PA16

PA16 • PA16A Power Operational Amplifiers FEATURES • • • • • • • • High Power Bandwidth — 350 kHz Slew Rate — 20V/μs 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 44W RMS DESCRIPTION The PA16 and PA16A 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 recommended for use as unity gain followers. For continuous operation 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 interconnections at all operating temperatures. The Power SIP is electrically isolated. Figure 1: Equivalent Schematic 4 R1 R2 R5 R3 D1 Q1 R6 Q2 R7 10 R4 Q4 2 Q3 12 R15 A1 1 Q5 R8 8 Q7 R9 Q6 R10 R13 R12 R14 Q8 D2 R11 6 www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Dec 2019 PA16U Rev O PA16 • PA16A TYPICAL CONNECTION Figure 2: Typical Connection RF +V S 100nF * RCL+ RI +V S V OUT +CL + PA16 OUT -CL * Use 10μF per Amp of Output Current -V S RCL- -V S 100nF RL * PINOUT AND DESCRIPTION TABLE Figure 3: External Connections 2 Pin Number Name Description 1 2 4 6 -IN +IN +VS -VS 8 -CL 10 +CL 12 3, 5, 7, 9, 11 OUT NC The inverting input. The non-inverting input. The positive supply rail. The negative supply rail. Connect to the sinking current limit resistor. Power supply current flows out of this pin through RCL-. The negative supply is connected to the other side of RCL. Connect to the sourcing current limit resistor. Power supply current flows into this pin through RCL. The positive supply is connected to the other side of RCL+. The output. Connect this pin to load and to the feedback resistors. No connection. PA16U Rev O PA16 • PA16A SPECIFICATIONS All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25°C. The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test condition. Full temperature specifications are guaranteed but not 100% tested. ABSOLUTE MAXIMUM RATINGS Parameter Max Units +VS to -VS 38 V Output Current, within SOA IOUT 5 A Power Dissipation, internal 1 PD 62.5 W Supply Voltage, total Input Voltage, differential Input Voltage, common mode Symbol Min VIN (Diff) -30 30 V VCM -VS + 2 +VS - 2 V 260 °C 150 °C -55 +125 °C -40 +85 °C Temperature, pin solder, 10s max. Temperature, junction 1 Temperature Range, storage TJ Operating Temperature Range, case TC 1. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. CAUTION The substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes. PA16U Rev O 3 PA16 • PA16A INPUT Parameter Offset Voltage, initial Offset Voltage vs. Temperature Offset Voltage vs. Supply Offset Voltage vs. Power Bias Current, initial Bias Current vs. Temperature Bias Current vs. Supply Offset Current, initial Offset Current vs. Temperature Input Impedance, DC Input Capacitance Common Mode Voltage Range, pos. 1 Common Mode Voltage Range, neg. 1 Common Mode Rejection, DC Test Conditions PA16 Min Full temp range PA16A Typ Max ±5 ±10 ±10 ±6 50 ±10 ±50 0.01 25 Min 200 200 Typ Max ±1 * * * 25 ±3 ±25 * * mV µV/°C µV/V µV/W pA pA/°C pA/V pA pA/°C GΩ pF * 15 100 100 1000 3 Units 100 * 50 * Full temp range +VS - 6 +VS - 3 * * V Full temp range -VS + 6 -VS + 5 * * V * * dB Full temp range 70 100 1. Exceeding CMV range can cause the output to latch. GAIN Parameter Test Conditions 1 kΩ load Full temp range, Open Loop @ 10 Hz 10 kΩ load Gain Bandwidth Product @ 1 MHz 10 Ω load Power Bandwidth 10 Ω load Full temp range, Phase Margin 10 Ω load PA16 Min Open Loop @ 10 Hz 4 Typ PA16A Max Min 103 86 Typ Max Units * dB * dB 4.5 350 * * MHz kHz 30 * ° 100 * PA16U Rev O PA16 • PA16A OUTPUT Parameter Voltage Swing 1 Voltage Swing 1 Current, peak Settling Time to 0.1% Slew Rate Test Conditions PA16 Min Typ IOUT = 5A, RCL = 0.08 Ω ±VS-4 ±VS-3 IOUT = 2A ±VS-2 ±VS-1.2 PA16A Max 5 2V step 13 Max Typ ±VS-3 * V ±VS-1.2 * V * * A µs V/µs * 0.6 20 Units Min * Capacitive Load Full temp range, A V > 10 SOA * Harmonic Distortion PO = 5W, F = 1 kHz, RL = 4 Ω 0.028 * % Small Signal Rise/fall Time RL = 10 Ω, AV = 1 100 * ns Small Signal Overshoot RL = 10 Ω, AV = 1 10 * % 1. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to –VS. POWER SUPPLY Parameter Voltage Current, quiescent Test Conditions Full temp range PA16 PA16A Min Typ Max Min Typ Max ±7 ±15 ±19 * 27 40 * * * * Units V mA THERMAL Parameter Test Conditions PA16 Min PA16A Typ Max Min Typ Max Units Resistance, AC, junction to case 1 Resistance, DC, junction to case Resistance, junction to air F > 60 Hz 1.4 1.63 * * °C/W F < 60 Hz 1.8 30 2.0 * * * °C/W °C/W Temperature Range, case Meets full range specs * °C -25 +85 * 1. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz. Note: *The specification of PA16A is identical to the specification for PA16 in applicable column to the left. PA16U Rev O 5 PA16 • PA16A TYPICAL PERFORMANCE GRAPHS Figure 4: Power Derating Figure 5: Output Voltage Swing 3.5 ^ĂƚƵƌĂƟŽŶsŽůƚĂŐĞ͕sS-sOUT (sͿ /ŶƚĞƌŶĂůWŽǁĞƌŝƐƐŝƉĂƟŽŶ͕WD (W) 70 60 50 40 30 20 10 0 3.0 TCсϮϱƚŽϴϱΣ 2.5 2.0 1.5 цsOUT 1.0 0.5 0 25 50 75 100 125 0 1 Case Temperature, TC (°C) 100 -30 80 -60 Phase, ˇ;ΣͿ Open Loop Gain, A (dB) 0 -120 -150 0 -180 -210 1 10 100 1k 10k .1M 1M 10M Frequency, F (Hz) 6 5 -90 20 -20 4 Figure 7: Phase Response 120 40 3 Output Current, IOUT (A) Figure 6: Small Signal Response 60 2 1 10 100 1k 10k .1M 1M 10M Frequency, F (Hz) PA16U Rev O PA16 • PA16A Figure 8: Current Limit Figure 9: Power Response 3.0 30 2.5 23 Output Voltage, VOUT (VP-P) Current Limit, ICL (A) | +VS | + | –VS | = 36V RCLсϬ͘ϯɏ 2.0 1.5 RCL = 0.62 Ω 1.0 0.5 0 -25 18 | +VS | + | –VS | = 30V 13 10 7.8 0 25 50 75 100 6 0.1M 125 0.2M Case Temperature, TC (°C) 120 ŽŵŵŽŶDŽĚĞZĞũĞĐƟŽŶ͕DZ;ĚͿ Normalized Bias Current, IB (X) 1M Figure 11: Common Mode Rejection 256 64 16 4 1 0.25 100 80 60 40 20 5 25 45 65 Case Temperature, TC (°C) PA16U Rev O 0.5M Frequency, F (Hz) Figure 10: Bias Current 0.06 -15 0.3M 85 105 1 10 100 1k 10k .1M 1M 10M &ƌĞƋƵĞŶĐLJ͕&;,njͿ 7 PA16 • PA16A Figure 12: Power Supply Rejection Figure 13: Input Noise 40 Input Noise Voltage, en (Ŷsͬя,nj) WŽǁĞƌ^ƵƉƉůLJZĞũĞĐƟŽŶ͕W^Z;ĚͿ 140 120 100 +VS 80 60 –VS 40 20 0 35 30 25 20 15 10 10 100 1k 10k .1M 1M 10M 10 100 &ƌĞƋƵĞŶĐLJ͕&;,njͿ 0.1M Figure 15: Quiescent Current 1.08 Normalized Quiescent Current, IQ (X) 3.0 2.5 Time, t (μs) 10k Frequency, F (Hz) Figure 14: Settling Time 2.0 O VN D OA L 1m 1.5 AD V 10m 1.0 LO NO  Ϭɏ>K ϭϬŵsϭ 0.5 0 1 2 3 4 5 6 7 Output Change From Zero (V) 8 1k 8 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 -25 0 25 50 75 100 125 Case Temperature, TC (°C) PA16U Rev O PA16 • PA16A Figure 16: Harmonic Distortion Figure 17: Pulse Response 1 15 0.1 PO = 0.5W RLсϰɏ Output Voltage, VOUT (V) ŝƐƚŽƌƟŽŶ͕d,;йͿ AV = 10 VPS = 15V PO = 5W RLсϰɏ 0.01 PO = 25W RLсϮɏ VIN = ±1V, tr = 100ns >KсϭϬɏ 10 5 0 -5 -10 -15 0.001 0.1k 1.0k 10k 0 100k 1 2 3 4 5 Time, t (μs) Frequency, F (Hz) Figure 18: Pulse Response Figure 19: Loading Effects 0 0.3 0.2 ѐ'ĂŝŶtŝƚŚ>ŽĂĚ͕ѐ ;Ě) Output Voltage, VOUT (V) VIN = ±0.2V, tr = 50ns 0.1 0.0 -0.1 -0.2 -0.3 0 0.5 1.0 Time, t (μs) PA16U Rev O 1.5 -0.3 IOUTсϭϱϬŵ -0.6 -0.9 IOUTсϰϬϬŵ -1.2 -1.5 100 1k 10k 0.1M Frequency, F (Hz) 9 PA16 • PA16A SAFE OPERATING AREA (SOA) 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. The following guidelines may save extensive analytical efforts: 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 TC = 85°C. ±VS Short to ±VS C, L, or EMF Load Short to Common 18V 15V 10V 0.9A 1.0A 1.6A 1.8A 2.1A 3.2A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. Figure 20: SOA T 4.0 T 3.0 C C =6 = 8 0°C 5° C 2.0 1.5 1.0 0.8 0.6 0.5 6 7 8 9 10 Ŷ Žǁ s ŬĚ 5m ĞĂ ďƌ t= ŶĚ ĞĐŽ ĞƐ ƚĂƚ LJƐ ĂĚ ƐƚĞ Output Current From +VS or -VS (A) 5.0 15 20 25 30 38 ^ƵƉƉůLJƚŽKƵƚƉƵƚŝīĞƌĞŶƟĂů͕VS-VOUT (V) 10 PA16U Rev O PA16 • PA16A GENERAL Please read Application Note 1 “General Operating Considerations” which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexanalog.com for Apex Microtechnology’s complete Application Notes library, Technical Seminar Workbook, and Evaluation Kits. TYPICAL APPLICATION Vehicular Sound System Power Stage When system voltages are low and power is at a premium, the PA16 is a natural choice. The circuit below (figure 21) utilizes not only the feature of low internal loss of the PA16, 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 Ω current limit resistors provide protection in the event of an output short circuit. Figure 21: Typical 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 RCL is 0.12 Ω, 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 recommended to maintain positive clamping pressure on heatsink mounting surfaces. Long periods of thermal cycling can loosen mounting screws and increase thermal resistance. 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. PA16U Rev O 11 PA16 • PA16A PACKAGE OPTIONS Part Number Apex Package Style Description PA16 PA16A PA16EE DP DP EE 12-pin SIP 12-pin SIP 12-pin SIP w/ formed leads PACKAGE STYLE DP 12 PA16U Rev O PA16 • PA16A PACKAGE STYLE EE PA16U Rev O 13 PA16 • PA16A 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 information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. 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