PA162DK

PA162 Power Operational Amplifiers RoHS COMPLIANT FEATURES • • • • • • • Low Cost Wide Bandwidth - 1.1 MHz High Output Current - 1.5A per Amplifier Wide Common Mode Range Includes negative supply Wide Supply Voltage Range Single supply: 5V to 40V Split supplies: ± 2.5V to ± 20V Low Quiescent Current Very Low Distortion APPLICATIONS • • • • • • • • • • • • • Half and Full Bridge Motor Drivers Audio Power Amplifier Stereo- 11.3W RMS per amplifier Bridge- 22.6W RMS per two amplifiers Two Bridges- 45.2W RMS per package 3 Phase Motor Driver 3 Channels- 33.9W RMS per package Ideal For Single Supply Systems 5V - Peripherals 12V- Automotive 28V- Avionic Packaging Options 20-Pin PSOP, JEDEC MO-166-AB (PA162DK) DESCRIPTION The amplifier design is a dual power op amp on a single monolithic die. The quad output PA162 combines two dual op amp die in a single PSOP package. This approach provides a cost-effective solution to applications where multiple amplifiers are required or a bridge configuration is needed. Four independent amplifiers coupled with low quiescent current and very low THD makes this an ideal low-distortion 4-channel audio amplifier for applications such as laptops and computer speakers. The quad output PA162DK is available in a surface mount 20-pin PSOP, JEDEC MO-166-AB package. Builtin thermal shutdown allows the devices to self-protect against thermal overloads. Care must be exercised to observe the Safe Operating Area (SOA) curve and proper heatsinking will ensure maximum reliability. The wide common mode input range includes the negative rail, facilitating single supply applications. This makes it possible to have a ground-based input driving a single supply amplifier with ground acting as the second or bottom supply of the amplifier. www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Feb 2023 PA162U Rev E PA162 Figure 1: Equivalent Schematic Single Channel +Vs I BIAS MONITOR -IN +IN OUT THERMAL PROTECT -Vs 2 PA162U Rev E PA162 TYPICAL CONNECTION Figure 2: Typical Connection PA162U Rev E 3 PA162 PINOUT AND DESCRIPTION TABLE Figure 3: External Connections 4 Pin Number Name Description 2 3 4 5 6 7 8 9 12 13 14 17 18 19 1, 10 11, 15, 16, 20 -IN_A +IN_A +IN_B -IN_B -IN_C +IN_C +IN_D -IN_D OUT_D +Vs_CD OUT_C OUT_B +Vs_AB OUT_A NC -Vs The inverting input for channel A. The non-inverting input for channel A. The non-inverting input for channel B. The inverting input for channel B. The inverting input for channel C. The non-inverting input for channel C. The non-inverting input for channel D. The inverting input for channel D. The output for channel D. Connect to load and to the feedback resistors. The positive supply rail for channels C and D. The output for channel C. Connect to load and to the feedback resistors. The output for channel B. Connect to load and to the feedback resistors. The positive supply rail for channels A and B. The output for channel A. Connect to load and to the feedback resistors. No Connection The negative supply rail for all four channels. PA162U Rev E PA162 SPECIFICATIONS (PER AMPLIFIER) 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. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. Unless otherwise noted, the following conditions apply: ±VS = ±15V, T C =25°C. If -VS is disconnected before +VS, a diode between -VS and ground is recommended to avoid damage. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Units +Vs to -Vs 5 40 V Output Current IO SOA Power Dissipation, internal (1 Amplifier) PD 15 W Power Dissipation, internal (2 Amplifiers) 1 PD 24 W Power Dissipation, internal (3 Amplifiers) 1 PD 36 W Power Dissipation, internal (4 Amplifiers) 1 PD 45 W Supply Voltage, total Input Voltage, differential Input Voltage, common mode VIN (Diff) -Vs +Vs V Vcm +Vs -Vs - 0.5 V V 150 °C -55 220 +150 °C °C -40 +125 °C Junction Temperature, max 2 Temperature, pin solder, 10s max. Temperature Range, storage TJ Operating Temperature Range, case 2 TC 1. Rating applies when power dissipation is equal in each of the amplifiers. Power and thermal ratings are based on two separate dual monolithic power op-amps on one integrated copper heatslug. Amplifiers A and B are combined on one monolithic die while amplifiers C and D are on the other. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. INPUT Parameter Offset Voltage, initial Offset Voltage vs. Temperature Bias Current, initial Common Mode Voltage Range Common Mode Rejection, DC Power Supply Rejection Test Conditions Full temp range Full temp range Channel Separation Full temp range IOUT = 500mA, ƒ = 1 kHz Input Noise Voltage RS = 100 Ω, ƒ = 1 to 100 kHz PA162U Rev E Min Typ Max Units 1 20 100 15 mV µV/°C nA -Vs 500 +Vs V 60 60 90 90 dB dB 50 68 dB 22 nV/√Hz 5 PA162 GAIN Parameter Open Loop Gain Gain Bandwidth Product Phase Margin Power Bandwidth Test Conditions VO = ±10V, RL = 2 kΩ Min Typ 89 100 ƒ = 100 kHz, CL = 100pF, RL = 2 kΩ Full temp range VO(P-P) = 28V 0.9 Max Units dB 1.4 MHz 65 ° 13.6 kHz OUTPUT Parameter Test Conditions Current, peak Current, continuous Slew Rate Min Typ Max Units 1.5 1 1.0 1.4 A A V/µs Voltage Swing Full temp range, IO = 100mA |Vs| - 1.1 |Vs| - 0.8 V Voltage Swing Full temp range, IO = 1A |Vs| - 1.8 |Vs| - 1.4 V Harmonic Distortion AV = 1, RL = 50 Ω, VO = 0.5VRMS, ƒ = 1 kHz 0.02 % POWER SUPPLY Parameter Min Typ Max Units 5 30 40 V Current, quiescent +Vs (A/B) 8 10 mA Current, quiescent +Vs (C/D) 8 10 mA Current, quiescent, total 16 20 mA Voltage, Vss 1 Test Conditions 1. +VS and -VS denote the positive and negative rail respectively. VSS denotes total rail-to-rail supply. 6 PA162U Rev E PA162 THERMAL Parameter Typ Max Units 7.16 7.87 °C/W DC, 2 Amplifiers 1 4.69 5.16 °C/W DC, 3 Amplifiers 1 3.08 3.39 °C/W DC, 4 Amplifiers 1 AC, 1 Amplifier 2.51 2.77 °C/W 5.37 5.90 °C/W AC, 2 Amplifiers 1 3.52 3.87 °C/W AC, 3 Amplifiers 1 2.31 2.54 °C/W AC, 4 Amplifiers 1 1.89 2.07 °C/W Resistance, junction to case DC, 1 Amplifier Resistance, junction to air 2 Test Conditions Min 25 °C/W 1. Rating applies when power dissipation is equal in each of the amplifiers. Power and thermal ratings are based on two separate dual monolithic power op-amps on one integrated copper heatslug. Amplifiers A and B are combined on one monolithic die while amplifiers C and D are on the other. 2. Rating applies when the heatslug of the DK package is soldered to a minimum of 1 square inch foil area of a printed circuit board. PA162U Rev E 7 PA162 TYPICAL PERFORMANCE GRAPHS Figure 4: Quiescent Current Figure 5: Bias Current 120 16 80 12 40 8 0 4 -40 0 2 6 4 Average Bias Current, IB (nA) 20 Case Temperature, TC (°C) Total Supply Votlage, VS (V) 75 55 45 -80 10 8 65 -40 Figure 6: VOS 80 120 Figure 7: Phase Margin vs. Output Load Capacitance 65 3 Phase Margin, ɭ (°) ǀĞƌĂŐĞKīƐĞƚsŽůƚĂŐĞ͕sOS;ŵsͿ 40 Case Temperature, TC (°C) Average Quiescent Current, IQ (mA) 2 1 55 45 35 0 -40 0 40 80 Case Temperature, TC (°C) 8 0 120 25 00 04 08 12 16 20 Output Load Capacitance, CL (nF) PA162U Rev E PA162 Figure 8: Voltage Gain & Phase vs. Frequency Figure 9: Output Voltage Swing 2 Phase 100 Phase, ɭ (°) Gain, A (dB) 40 Gain 20 110 0 120 -20 1 Voltage Drop From Supply, (V) 1.8 90 60 100 1k 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 130 10 1.6 10k Output Current, IO (A) Frequency, F (kHZ) Figure 11: Pulse Response 10 10 8 8 +VS = +15V AV = +1 VIN = 10Vp 6 4 OUtput Volotage, VO(V) Output Voltage, VO (V) Figure 10: Pulse Response 2 0 -2 -VS = -15V RLсϮϬɏ fIN = 20 kHz -4 -6 4 2 0 -2 -4 -8 -10 -10 10 20 30 40 Time, t (μs) PA162U Rev E 50 60 70 -VS = -15V fIN = 1 kHz -6 -8 0 +VS = +15V AV = +1 VIN = 10Vp 6 0 200 400 600 800 1000 1200 1400 Time, t (μs) 9 PA162 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. Figure 12: SOA KƵƚƉƵƚƵƌƌĞŶƚ&ƌŽŵнsSŽƌͲsS;Ϳ 10 DC, TC = 25°C DC, TC = 85°C 1 ϰŵƉůŝĮĞƌƐ>ŽĂĚĞĚ ϯŵƉůŝĮĞƌƐ>ŽĂĚĞĚ ϮŵƉůŝĮĞƌƐ>ŽĂĚĞĚ ϭŵƉůŝĮĞƌ>ŽĂĚĞĚ 0.1 1 10 100 ^ƵƉƉůLJƚŽKƵƚƉƵƚŝīĞƌĞŶƟĂůsSͲsO;sͿ 10 PA162U Rev E PA162 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 R1 and R2 set up Amplifier A as non-inverting. Amplifier B is set up as a unity gain inverter driven from the output of Amplifier A. Note that Amplifier B inverts the signals about the reference node, which is set at midsupply by R5 and R6. When the command input is midrange, so is the output of Amplifier A. Since this is also equivalent to the reference node voltage, the output of Amplifier B is the same resulting in 0V across the motor. Inputs more positive than 5V result in motor current flow from left to right (see Figure 13). Inputs less than 5V drive the motor in the opposite direction. Figure 13: Bi-Directional Speed Control from a Single Supply The amplifiers are especially well-suited for applications such as this. The extended common mode range allows command inputs as low as 0V. The output swing lets it drive within 2V of the supply at an output of 1A. This means that a command input that ranges from 0 to 10V will drive a 24V motor from full scale CCW to full scale CW at ±1 A. -Vs (pins 11, 15, 16 and 20) must be tied to the heatslug externally on the PCB. To ease metal routing on the PCB, run a direct trace from the -Vs pin to the center heat slug. The PA162 can be used in a three amplifier configuration for a three phase inverter or motor as shown in Figure 14. PA162U Rev E 11 PA162 Figure 14: 3 Phase Inverter N o S hƐŝŶŐϯĂŵƉůŝĮĞƌƐĨƌŽŵWϭϲϮ ĂƐϯƉŚĂƐĞŵŽƚŽƌĚƌŝǀĞƌ͘ PA162 Quad STABILITY CONSIDERATIONS All monolithic power op amps use output stage topologies that present special stability problems. This is primarily due to non-complementary (both devices are NPN) output stages with a mismatch in gain and phase response for different polarities of output current. It is difficult for the op amp manufacturer to optimize compensation for all operating conditions. For applications with load current exceeding 300mA, oscillation may appear. The oscillation may occur only with the output voltage swing at the negative or positive half cycle. Under most operating and load conditions acceptable stability can be achieved by providing a series RC snubber network connected from the output to ground (see Figure 15). The recommended component values of the network are, RSN = 10 Ω and CSN = 0.01µF. Please refer to Application Note 1 for further details. Figure 15: Stability 12 PA162U Rev E PA162 THERMAL CONSIDERATIONS The PA162DK has a large exposed integrated copper heatslug to which the monolithic is directly attached. The solder connection of the heatslug to a minimum of 1 square inch foil area of the printed circuit board will result in thermal performance of 25°C/W junction to air rating of the PA162DK. Solder connection to an area of 1 to 2 square inches of foil is required for minimal power applications. Where the PA162DK is used in higher power applications, it is necessary to use surface mount techniques of heatsinking. Surface mount techniques include the use of a surface mount fan in combination with a surface mount heatsink on the backside of the FR4/ PC board with through hole thermal vias. Other highly thermal conductive substrate board materials are available for maximum heat sinking. The Power Derating graph assumes that the power dissipation is equal in each of the amplifiers. Power and thermal ratings are based on two separate dual monolithic power op amps on one integrated copper heat slug. Amps A and B are combined on one monolithic die while amps C and D are combined on the other. This multi chip configuration provides superior thermal performance by isolating each of the dual amplifiers. When loading either of the dual amplifiers it is possible to achieve better thermal performance by loading any of the following combination of amplifiers: (A or B) + (C or D). Figure 16: Power Derating /ŶƚĞƌŶĂůWŽǁĞƌŝƐƐŝƉĂƟŽŶ͕W;tͿ 50 ; н ;н 40 н н н Ϳ D Ϳ D W> /&/ Z ^ Z^ >K >K    ;н  ͿD W>/& /Z^ >K ;ͿD  W>/&/ Z>K  W>/ &/ 30 20 10 0 0 25 50 75 100 125 :ƵŶĐƟŽŶdĞŵƉĞƌĂƚƵƌĞ͕dC;°C) MOUNTING PRECAUTIONS 1. Always use a heat sink. Even unloaded the PA162DK can dissipate up to 0.8 watts. 2. Avoid bending the leads. Such action can lead to internal damage. ELECTROSTATIC DISCHARGE Like many high-performance amplifiers, the PA162 is very sensitive to damage due to electrostatic discharge (ESD). Failure to follow proper ESD handling procedures could have results ranging from reduced operation performance to catastrophic damage. Minimum proper handling includes the use of grounded wrist or shoe straps, grounded work surfaces. Ionizers directed at the work in progress can neutralize the charge build up in the work environment and are strongly recommended. PA162U Rev E 13 PA162 PACKAGE OPTIONS Part Number Apex Package Style Description MSL1 PA162DK DK 20-Pin PSOP Level 3 1. The Moisture Sensitivity Level rating according to the JEDEC industry standard classification. PACKAGE STYLE DK 14 PA162U Rev E PA162 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). 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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 UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnology, Inc. All other corporate names noted herein may be trademarks of their respective holders. PA162U Rev E 15