PA84, PA84A, PA84S PA84 • PPAA884 4• APA 8•4 PA A• P8A48S4S Power Operational Amplifiers FEATURES • HIGH SLEW RATE — 200V/µs • FAST SETTLING TIME — .1% in 1µs (PA84S) • FULLY PROTECTED INPUT — Up to ±150v • LOW BIAS CURRENT, LOW NOISE — FET Input • WIDE SUPPLY RANGE — ±15V to ±150V APPLICATIONS 8-PIN TO-3 PACKAGE STYLE CE • HIGH VOLTAGE INSTRUMENTATION • ELECTROSTATIC TRANSDUCERS & DEFLECTION 100K 50K • PROGRAMMABLE POWER SUPPLIES UP TO 290V +150V • ANALOG SIMULATORS 4.7K DESCRIPTION 10V 390pF DAC The PA84 is a high voltage operational amplifier designed 10K PA84 for output voltage swings up to ±145V with a dual supply or 290V with a single supply. Two versions are available. The INK JET •••••• new PA84S, fast settling amplifier can absorb differential input CONTROL •••••• •••••• overvoltages up to ±50V while the established PA84 and PA84A can handle differential input overvoltages of up to ±300V. Both –150V versions are protected against common mode transients and overvoltages up to the supply rails. High accuracy is achieved TYPICAL APPLICATION with a cascode input circuit configuration. All internal biasing The PA84 is ideally suited to driving ink jet control units (often is referenced to a zener diode fed by a FET constant current a piezo electric device) which require precise pulse shape source. As a result, the PA84 features an unprecedented sup- control to deposit crisp clear date or lot code information on ply range and excellent supply rejection. The output stage is product containers. The external compensation network has biased-on for linear operation. External phase compensation been optimized to match the gain setting of the circuit and the allows for user flexibility in obtaining the maximum slew rate. complex impedance of the ink jet control unit. The combination Fixed current limits protect these amplifiers against shorts of speed and high voltage capabilities of the PA84 form ink to common at supply voltages up to 150V. For operation into droplets of uniform volume at high production rates to enhance inductive loads, two external flyback pulse protection diodes the value of the printer. are recommended. However, a heatsink may be necessary to maintain the proper case temperature under normal operating EQUIVALENT SCHEMATIC conditions. 4 This hybrid integrated circuit utilizes a beryllia (BeO) sub- 2 strate, thick film resistors, ceramic capacitors and semiconduc- C1 tor chips to maximize reliability, minimize size and give top D1 performance. Ultrasonically bonded aluminum wires provide 3 Q3 Q1 Q2 reliable interconnections at all operating temperatures. The Q4 8-pin TO-3 package is hermetically sealed and electrically Q5 isolated. The use of compressible thermal isolation washers and/or improper mounting torque will void the product warranty. 8 Q6 Please see “General Operating Considerations”. Q8 Q9 Q7 C5* C4 Q10 Q11 EXTERNAL CONNECTION Q12B 1 5 Q12A -V * S +IN PHASE COMPENSATION Q13* 7 COMP8 6 GAIN CC RC * Q14* Q16 Q17 RC 5 –IN 110 51000npFF 220K0ΩΩ 6 Q15 TOP VIEW 100 50pF 20KΩ C6* D2 1000 none none 7 C 4 C BAL NOTES: 1 1. Phase Compensation required *Not included in PA84S. OUT 2 3 for safe operation. +V BAL 2. Input offset trimpot optional. S Recommended value 100KΩ. Copyright © Apex Microtechnology, Inc. 2014 OCT 2015 PwAw8w4.Ua pe xanalog .com 1 (All Rights Reserved) PA84U REVV

PA84 • PA84A • PA84S ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +V to –V 300V S S OUTPUT CURRENT, within SOA Internally Limited POWER DISSIPATION, internal at T = 25°C2 17.5W C INPUT VOLTAGE, differential PA84/PA84A1 ±300V INPUT VOLTAGE, differential PA84S ±50V INPUT VOLTAGE, common mode1 ±V S TEMPERATURE, pins for 10s max (solder) 350°C TEMPERATURE, junction2 175°C TEMPERATURE RANGE, storage –65 to +150°C OPERATING TEMPERATURE RANGE, case –55 to +125°C SPECIFICATIONS PA84/PA84S PA84A PARAMETER TEST CONDITIONS3 MIN TYP MAX MIN TYP MAX UNITS INPUT OFFSET VOLTAGE, initial T = 25°C ±1.5 ±3 ±.5 ±1 mV C OFFSET VOLTAGE, vs. temperature T = –25° to +85°C ±10 ±25 ±5 ±10 µV/°C C OFFSET VOLTAGE, vs. supply T = 25°C ±.5 ±.2 µV/V C OFFSET VOLTAGE, vs. time T = 25°C ±75 * µV/√kh C BIAS CURRENT, initial4 T = 25°C 5 50 3 10 pA C BIAS CURRENT, vs. supply T = 25°C .01 * pA/V C OFFSET CURRENT, initial4 T = 25°C ±2.5 ±50 ±1.5 ±10 pA C OFFSET CURRENT, vs. supply T = 25°C ±.01 * pA/V C INPUT IMPEDANCE, DC T = 25°C 1011 * Ω C INPUT CAPACITANCE T = –25° to +85°C 6 * pF C COMMON MODE VOLTAGE RANGE5 T = –25° to +85°C ±V –10 ±V –8.5 * * V C S S COMMON MODE REJECTION, DC T = –25° to +85°C 130 * dB C GAIN OPEN LOOP GAIN at 10Hz T = 25°C, R = ∞ 120 * dB C L OPEN LOOP GAIN at 10Hz. T = 25°C, R = 3.5KΩ 100 118 * * dB C L GAIN BANDWIDTH PRODUCT@ 1MHz T = 25°C, R = 3.5KΩ, R = 20KΩ 75 * MHz C L C POWER BANDWIDTH, high gain T = 25°C, R = 3.5KΩ, R = 20KΩ 250 180 * kHz C L C POWER BANDWIDTH, low gain T = 25°C, R = 3.5KΩ, R = 20KΩ 120 * kHz C L C OUTPUT VOLTAGE SWING5 T = 25°C, I = ±40mA ±V –7 ±V –3 * * V C O S S VOLTAGE SWING5 T = –25° to +85°C, I = ±15mA ±V –5 ±V –2 * * V C O S S CURRENT, peak T = 25°C 40 * mA C CURRENT, short circuit T = 25°C 50 * mA C SLEW RATE, high gain T = 25°C, R = 3.5KΩ, R = 20KΩ 200 150 * V/µs C L C SLEW RATE, low gain T = 25°C, R = 3.5KΩ, R = 2KΩ 125 * V/µs C L C SETTLING TIME .01% at gain = 100 T = 25°C, R = 3.5KΩ PA84S 2 µs C L SETTLING TIME .1% at gain = 100 R = 20KΩ, V = 2V step ONLY 1 µs C IN SETTLING TIME .01% at gain = 100 T = 25°C, R = 3.5KΩ PA84/84A 20 20 µs C L SETTLING TIME .1% at gain = 100 R = 20KΩ, V = 2V step 12 12 µs C IN POWER SUPPLY VOLTAGE T = –55°C to +125°C ±15 ±150 * * V C CURRENT, quiescent T = 25°C 5.5 7.5 * * mA C THERMAL RESISTANCE, AC, junction to case6 T = –55°C to +125°C, F > 60Hz 4.26 * °C/W C RESISTANCE, DC, junction to case T = –55°C to +125°C, F < 60Hz 6.22 8.57 * * °C/W C RESISTANCE, case to air T = –55°C to +125°C 30 * °C/W C TEMPERATURE RANGE, case Meets full range specifications –25 +85 * * °C NOTES: * The specification of PA84A is identical to the specification for PA84/PA84S in applicable column to the left. 1. Signal slew rates at pins 5 and 6 must be limited to less than 1V/ns to avoid damage. When faster waveforms are unavoidable, resistors in series with those pins, limiting current to 150mA will protect the amplifier from damage. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. 3. The power supply voltage for all tests is ±150V, unless otherwise noted as a test condition. 4. Doubles for every 10°C of temperature increase. 5. +V and –V denote the positive and negative power supply rail respectively. S S 6. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or CAUTION subject to temperatures in excess of 850°C to avoid generating toxic fumes. 2 PA84U

PA84 • PA84A • PA84S POWER DERATING CURRENT LIMIT OPEN LOOP GAIN SSIPATION, P (W)D117221..0555 T, I (mA)LIM 786000 OOP GAIN, A (dB) 402 RL = 3.5KΩ TTCC == 8255°°CC RNAL POWER DI 271..5505 CURRENT LIMI 435000 ELATIVE OPEN L –––246 TC = –25°C E R T 0 20 –8 N I 0 25 50 75 100 125 150 –55 –25 0 25 50 75 100 125 0 50 100 150 200 250 300 TEMPERATURE, T (°C) CASE TEMPERATURE, T (°C) TOTAL SUPPLY VOLTAGE, V (V) C S SMALL SIGNAL RESPONSE OUTPUT VOLTAGE SWING POWER RESPONSE 120 5.0 300 V) OPEN LOOP GAIN, A (dB)OL124806000000 RL = 3.5KΩRC /CRCC =/CC 2 0= 02ΩKΩ/1/05R0nC 0F/pCCF = 20KΩ/50pF LTAGE DROP SUPPLY, V –V (SO 232434......005055 T C= –T25 C°= C85°C T C= 25°C OUTPUT VOLTAGE, V (V)OPP 1123056000000 V =R C±/C1C5 =0 2V00Ω/10nRFC /CC =R 2CK /ΩC/C50 =0p 2F0 KΩ/50pF O S –20 V 1.5 15 1 10 100 1K 10K .1M 1M 10M 0 10 20 30 40 50 60 70 50K .1M .2M .3M .5M.7M1M FREQUENCY, F (Hz) OUTPUT CURRENT, I (mA) FREQUENCY, F (Hz) O SLEW RATE VS. COMP SLEW RATE VS. SUPPLY INPUT NOISE 200 1.6 20 z) W RATE (V/µS)1150750000 ED SLEW RATE (X) 111...042 VOLTAGE, V (nV/√HN 110557 SLE MALIZ .8 OISE 30 R .6 N 3 O T R = 3.5KΩ N R = 3.5KΩ U L L P 20 .4 N 2 200 500 1K 2K 5K 10K 20K 3050 100 150 200 250 300 I 10 100 1K 10K .1M EXT. COMPENSATION RESISTANCE, RC (Ω) TOTAL SUPPLY VOLTAGE, VS (V) FREQUENCY, F (Hz) COMMON MODE REJECTION POWER SUPPLY REJECTION COMMON MODE VOLTAGE TION, CMR (dB)111024000 CTION, PSR (dB) 111024000 AGE, V (V)CMPP311205000000 C E T JE 80 EJ 80 OL E R V DE R 60 PLY 60 ODE 50 O P M COMMON M 42001 10 100 1K 10K .1M 1M POWER SU 24001 10 100 1K 10K .1M 1M COMMON 310510KVS 2=0 ±K150V50K .1M .2M .5M 1M FREQUENCY, F (Hz) FREQUENCY, F (Hz) FREQUENCY, F (Hz) PA84U 3

PA84 • PA84A • PA84S GENERAL OUTPUT PROTECTION Please read Application Note 1 "General Operating Con- Two external diodes as shown in Figure 1, are required siderations" which covers stability, supplies, heat sinking, to protect these amplifiers against flyback (kickback) pulses mounting, current limit, SOA interpretation, and specification exceeding the supply voltages of the amplifier when driving interpretation. Visit www.apexanalog.com for design tools that inductive loads. For component selection, these external diodes help automate tasks such as calculations for stability, internal must be very quick, such as ultra fast recovery diodes with power dissipation, current limit and heat sink selection. The no more than 200 nanoseconds of reverse recovery time. Be "Application Notes" and "Technical Seminar" sections contain a sure the diode voltage rating is greater than the total of both wealth of information on specific types of applications. Package supplies. The diode will turn on to divert the flyback energy outlines, heat sinks, mounting hardware and other accessories are located in the "Packages and Accessories" section. Evalu- into the supply rails thus protecting the output transistors from ation Kits are available for most Apex Microtechnology product destruction due to reverse bias. models, consult the "Evaluation Kit" section for details. For the most current version of all Apex Microtechnology product data FIGURE 1. PROTECTIVE, +VS INDUCTIVE LOAD sheets, visit www.apexanalog.com. SAFE OPERATING AREA (SOA) The bipolar output stage of this high voltage operational amplifier has two output limitations: 1. The internal current limit which limits maximum available output current. 2. The second breakdown effect, which occurs whenever the –V simultaneous collector current and collector-emitter voltage S exceeds specified limits. A note of caution about the supply. The energy of the flyback pulse must be absorbed by the power supply. As a result, a SOA transient will be superimposed on the supply voltage, the A) 50 m magnitude of the transient being a function of its transient +V OR –V (SS40 STEADY STATE t = 5ms t = 1ms ipiommulupptspee utddrtaaa annnnsccdieee t hnaoetnf edstxhu ccepue prserlyued pnwsp tit tshlhyien ai ksm zi neuagnnx eikcmrna duopimwaobdn sie,lu i titptyo .p i asIlfyb tb shreaoestr isbtn u ttgohp o epcr ltly raifa v mtnohspleti ae tAhgnCeet. M 35 O STABILITY R T F 30 Due to its large bandwidth the PA84 is more likely to oscillate N than lower bandwidth Power Operational Amplifiers such as E RR the PA83 or PA08. To prevent oscillations, a reasonable phase CU 25 margin must be maintained by: T U 1. Selection of the proper phase compensation capacitor and TP SAFE OPERATING AREA CURVES resistor. Use the values given in the table under external OU 20150 170 200 250 300 connections and interpolate if necessary. The phase margin can be increased by using a large capacitor and a smaller SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE (V) resistor than the slew rate optimized values listed in the The SOA curves combine the effect of these limits. For a table. The compensation capacitor may be connected to common (in lieu of +V ) if the positive supply is properly given application, the direction and magnitude of the output S bypassed to common. Because the voltage at pin 8 is only a current should be calculated or measured and checked against few volts below the positive supply, this ground connection the SOA curves. This is simple for resistive loads but more requires the use of a high voltage capacitor. complex for reactive and EMF generating loads. However, 2. Keeping the external sumpoint stray capacitance to ground the following guidelines may save extensive analytical efforts: at a minimum and the sumpoint load resistance (input and 1. The following capacitive and inductive loads are safe: feedback resistors in parallel) below 500Ω. Larger sumpoint ±V C(MAX) L(MAX) load resistance can be used with increased phase compen- S 150V 1.2µF .7H sation (see 1 above). 125V 6.0µF 25H 3. Connecting the amplifier case to a local AC common thus 100V 12µF 90H preventing it from acting as an antenna. 75V ALL ALL 2. Short circuits to ground are safe with dual supplies up to ±150V or single supplies up to 150V. 3. Short circuits to the supply rails are safe with total supply voltages up to 150V (i.e. ±75V). 4 PA84U

PA84 • PA84A • PA84S NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this informa- tion, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the informa- tion only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. 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. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDER- STOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks of their respective holders. Copyright © Apex Microtechnology, Inc. 2014 OCT 2015 PwAw8w4.Ua pe xanalog .com 5 (All Rights Reserved) PA84U REVV