA (SOA) The SOA curves combine the effect of all limits for this Power Op Amp. For a given applica- tion, the direction and magni- tude of the output current should be calculated or measured and checked against the SOA curves. This is simple for resis- tive 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 maxi- mums are safe: CAPACITIVE LOAD rhe 2 BH mo 0O o 2 w og ie} 2 3 5 7 10 UPPLY TO OUTPUT DIFFERENTIAL VOLTAGE Vg ~Vg (V) 15 20 2530 40 qm OUTPUT CURRENT FROM +V OR =Vg (A) oo on ~ INDUCTIVE LOAD Vz, lia = 2A lin = 5A lum = 2A lim = 5A 18V 2mF 0.7mF 2H 10mH 15V 10mF 2.2mF 7H 25mH 10V 25mF 1OmF 5H 50mH If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 8V below the supply rail with |... = 5A, or 17V below the supply rait with [|,, = 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 Ty = 85C. SHORT TO +V, SHORT TO iVs C, LOR EMF LOAD COMMON 18V 5A 1.7A 16V JA 2.8A 10V 1.6A 4.2A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. CURRENT LIMIT Proper operation requires the use of two current limit resistors, connected as shown in the external connection diagram. The minimum value for R, 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. DEVICE MOUNTING The case (mounting flange) is electrically isolated and should be mounted directly to a heatsink with thermal compound. Screws with Belville spring washers are recom- mended to maintain positive clamping pressure on heatsink mounting surfaces. Long periods of thermal cycling can loosen mounting screws and increase thermal resis- tance. 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. E16 PAU2U REV. J OCTOBER 1993. 1993 Apea Microtechnology Corp