pa13 ? PA13A pa13u 1 pa13, PA13A features ? low thermal resistance 1.1c/w ? current foldover protection ? excellent linearity class a/b output ? wide supply range 10v to 45v ? high output current up to 15a peak applications ? motor, valve and actuator control ? magnetic deflection circuits up to 10a ? power transducers up to 100khz ? temperature control up to 360w ? programmable power supplies up to 90v ? audio amplifiers up to 120w rms equivalent schematic 12 2 1 5 9 3 7 a1 d1 q1 q4 q3 q5 c1 q2a q2b q6b q6a 4 11 10 6 8 power operational amplifier pa13 ? PA13A p r o d u c t i n n o v a t i o n f r o m description the pa13 is a state of the art high voltage, very high output current operational amplifer designed to drive resistive, inductive and capacitive loads. for optimum linearity, especially at low levels, the output stage is biased for class a/b operation using a thermistor com - pensated base-emitter voltage multiplier circuit. the safe operating area (soa) can be observed for all op - erating conditions by selection of user programmable current limiting resistors. for continuous operation un - der load, a heatsink of proper rating is recommended. the pa13 is not recommended for gains below C3 (in - verting) or +4 (non-inverting). this hybrid integrated circuit utilizes thick flm (cermet) resistors, ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top per - formance. ultrasonically bonded aluminum wires pro - vide reliable interconnections at all operating temper - atures. the 12-pin power sip package is electrically isolated. copyright ? cirrus logic, inc. 2010 (all rights reserved) www.cirrus.com mar 2010 apex ? pa13revq 1 2 3 4 5 6 7 8 9 10 11 12 Cin +in output f.o. Cv +v Cc l +c l Cr cl +r cl s s 12-pin sip package style dp formed leads avaliable see package style ee external connections p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A 2 pa13u the exposed substrate contains beryllia (beo). do not crush, machine, or subject to temperatures in excess of 850c to avoid generating toxic fumes. caution parameter symbol min max units supply voltage, +v s to -v s 100 v output current, within soa 15 a power dissipation, internal 135 w input voltage, differential -37 37 v input voltage, common mode -v s v s v temperature, pin solder, 10s max. 260 c temperature, junction (note 3) 175 c temperature range, storage ?40 85 c operating temperature range, case ?25 85 c 1. characteristics and specifications absolute maximum ratings C pa13/PA13A parameter test condi - tions 2,5 pa13 PA13A units min typ max min typ max input offset voltage, initial 2 6 1 4 mv offset voltage vs. temp full temp range 10 65 * 40 v/c offset voltage vs. supply 30 200 * * v/v offset voltage vs. power 20 * v/w bias current, initial 12 30 10 20 na bias current, vs. temp full temp range 50 500 * * pa/c bias current, vs. supply 10 * pa/v offset current, initial 12 30 5 10 na offset current, vs. temp full temp range 50 * pa/c input impedance, dc 200 * m? input capacitance 3 * pf common mode voltage range (note 4) full temp range v s - 5 v s - 3 * * v common mode rejection, dc full temp range, v cm = v s C 6v 74 100 * * db gain open loop gain @ 10hz 1k? load 110 * db open loop gain @ 10hz full temp range, 8? load 96 108 * * db gain bandwidth product @ 1mhz 8? load 4 * mhz power bandwidth 8? load 13 20 * * khz phase margin, a v = +4 full temp range, 8? load 20 * specifications p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A pa13u 3 parameter test condi - tions 2,5 pa13 PA13A units min typ max min typ max output voltage swing (note 4) pa13 = 10a, PA13A = 15a v s - 6 * v voltage swing (note 4) i o = 5a v s - 5 * v voltage swing (note 4) full temp range, i o = 80ma v s - 5 * v current, peak 10 15 a settling time to 0.1% 2v step 2 * s slew rate 2.5 4 * * v/s capacitive load full temp range, a v = 4 1.5 * nf capacitive load full temp range, a v > 10 soa * power supply voltage full temp range 10 40 45 * * * v current, quiescent 25 50 * * ma thermal resistance, ac, junction to case (note 5) t c = C55 to +125c, f > 60hz 0.6 0.7 * * c/w resistance, dc, junction to case t c = C55 to +125c 0.9 1.1 * * c/w resistance, dc, junction to air t c = C55 to +125c 30 * c/w temperature range, case meets full range specifcation -25 +85 * * c notes: 1. (all min/max characteristics and specifcations are guaranteed over the specifed operating condi - tions. typical performance characteristics and specifcations are derived from measurements taken at typical supply voltages and t c = 25c). 2. long term operation at the maximum junction temperature will result in reduced product life. derate power dissipation to achieve high mttf. * the specifcation of PA13A is identical to the specifcation for pa13 in the applicable column to the left 3. the power supply voltage for all tests is 40, unless otherwise noted as a test condition. 4. +v s and Cv s denote the positive and negative supply rail respectively. total v s is measured from +v s to Cv s . 5. rating applies if the output current alternates between both output transistors at a rate faster than 60hz. 6. full temperature range specifcations are guaranteed but not 100% tested. p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A 4 pa13u power rating not all vendors use the same method to rate the power han - dling capability of a power op amp. apex precision power rates the internal dissipation, which is consistent with rating methods used by transistor manufacturers and gives conser - vative results. rating delivered power is highly application dependent and therefore can be misleading. for example, the 135w internal dissipation rating of the pa13 could be ex - pressed as an output rating of 260w for audio (sine wave) or as 440w if using a single ended dc load. please note that all vendors rate maximum power using an infnite heatsink. thermal stability apex precision power has eliminated the tendency of class a/b output stages toward thermal runaway and thus has vastly increased amplifer reliability. this feature, not found in most other power op amps, was pioneered by apex preci - sion power in 1981 using thermistors which assure a negative temperature coeffcient in the quiescent current. the reliability benefts of this added circuitry far outweigh the slight increase in component count. typical performance graphs Cv = l * 1 t yoke driver: 47f .1f .1f 47f C22v +73v r 1k r .2 c 50pf 2.5v p-p r 2k 11,12 2 1 5,6 3 r .5 7.8mh 4 5ap-p d f cl+ f s high current asymmetrical supply 7,8 9,10 r .2 clC pa13 typical application C50 0 100 .7 1.9 2.2 bias current 1.3 .4 10 100 10k .1m frequency, f (hz) input noise voltage, v n (nv/hz) 1 100 10m frequency, f (hz) C20 0 60 120 small signal response open loop gain, a (db) 20 40 80 100 1 100 .1m 10m C210 C150 C60 0 phase response C90 C30 10k 20k 50k .1m frequency, f (hz) 4.6 output voltage, v o (v p-p ) 100 1k 3k .1m frequency, f (hz) .003 .3 3 harmonic distortion distortion, (%) .01 .1 1 40 100 total supply voltage, v s (v) .4 .6 1.6 quiescent current normalized, i q (x) .8 1.4 0 output current, i o (a) output voltage swing voltage drop from supply (v) 1 10k frequency, f (hz) 0 common mode rejection common mode rejection, cmr (db) 40 80 120 .1m 10 100 0 time, t (s) pulse response output voltage, v o (v) C50 C25 50 100 case temperature, t c (c) 0 15.0 current limit current limit, i lim (a) 12.5 300 10k 30k 1 input noise 1k 10 20 30 1k C25 25 50 75 1.6 power response 30k 50 60 70 80 90 1.2 0 25 75 5.0 7.5 -8 10 1k 10k .1m 1m 10 10k 1m frequency, f (hz) phase, () normalized bias current, i b (x) 2.5 10.0 1k 1m 20 60 100 2 4 6 8 10 12 -6 -4 -2 0 2 4 6 8 70k 6.8 10 15 22 32 46 68 100 .03 1.0 125 1.0 125 17.5 case temperature, t c (c) C180 C120 40 50 70 100 2.5 3 6 9 12 15 2 3 4 5 6 r cl = .18, r fo = 0 r cl = .06, r fo = v o = 0 v o = 24v v o = 0 v o = C24v | +v s | + | Cv s | = 100v | +v s | C | Cv s | = 80v | +v s | + | Cv s | = 30v v in = 5v, t r = 100ns p o = 100mw t c = C25c p o = 4w a v =10 v s = 37v r l = 4 p o = 120w t c = 25c t c = 85c t c = 125c Cv o +v o 0 20 40 60 80 100 120 case temperature, t c (c) 0 20 60 100 power derating internal power dissipation, p (w) 40 140 140 80 120 pa13 p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A pa13u 5 C50 0 100 .7 1.9 2.2 bias current 1.3 .4 10 100 10k .1m frequency, f (hz) input noise voltage, v n (nv/hz) 1 100 10m frequency, f (hz) C20 0 60 120 small signal response open loop gain, a (db) 20 40 80 100 1 100 .1m 10m C210 C150 C60 0 phase response C90 C30 10k 20k 50k .1m frequency, f (hz) 4.6 output voltage, v o (v p-p ) 100 1k 3k .1m frequency, f (hz) .003 .3 3 harmonic distortion distortion, (%) .01 .1 1 40 100 total supply voltage, v s (v) .4 .6 1.6 quiescent current normalized, i q (x) .8 1.4 0 output current, i o (a) output voltage swing voltage drop from supply (v) 1 10k frequency, f (hz) 0 common mode rejection common mode rejection, cmr (db) 40 80 120 .1m 10 100 0 time, t (s) pulse response output voltage, v o (v) C50 C25 50 100 case temperature, t c (c) 0 15.0 current limit current limit, i lim (a) 12.5 300 10k 30k 1 input noise 1k 10 20 30 1k C25 25 50 75 1.6 power response 30k 50 60 70 80 90 1.2 0 25 75 5.0 7.5 -8 10 1k 10k .1m 1m 10 10k 1m frequency, f (hz) phase, () normalized bias current, i b (x) 2.5 10.0 1k 1m 20 60 100 2 4 6 8 10 12 -6 -4 -2 0 2 4 6 8 70k 6.8 10 15 22 32 46 68 100 .03 1.0 125 1.0 125 17.5 case temperature, t c (c) C180 C120 40 50 70 100 2.5 3 6 9 12 15 2 3 4 5 6 r cl = .18, r fo = 0 r cl = .06, r fo = v o = 0 v o = 24v v o = 0 v o = C24v | +v s | + | Cv s | = 100v | +v s | C | Cv s | = 80v | +v s | + | Cv s | = 30v v in = 5v, t r = 100ns p o = 100mw t c = C25c p o = 4w a v =10 v s = 37v r l = 4 p o = 120w t c = 25c t c = 85c t c = 125c Cv o +v o 0 20 40 60 80 100 120 case temperature, t c (c) 0 20 60 100 power derating internal power dissipation, p (w) 40 140 140 80 120 pa13 general please read application note 1 "general operating considerations" which covers stability, supplies, heat sinking, mounting, current limit, soa interpretation, and specifcation interpretation. visit www.cirrus.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selec - tion; apex precision powers complete application notes library; technical seminar workbook; and evaluation kits. safe operating area (soa) the output stage of most power amplifers 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 volt - age exceeds specifed limits. 3. the junction temperature of the output transistors. 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. however, the following guidelines may save extensive analytical efforts. t c = 25c t c = 85c t = 0.5ms t = 5ms t = 1ms thermal steady state soa 20 50 70 90 40 30 10 supply to output differential voltage, v s - v o (v) 15 .6 .4 10 6.0 4.0 2.0 3.0 1.0 output current from +v s or -v s (a) second breakdown p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A 6 pa13u 1. capacitive and dynamic* inductive loads up to the following maximum are safe with the current limits set as specifed. capacitive load inductive load v s i lim = 5a i lim = 10a i lim = 5a i lim = 10a 50v 200f 125f 5mh 2.0mh 40v 500f 350f 15mh 3.0mh 35v 2.0mf 850f 50mh 5.0mh 30v 7.0mf 2.5mf 150mh 10mh 25v 25mf 10mf 500mh 20mh 20v 60mf 20mf 1,000mh 30mh 15v 150mf 60mf 2,500mh 50mh *if the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 12.5v be - low the supply rail with ilim = 10a or 27v below the supply rail with ilim = 5a while the amplifer is current limiting, the inductor must be capacitively coupled or the current limit must be lowered to meet soa criteria. 2. the amplifer can handle any emf generating or reactive load and short circuits to the supply rail or common if the current limits are set as follows at tc = 25c: short to v s short to v s c, l, or emf load common 45v .43a 3.0a 40v .65a 3.4a 35v 1.0a 3.9a 30v 1.7a 4.5a 25v 2.7a 5.4a 20v 3.4a 6.7a 15v 4.5a 9.0a these simplifed limits may be exceeded with further analysis using the operating conditions for a specifc applica - tion. current limiting refer to application note 9, "current limiting", for details of both fxed and foldover current limit operation. visit the apex precision power web site at www.cirrus.com for a copy of power_design.exe which plots current limits vs. steady state soa. beware that current limit should be thought of as a 20% function initially and varies about 2:1 over the range of C55c to 125c. for fxed current limit, leave pin 4 open and use equations 1 and 2. r cl = 0.65 i cl (1) i cl = 0.65 r cl (2) where: i cl is the current limit in amperes. r cl is the current limit resistor in ohms. p r o d u c t i n n o v a t i o n f r o m ?
pa13 ? PA13A pa13u 7 for certain applications, foldover current limit adds a slope to the current limit which allows more power to be deliv - ered to the load without violating the soa. for maximum foldover slope, ground pin 4 and use equations 3 and 4. 0.65 + (v o * 0.014) i cl = r cl (3) 0.65 + (v o * 0.014) r cl = i cl (4) where: v o is the output voltage in volts. most designers start with either equation 1 to set r cl for the desired current at 0v out, or with equation 4 to set r cl at the maximum output voltage. equation 3 should then be used to plot the resulting foldover limits on the soa graph. if equation 3 results in a negative current limit, foldover slope must be reduced. this can happen when the output voltage is the opposite polarity of the supply conducting the current. in applications where a reduced foldover slope is desired, this can be achieved by adding a resistor (r fo ) between pin 4 and ground. use equations 4 and 5 with this new resistor in the circuit. v o * 0.14 i cl = r cl 0.65 + 10.14 + r fo (5) v o * 0.14 r cl = i cl 0.65 + 10.14 + r fo (6) where: r fo is in k ohms. 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 apex.support@cirrus.com. international customers can also request support by contacting their local cirrus logic sales representative. to fnd 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, indemnifcation, 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. cirrus owns the copyrights associated with the information contained herein and gives con - sent for copies to be made of the information only for use within your organization with respect to cirrus integrated circuits or other products of cirrus. this consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. certain applications using semiconductor products may involve potential risks of death, personal injury, or severe prop - erty or environmental damage (critical applications). cirrus products are not designed, authorized or warranted to be suitable for use in products surgically implanted into the body, automotive safety or security devices, life support prod - ucts or other critical applications. inclusion of cirrus products in such applications is understood to be fully at the cus - tomers risk and cirrus disclaims and makes no warranty, express, statutory or implied, including the implied warranties of merchantability and fitness for particular purpose, with regard to any cirrus product that is used in such a manner. if the customer or customers customer uses or permits the use of cirrus products in critical applications, customer agrees, by such use, to fully indemnify cirrus, its officers, directors, employees, distributors and other agents from any and all liability, including attorneys fees and costs, that may result from or arise in connection with these uses. cirrus logic, cirrus, and the cirrus logic logo designs, apex precision power, apex and the apex precision power logo designs are trademarks of cirrus logic, inc. all other brand and product names in this document may be trademarks or service marks of their respective owners. p r o d u c t i n n o v a t i o n f r o m ?
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