PA51 rn ee e PASIA APEX MICROTECHNOLOGY CORPORATION + APPLICATIONS HOTLINE 800 546-APEX (800-546-2739) FEATURES e WIDE SUPPLY RANGE +10 to +40V HIGH OUTPUT CURRENT +10A Peak SECOND SOURCEABLE OPASO1, 8785 * CLASS C OUTPUT Low Cost LOW QUIESCENT CURRENT 2.6mA APPLICATIONS DC SERVO AMPLIFIER MOTOR/SYNCHRO DRIVER VALVE AND ACTUATOR CONTROL DC OR AC POWER REGULATOR DESCRIPTION The PA5S1 and PA51A are high voltage, high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. Their complementary common emitter output stage is protected against transient inductive kickback and optimized for low frequency applications where crossover distortion is not critical. These amplifiers are not recom- mended for audio, transducer or deflection coil drive circuits. The safe operating area (SOA) is fully specified and can be observed for all operating conditions by selection of user programmable current limiting resistors. Both amplifiers are internally compensated for all gain settings. For continuous operation under load, mounting on a heatsink of proper rating is recommended. Do not use isolation washers! This hybrid integrated circuit utilizes thick film conductors, ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top performance. Ultrasoni- cally bonded aluminum wires provide reliable interconnec- tions at all operating temperatures. The 8-pin TO-3 package is electrically isolated and hermetically sealed. The use of com- pressible thermal washers and/or improper mounting torque will void the product warranty. Please see General Operating Considerations. EQUIVALENT SCHEMATIC QiA Aoi Q1B _@) a3 Al @ @ - a4 Ci = Q6B Q6A ADs O/+5V Ri DAC WW 4.16K O/6A Re 2.5K RS MOTOR CURRENT IS A FUNCTION OF Viqy 52 PROGRAMMABLE TORQUE CIRCUIT The linear relationship of torque output to current input of the modern torque motor makes this simple control circuit ideal for many material processing and testing applications. The sense resistor develops a feedback voltage proportional to motor current and the small signal properties of the Power Op Amp insure accuracy. With this closed loop operation, temperature induced impedance variations of the motor winding are auto- matically compensated. EXTERNAL CONNECTIONS APEX MICROTECHNOLOGY CORPORATION TEL 1602) 690-8600 FAX (602) 888-3329 + ORDERS (602) 690-8601 TELEX 170631 + APEX F.S.C. (602) 690-8606 E99PA51 PAS1A Fear MIS PECPIGATIONS ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +Vz to Vs 80v OUTPUT CURRENT, within SOA 10A POWER DISSIPATION, internal 97W INPUT VOLTAGE, differential V5 -3V INPUT VOLTAGE, common mode Vy TEMPERATURE, junction 200C. TEMPERATURE, pin solder -10s 300C. TEMPERATURE RANGE, storage -65 to +150C OPERATING TEMPERATURE RANGE, case 55 to +125C SPECIFICATIONS PASI PASIA PARAMETER TEST CONDITIONS? MIN TYP MAX | MIN TYP MAX | UNITS INPUT OFFSET VOLTAGE, initial T. = 25C +5 +10 +2 +5 mv OFFSET VOLTAGE, vs. temperature Full temperature range 10 +65 * +40 | pv/c OFFSET VOLTAGE, vs. supply To = 25C +35 * pv/V OFFSET VOLTAGE, vs. power Ty = 26C +20 * pv/w BIAS CURRENT, initial Ty = 25C +15 +40 * +20 nA BIAS CURRENT, vs. temperature Full temperature range : +.08 * nArc BIAS CURRENT, vs. supply To = 25C +.02 * nav OFFSET CURRENT, initial To = 25C +5 t12 42 +3 nA OFFSET CURRENT, vs. temperature Full temperature range .01 * nArc INPUT IMPEDANCE, common mode Ty = 25C 250 * MQ INPUT IMPEDANCE, differential To = 25C 10 * MQ INPUT CAPACITANCE Te = 25C 3 * pF COMMON MODE VOLTAGE RANGE? | Full temperature range 4V,-6 | Vo-3 * * v COMMON MODE REJECTION, DC* To = 25C, Voy = tVs -6V 70 110 80 * dB GAIN OPEN LOOP GAIN at 10Hz Full temp. range, full load 94 15 94 * dB GAIN BANDWIDTH PRODUCT @ 1Mbz| T, = 25C, full load 1 * MHz POWER BANDWIDTH Ty = 25C, Ig = BA, Vo = 40Vop 10 16 . kHz PHASE MARGIN Full temperature range 45 , OUTPUT VOLTAGE SWING? Ty = 25C, Ig = 10A tVe-8 | tV5-5 * * V VOLTAGE SWING? Full temp. range, ly = 4A tV~6 | V54 * v VOLTAGE SWING? Full temp. range, Ip = 68MA V5-6 * Vv CURRENT Ty = 25C +10 * A SETTLING TIME to .1% T, = 25C, 2V step 2 * us SLEW RATE To = 25C, R, = 62 1.0 26 . * Vips CAPACITIVE LOAD, unity gain Full temperature range 1.5 * nF CAPACITIVE LOAD, gain > 4 Full temperature range SOA * POWER SUPPLY VOLTAGE Full temperature range +10 28 +36 * +34 +40 v CURRENT, quiescent Te = 25C 2.6 10 * . mA THERMAL RESISTANCE, AC, junction to case* F > 60Hz 1.0 1.2 * cw RESISTANCE, DC, junction to case F < 60Hz 1.5 18 * * C/W RESISTANCE, junction to air 30 . C/W TEMPERATURE RANGE, case Meets full range specifications 25 +85 55 +125 me} NOTES: * The specification of PA51A is identical to the specification for PA51 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 specified under the TYP rating applies unless otherwise noted as a test condition. 3. +V, and V, denote the positive and negative supply rail respectively. Total V, is measured from +V, to Vs. 4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. CAUTION 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 8574t USA * APPLICATIONS HOTLINE: | (800) 546-2739 E100TYPICAL PERFORMANCE GRAPHS PAS1 PASIA POWER DERATING Q oa oe o 2 o - 3 PA51] PASIA nN a INTERNAL POWER DISSIPATION, P(W) 0 2 50 75 100 TEMPERATURE, T (C) SMALL SIGNAL RESPONSE 0 12 @ 100 2 80 2 60 oO 5, 40 3 ad z Ld 5 0 -20 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) PULSE RESPONSE 8 GAIN = +1 252 S 6 $4 o 2 < Fo 8 7-2 a a -4 2 5 8 0 2 4 6 8 10 12 TIME, (us) HARMONIC DISTORTION Vg = 36V 3 LR. =42 GAIN = 10 om eo, os e a DISTORTION (%) a te is eo, Q wo 01 30 100 300 1K 3K FREQUENCY, F (Hz) 125 150 PHASE, 9() t 10K 30K OUTPUT VOLTAGE SWING S55 > va & 5.6 ore a 1c 7 2 3 eee g ae fat y tole | gH a aNO Or oO 2 35 a wi | *c 2 3.0 LT 10 Boe 925 ao 2 10 ~1 -1 -2 _ are o COMMON MODE REJECTION, CMR (dB) NORMALIZED QUIESCENT CURRENT, !q (X) 4 6 QUTPUT CURRENT, Ig (A) PHASE RESPONSE 50 80 10 o 10 FREQUENCY, F (Hz) 20 COMMON MODE REJECTION 60 40 20 = 10.100 1K 10K .1M 1M FREQUENCY, F (Hz) QUIESCENT CURRENT 1.6 14 1.2 To vse 1.0 To = 125C 8 To = 55C 4 20 30 40 50 60 70 80 TOTAL SUPPLY VOLTAGE, Vg (V) 100 1K 10K .1M 1M 10M CURRENT LIMIT Re =.120 CURRENT LIMIT, Iiy (A) 0 25 OQ 2 50 75 100 CASE TEMPERATURE, Te (C) POWER RESPONSE sa oO Vg = 40V oOo an mo OC RL =82 tr o ao R, =32 OUTPUT VOLTAGE, Vo (Vee) g 3 7 10K 20K 30K 50K 70K FREQUENCY, F (Hz) BIAS CURRENT nd, ~~ > no np wo a oO nh on NORMALIZED BIAS CURRENT, Ig (X) 125 1M 7 50-25 0 25 50 75 100 125 CASE TEMPERATURE, Tg (C) _ INPUT NOISE Bi00 = 2 70 m QO Oo Ww oO INPUT NOISE VOLTAGE, V, = Os] 3 0 10 100 1K 10K FREQUENCY, F (Hz) 1M APEX MICROTECHNOLOGY CORPORATION TEL (602) 690-8600 FAX (602) 888-3329 ORDERS (602) 690-8601 TELEX 170631 APEX F.S.C. (602) 690-8606 E101PA51 PASIA OPERATING CONSIDERATIONS GENERAL Please read the General Operating Considerations sec- tion, which covers stability, supplies, heatsinking, mounting, current limit, SOA interpretation, and specification interpreta- tion. 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 output stage of most power amplifiers has three distinct limitations: 1. The current handling capability of the transistor geometry and the wire bonds. 2. The second breakdown effect which occurs whenever the simultaneous collector current and collector-emitter voltage exceeds specified limits. 3. The junction temperature of the output transistors. 10 7.0 5.0 3.0 2.0 1.5 1.0 0.7 0.5 0.3 OUTPUT CURRENT FROM +Vs5 OR -Vs (A) 0.2 5 7 10 15 20 30 40 50 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE Vz. Vo (V) 70 80 The SOA curves combine the effect of 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 exten- sive analytical efforts. 1. Under transient conditions, capacitive and dynamic* induc- tive loads up to the following maximums are safe: CAPACITIVE LOAD INDUCTIVE LOAD 1V, hn = DA ty =10A y= 5A y= 10A 40V 400uF 200uUF itmH 4.3mH 35V 800uF 400uF 20mH 5.0mH 30V 1,600uF 800uF 35mH 6.2mH 25V 5.0mF 2.5mF 50mH 15mH 20V 10mF 5.0mF 400mH 20mH 15V 20mF 10mF 100mH If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 8V below the supply rail with |,,, = 10A or 15V below the supply rail with lia = 5A while the amplifier is current limiting, the inductor should be capacitively coupled or the current limit must be lowered to meet SOA criteria. ** Second breakdown effect imposes no limitation but thermal limitations must still be observed. 2. The amplifier can handie any EMF generating or reactive load and short circuits to the supply rail or shorts to common if the current limits are set as follows at T, = 85C. SHORT TO +V, SHORT TO +V, C, L, OR EMF LOAD COMMON 45V 0.1A 1.3A 40V 0.2A 1.5A 35V 0.3A 1.6A 30V 0.5A 2.0A 25V 1.2A 2.4A 20V 1.5A 3.0A 15V 2.0A 4.0A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. 3. The output stage is protected against transient flyback. However, for protection against sustained, high energy flyback, external fast-recovery diodes should be used. CURRENT LIMIT Proper operation requires the use of two current limit resis- tors, connected as shown in the external connection diagram. The minimum value for Re, is .06 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. PASIU REV & SEPTEMBER [9 E102 1992 Apex Shcrotechnolegs Corp