Av OW ae).\ APEX MICROTECHNOLOGY CORPORATION + APPLICATIONS HOTLINE 800 546-APEX (800-546-2739, FEATURES GAIN BANDWIDTH PRODUCT 4MHz TEMPERATURE RANGE -55 to +125C (PA10A) e EXCELLENT LINEARITY Class A/B Output WIDE SUPPLY RANGE +10V to +50V HIGH OUTPUT CURRENT +5A Peak APPLICATIONS MOTOR, VALVE AND ACTUATOR CONTROL MAGNETIC DEFLECTION CIRCUITS UP TO 4A POWER TRANSDUCERS UP TO 100kHz TEMPERATURE CONTROL UP TO 180W * PROGRAMMABLE POWER SUPPLIES UP TO 90V * AUDIO AMPLIFIERS UP TO 6OW RMS DESCRIPTION The PA10 and PAI0A are high voltage, high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. Their complementary darlington emitter fol- lower output stages are protected against transient 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. Both amplifiers are internally compensated for all gain settings. For continuous operation under load, a heatsink of proper rating is recom- mended. This hybrid integrated circuit utilizes thick film (cermet) resistors, ceramic capacitors and semiconductor chips to maxi- mize reliability, minimize size and give top performance. Ultra- sonically bonded aluminum wires provide reliable interconnec- tions at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. The use of com- pressible isolation washers voids the warranty. EQUIVALENT SCHEMATIC @ ; Tr 77 Q2A De ar | Q2B8 a $ Qa 0) Went Qs wD | of ta Al 2s Q6A vee Aves @- i ) GC} TYPICAL APPLICATION R2A MW Vv V7 FIGURE 1. VOLTAGE-TO-CURRENT CONVERSION DC and low distortion AC current waveforms are delivered to a grounded load by using matched resistors (A and B sections) and taking advantage of the high common mode rejection of the PA10. Foldover current limit is used to modify current limits based on output voltage. When load resistance drops to 0, the current is limited based on output voltage. When load resistance drops to 0, the current limit is 0.79A resulting in an internal dissipation of 33.3 W. When output voltage increases to 36V, the current limit is 1.69A. Refer to Application Note 9 on foldover limiting for details. EXTERNAL CONNECTIONS TOP VIEW APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 FAX 15201 888-3329 ORDERS 1520) 690-8601 + EMAIL ProdLit@ TeamApes.com C87PA10 PA1OA ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +V, to Vs 100V OUTPUT CURRENT, within SOA 5A POWER DISSIPATION, internal 67W INPUT VOLTAGE, differential +V, -3V INPUT VOLTAGE, common mode tV, TEMPERATURE, pin solder - 10s 300C TEMPERATURE, junction 200C. TEMPERATURE RANGE, storage 65 to +150C OPERATING TEMPERATURE RANGE, case -55 to +125C SPECIFICATIONS PA10 PA1DA PARAMETER TEST CONDITIONS?5 MIN TYP MAX | MIN TYP MAX | UNITS INPUT OFFSET VOLTAGE, initial Ty, = 25C t2 +6 +1 +3 mV OFFSET VOLTAGE. vs. temperature Full temperature range +10 +65 * +40 nV OFFSET VOLTAGE. vs. supply Te = 25C +30 +200 * pvv OFFSET VOLTAGE. vs. power TT = 25C +20 . yVW BIAS CURRENT, initial T= 25C 12 30 10 20 nA BIAS CURRENT, vs. temperature Full temperature range +50 +500 * * parc BIAS CURRENT, vs. supply Te = 25C +10 * pAV OFFSET CURRENT, initial Ty = 25C +12 +30 +5 +10 nA OFFSET CURRENT, vs. temperature Full temperature range +50 * pArrG INPUT IMPEDANCE, DC Ty = 25C 200 " MQ INPUT CAPACITANCE Ty = 25C 3 . pF COMMON MODE VOLTAGE RANGE? | Full temperature range tV.-5 | +V5-3 . , v COMMON MODE REJECTION, DC? Full temp. range, Vou = +Vs -6V 74 100 . . dB GAIN OPEN LOOP GAIN at 10Hz 5 = 25C, 1KQ load 110 . dB OPEN LOOP GAIN at 10Hz Full temp. range, 15Q load 96 108 . . dB GAIN BANDWIDTH PRODUCT @ 1MHz | T, = 25C, 159 load 4 . MHz POWER BANDWIDTH Tz = 25C, 159 load 10 15 . * kHz PHASE MARGIN Full temp. range. 15& load 20 * OUTPUT VOLTAGE SWING? T, = 26C, lp = 5A V5-8 | +V5-5 +V,-6 * Vv VOLTAGE SWING? Full temp. range, Ip = 2A tV,-6 . v VOLTAGE SWING Full temp. range, |, = 80mA +V,-5 . Vv CURRENT, peak Te. = 25C 5 . A SETTLING TIME to .1% Ty = 25C, 2V step 2 . us SLEW RATE Ty, = 25C 2 3 , * Vius CAPACITIVE LOAD Full temperature range, Ay = 1 .68 * nF CAPACITIVE LOAD Full temperature range, Ay = 2.5 10 * nF CAPACITIVE LOAD Full temperature range, A, > 10 SOA . nF POWER SUPPLY VOLTAGE Full temperature range +10 +40 +45 * * +50 Vv CURRENT, quiescent Ty = 25C 8 15 30 . * * mA THERMAL RESISTANCE, AC, junction to case* T. =55 to +125C, F > 6OHz 1.9 21 . * C/W RESISTANCE, DC, junction to case Te = -55 to +125C 2.4 26 . * CAW RESISTANCE, junction to air T, = -55 to +125C 30 . CAW TEMPERATURE RANGE, case Meets full range specifications ) -25 +85 ~55 | +125 ae) NOTES: * to achieve high MTTF. The specification of PA10A is identical to the specification for PA10 in applicable calumn to the left. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation The power supply voitage for all tests is +40, unless otherwise noted as a test condition. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. 2. 3. +V; and -V, denote the positive and negative supply rail respectively. Total V, is measured from +V, to Vs. 4 5. Full temperature range specifications are guaranteed but not 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. APEX MICROTECHNOLOGY CORPORATION + 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 * USA * APPLICATIONS HOTLINE: | (800) 546-2739 cssGRAPHS ANE PA10 PA1LOA = POWER DERATING BIAS CURRENT CURRENT LIMIT = 70 S25 3.5 o ~e 5 60 5 2.2 q 30 cz < < 50 & 1.9 225 on 5 e 240 o 1.6 Ss 2.0 a 2 a < _ tu 30 g 13 615 z PAIO} PA1OA oO 4 a 20 we 4.0 f 10 z Z 5 Z10 T=T, = 7 os Ho 4 0 Z 0 20 40 60 80 100 120 140 50-25 0 25 50 75 100 125 -0 -25 0 25 50 75 100 125 TEMPERATURE, T (C) CASE TEMPERATURE, T; (C) CASE TEMPERATURE. T(C) SMALL SIGNAL RESPONSE D PHASE RESPONSE POWER RESPONSE 20 ~ l+Vgh + I-V5} = 100V 100 -30 & 3 z l4Vg 1 + I-Vs 1 = 80 < 80 -60 2 Zz < ui = 60 2 ~90 G Go ui < & 40 2 420 a 8 = g l+Vg1 + EV, | = 30V > ~150 b he a Oo -180 5 3 -20 -210 4.6 1 10 100 1K ft 1M 1M 10M 0 10 100 1K 10K 1M 1M 10M 10K 20K 30K 50K 70K .1M FREQUENCY, F (Hz) FREQUENCY, F (Hz) FREQUENCY, F (Hz) B i909 COMMON MODE REJECTION PULSE RESPONSE _~ INPUT NOISE 3 a a4 = Pa oc > a Vv, = #5V.t, =1 S 3 100 = 6 1 2 z - 4 + = 80 ul : ul 60 Eo 5 c 9 5 3 40 5? 2 nO : 3 2 6 20 O-~ E = 5 5 0 -38 a 8 0 100 4 1M 1M 0 2 4 6 8 10 12 = 10 -100 1K 10K 1M FREQUENCY. F (Hz) TIME, t (us) FREQUENCY, F (Hz) HARMONIC DISTORTION = QUIESCENT CURRENT OUTPUT VOLTAGE SWING 16 Ss 6 ~ a L Ay =10 z >~ LY 1b Vs =238V Wis C a eo ZZ A. =82 x 122 3 1020 | x 3 312 2g a yA 5 B 5. 22 5 4Nete re ef 5 1.0 c & Xc & @ 7, = 88C a 3 fe | io 5 7 oG @ .03 5 8 NI << 2 wa a +o 95" a 7, = 125) w > 27 01 6 8 al - <q a 003 = 4 Q1 100 300 1K 3K 10K 30K .1M 40 50 60 70 80 90 100 0 4 2 3. 4 5 FREQUENCY, F (Hz) S TOTAL SUPPLY VOLTAGE, Vs {V) OUTPUT CURRENT, I, (A) APEX MICROTECHNOLOGY CORPORATION + TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS 1520) 690-8601 * EMAIL ProdLit@TeamApex.com cs9PA10 PA1OA OPERATING GENERAL Please read the General Operating Considerations section, which covers stability, supplies, heatsinking, mounting, current limit, SOA interpretation, and specification interpretation. Addi- tional 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 data book. 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. steady state Nz &, 4 3. The junction temperature of the output transistors. Zz 50 2 Py 0. 1 3.0 Ng, . A, S, 5 vo tay on 2 2.0 is sO 1. 8g6 = 5 % rel Xe 9 = 79) Co ir 1.0 Sc Mo 5 oy a 7 S oc oc > oO id wa) a Ee 2 5 10 15 20 25 30 35 40 50 60 70 80 100 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V5 -Vo (V) The SOA curves combine the effect of these limits. 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. However, the following guide- lines may save extensive analytical efforts. 1. Capacitive and dynamic* inductive loads up to the following maximum are safe with the current limits set as specified. CAPACITIVE LOAD INDUCTIVE LOAD *V, lng = 2A ly = 5A Iw = 2A My = 5A 50V 80uF 75uF 55mH 7.5mH 40V 250uF 150uF 150mH 11mH 35V 500uF 250uF 200mH 15mH 30V 1,200nF 500uF 250mH 24mH 25V 4,000uF 1,600uF 400mH 38mH 20V 20,000uF 5,000uF 1,500mH 75mH 15V 25,000uF 100mH If the inductive load 1s driven near steady state conditions, allowing the output voltage to drop more than 8V below the supply rail with |, = 5A or 20V below the supply rail with I... = 2A while the amplifier 1s current limiting, the inductor must 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 handle any EMF generating or reactive ioad and short circuits to the supply rail or shorts to common if the current limits are set as follows at T, = 85C: CONSIDERATIONS SHORT TO +V, SHORT TO iV, C, L, OR EMF LOAD COMMON 50V .26A B44 40V .38A 141A 35V 49A 1.2A 30V .65A 1.4A 25V .B4A 1.7A 20V 141A 2.2A 15V 1.4A 2.9A These simplitied limits may be exceeded with further analysis using the operat- ing conditions for a specific application. 3. The output stage is protected against transient flyback. How- ever, for protection against sustained. high energy flyback, external fast-recovery diodes should be used. CURRENT LIMITING To use standard current limiting, leave pin 7 open and proceed per General Operating Considerations section of the handbook, where initial setting and variation with temperature are described. Foidover action is described in detail in Application Note 9. For certain applications, foldover protection allows for increased output current as the output of the Power Op Amp swings close to the supply rail. This function can be achieved by connecting pin 7 directly or through a resistor to ground, and controlled by the following equation: .28V0 20 + Rro Re, + .01 65 + (1) ti = Where: lum is the current limit, in Amps, at a given output voltage Vo. Reo is the current foldover resistor pin 7 to ground in KQ. Re, is the current limit resistor in Q. Vo is the instantaneous output voltage in V.* The basic equation assumes V. and the current carrying supply are of the same polarity. If these polarities differ, assign V, a negative value. **,01Q = wire bond and pin resistance to R,., connections. PROCEDURE 1. Select R., to provide a safe current limit at V, = 0: Re, (Q) = (65/1) 01 (2) 2. Find the current limit for the maximum output voltage swing and pin 7 connected to ground/common: 28V5 20 Re, + .01 This is the highest current limit possible at maximum output. It may be decreased without affecting the short circuit current limit by putting a resistor in series with pin 7 to ground. 65 + (3) haw = The following equation can be used to calculate Rep (KQ) using a lower current limit: .28V5 Rep = lw (Ro, + -01) .65 3. To calculate the current limit at any output voltage (V,), use equation one. If Vo is of opposite polarity to the current carrying supply, assign V. a negative value and check the calculated current against the SOA graph. -20 (4) PAIOL REV | NOVEMBER 1994 c90 1994 Apex Microteehnctagy Corpaw aell APEX MICROTECHNOLOGY CORPORATION += APPLICATIONS HOTLINE 800 546 APEX (800-546-2739) SG PARAMETER SYMBOL | TEMP. |POWER | TEST CONDITIONS MIN MAX | UNITS 1 Quiescent current Io 25C +40V | Vy = 0, Ay = 100, Re, = 12 30 mA 1 Input offset voltage Vos 25C +40V_ | V,, = 0, Ay = 100 +6 mV 1 Input offset voltage Vos 25C +10V | Vy =0. Ay = 100 +12 mV 1 Input offset voltage Vog 25C t+45V | Viy = 0, Ay = 100 +7 mV 1 Input bias current. +IN tl, 25C +40V Vin =O +30 nA 1 Input bias current, -IN l 25C +40V Vin = 0 +30 nA 1 Input offset current log 25C +40V | Viy=0 +30 nA 3 Quiescent current Ig ~55C | +40V | Vy =0, Ay = 100, Re, = 12 75 mA 3 Input offset voltage Vos ~55C | +40V Vin = 0, Ay = 100 #11.2 mv 3 Input offset voltage Ves -55C | +10V Vin = 0, Ay = 100 417.2 mV 3 Input offset voltage Vos 55C | +45V Vig = 0, Ay = 100 12.2 mV 3. Input bias current, +IN tls 55C | +40V Vin = 0 +115 nA 3 Input bias current, -IN -ls -55C | +40V | Vy=0 +115 nA 3 Input offset current los -55C | +40V Vin =O +115 nA 2 Quiescent current lo 125C | +40V | Vy=0. Ay = 100, Ap, = .12 30 mA 2 Input offset voltage Vos 125C | +40V | Vy=0, Ay = 100 412.5 mV 2 Input offset voltage Vos 125C | +10V Vin = 0, Ay = 100 +18.5 mV 2 Input offset voltage Vos 125C | +45V Vin = 0, Ay = 100 413.5 mV 2 Input bias current, +IN +, 125C | +40V | V,y=0 +70 nA 2 Input bias current, -IN -ls 125C | +40V Vin =O +70 nA 2 Input offset current log 125C | +40V Vin=O +70 nA 4 Output voltage. I, = 5A Vo 25C | +18V | R, =2.070 10 Vv 4 Output voltage, lp = 80mMA Vo 25C +45V R, = 500Q 40 v 4 Output voltage, lp =2A Vo 25C +30V R, = 120 24 v 4 Current limits lo 25C | +17V | R= 120, Rg. = 12 6 89 A 4 Stability/noise Ey 25C | +40V | R, = 5000, A, = 1, C, = .68nF 1 mV 4 Slew rate SR 25C +40V R, = 5002 2 10 V/us 4 Open loop gain Ao. 25C +40V R, = 5002, F = 10Hz 96 aB 4 Common mode rejection CMR 25C +15V R, = 500, F = DC, Voy = +9V 74 dB 6 Output voltage, |, = 5A Vo ~55C | +16V R, = 2.072 10 Vv 6 Output voltage, |, = 80mMA Vo 55C | +45V R, = 5002 40 v 6 Output voltage, ig = 2A Vo -55C | +30V R, = 120 24 v 6 = Stability/noise Ey -65C | +40V R, = 5002, A, = 1, C, = .68nF 1 mV 6 Slew rate SR -55C | +40V R, = 5002 2 10 Vis 6 Open loop gain Aa -55C | +40V R, = 500Q, F = 10Hz 96 db 6 Common mode rejection CMR -85C | +15V R, = 500, F = DC, Voy = t9V 74 dB 5 Output voltage, Ip = 3A Vo 125C [+14.3V | R, = 2.072 6.3 v 5 Output voltage, I, = 80MA Vo 125C | +45V R, = 50022 40 Vv 5 Qutput voltage, I, = 2A Vo 125C | +30V R, = 120 24 Vv 5 Stability/noise Ey 125C | +40V R, = 500Q, Ay = 1, C, = .68nF 1 mV 5 Slew rate SR 125C | +40V R, = 5002 2 10 Vius 5 Open loop gain Aa. 125C | +40V | R, = 5000, F = 10Hz 96 dB 5 Common mode rejection CMR 125C | +15V R, = 500, F = DC, Vey = 9V 74 dB BURN IN CIRCUIT foKe * These components are used to stabilize device due to poor high frequency characteristics of burn in board, ae Input signals are caiculated to result in internal power dissipation of approximately 2.1W at case temperature = 125C. PALOMU REV J MAY 1996 1996 Apex Microrechnology Corp c91