IRAUDAMP22 50W/2Ω x 2 Channel Class D Audio Power Amplifier Using the IR4322 By Jun Honda, Alvin Rojas CAUTION: International Rectifier suggests the following guidelines for safe operation and handling of IRAUDAMP22 Demo board; Always wear safety glasses whenever operating Demo Board Avoid physical contact with exposed metal surfaces when operating Demo Board Turn off Demo Board when placing or removing measurement probes www.irf.com IRAUDAMP22 REV 1.0 Page 1 of 22 TABLE OF CONTENTS ........................................................ PAGE INTRODUCTION.................................................................................................................3 SPECIFICATIONS ..............................................................................................................3 CONNECTION SETUP .......................................................................................................4 CONNECTOR DESCRIPTION............................................................................................5 TEST PROCEDURES.........................................................................................................6 PERFORMANCE AND TEST GRAPHS .............................................................................7 THERMAL INFORMATION ..............................................................................................10 SCHEMATIC.....................................................................................................................13 BILL OF MATERIALS ......................................................................................................15 PCB SPECIFICATIONS....................................................................................................18 REVISION CHANGES DESCRIPTIONS ..........................................................................22 www.irf.com IRAUDAMP22 REV 1.0 Page 2 of 22 Introduction The IRAUDAMP22 reference design is a two-channel, 50W/ch (2Ω/±13.5V; no heatsink)/ 100W/ch (2Ω/±19V; *with heatsink) half-bridge Class D audio power amplifier. This reference design demonstrates how to use the IR4322 IC, implement protection circuits, and design an optimum PCB layout using PowIRaudio integrated Class D IC. This reference design does not require additional heatsink or fan cooling for normal operation (one-eighth of continuous rated power).The reference design provides all the required housekeeping power supplies for ease of use. The two-channel design is scalable for power and the number of channels. Applications AV receivers Home theater systems Mini component stereos Powered speakers Sub-woofers Musical Instrument amplifiers Car audio amplifiers Features Output Power: Multiple Protection Features: PWM Modulator: 50W x 2 channels (10%THD+N 2Ω load; no heatsink), 100W x 2 channels (10%THD+N 2Ω load; *with heatsink), Over-current protection (OCP), high side and low side Over-voltage protection (OVP), Under-voltage protection (UVP), high side and low side DC-protection (DCP), Over-temperature protection (OTP) Self-oscillating half-bridge topology with optional clock synchronization Specifications General Test Conditions (unless otherwise noted) ±12V~±13.5V Supply Voltages ±12V~±19V Load Impedance 4-2Ω Self-Oscillating Frequency 400kHz Gain Setting 23.5dB Notes / Conditions Bipolar power supply; without heatsink Bipolar power supply; *with heatsink Resistive load No input signal, Adjustable 1Vrms input yields rated power Electrical Data IR Devices Used Modulator Typical Notes / Conditions IR4322 PowIRaudio integrated Class D IC Self-oscillating, second order sigma-delta modulation, analog input 59W 1kHz, 4Ω load, without heatsink 70W 1kHz, 4Ω load, *with heatsink 50W 1kHz, 3Ω load, without heatsink Output Power CH1-2: (1% THD+N) 92W 1kHz, 3Ω load, *with heatsink 37W 1kHz, 2Ω load, without heatsink 75W 1kHz, 2Ω load, *with heatsink www.irf.com IRAUDAMP22 REV 1.0 Page 3 of 22 80W 95W 69W 120W 50W 100W 4-2Ω ±65mA 1.5W 0.016% 240V 88% Output Power CH1-2: (10% THD+N) Rated Load Impedance Idling Supply Current Total Idle Power Consumption Distortion Residual Noise Channel Efficiency 1kHz, 4Ω load, without heatsink 1kHz, 4Ω load, *with heatsink 1kHz, 3Ω load, without heatsink 1kHz, 3Ω load, *with heatsink 1kHz, 2Ω load, without heatsink 1kHz, 2Ω load, *with heatsink Resistive load No input signal No input signal THD+N @ 20W, 2Ω IHF-A weighted, AES-17 filter Single-channel driven, 50W (With No heatsink), Class D stage *With Heatsink with thermal pad BER161-ND Connection Setup 12V~13.5V*, 5A DC supply 12V~13.5V*, 5A DC supply * With heatsink Power supply can go up to +/-19V 250W, Non-inductive Resistors 2 Ohm 2 Ohm SW1:PWM Shutdown/MUTE G J3 CH1 Output J4 S1 CH2 Output J7 J9 IR4322 Protection J5 J6 CH1 Input J8 CH2 Input Normal S2 S3 Volume R113 Audio Signal Generator Figure 1 Typical Test Setup www.irf.com IRAUDAMP22 REV 1.0 Page 4 of 22 Connector Description CH1 IN CH2 IN POWER CH1 OUT CH2 OUT EXT CLK DCP OUT J6 J5 J7 J3 J4 J8 J9 Analog input for CH1 Analog input for CH2 Positive and negative supply (+B / -B) Output for CH1 Output for CH2 External clock sync DC protection relay output Audio Precision-Setup: IRAUDAMP22 and Audio Precision shall be connected according to the Figure below: A B Audio Precision A B Bal inputs Gen 42 Ohms + + - - 2 Ohms 4 Power Supply * With heatsink Power supply can go up to +/-19V +/-13.V* +/35V + - + G - + CH1 - CH2 DB_209_Rev IR4322_DB2.0 CH1 CH2 Amp5 AMP22 Figure 2 www.irf.com IRAUDAMP22 REV 1.0 Page 5 of 22 Test Procedures Test Setup: 1. Connect 2-250 W dummy loads to output connectors (J3 and J4 as shown on Figure 1) and parallel it with input of Audio Precision analyzer (AP). 2. Connect Audio Signal Generator to J6 and J5 for CH1 and CH2 respectively (Ap). 3. Set up the dual power supply with voltages of ±12V~±13.5V (up to ±19V with heatsink); set current limit to 5A. 4. Set switch S1 to middle position (self oscillating). 5. Set volume level knob R130 fully counter-clockwise (minimum volume). 6. Connect the dual power supply to J7. as shown on Figure 1 Power up: 7. Turn ON the dual power supply. The ±B supplies must be applied and removed at the same time. 8. Red LED (Protection) should turn on almost immediately and turn off after about 3s. 9. Green LED (Normal) then turns on after red LED is extinguished and should stay on. 10. Quiescent current for the positive supply should be 55mA 10mA at +13.5V. 11. Quiescent current for the negative supply should be 65mA 10mA at –13.5V. 12. Push S3 switch (Trip and Reset push-button) to restart the sequence of LEDs indicators, which should be the same as noted above in steps 9-10. Functionality Audio Tests: 13. Apply 1V RMS at 1 kHz sinusoidal signal from the Audio Signal Generator. 14. Turn control volume up (R130 clock-wise) to obtain an output reading of 37Watts. 15. For all subsequent tests as shown on the Audio Precision graphs below (Figure 3Figure12), the measurements are taken across J3 and J4 with an AES-17 Filter. Observe that a 1 VRMS input generates an output around THD+N=1% power level. 16. Sweep the audio signal voltage from 15 mVRMS to 1 VRMS. 17. Monitor the output signals at J3/J4 with an oscilloscope. The waveform must be a non distorted sinusoidal signal with input signal below 1Vrms. www.irf.com IRAUDAMP22 REV 1.0 Page 6 of 22 Performance and Test Graphs Power vs THD+N (without heatsink) Test Conditions: VBus = ± 13.5V Input Signal = 1 KHz Load Impedance = 2 ohms Set Gain = 1% clipping 37W 10 5 2 1 0.5 0.2 % 0.1 0.05 0.02 0.01 0.005 0.002 0.001 100m 200m 500m 1 2 5 10 20 50 100 W Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 3 Red Blue Solid Solid 3 3 Anlr.THD+N Ratio Anlr.THD+N Ratio Left Left CH1 CH2 Amp21_22 PWR vs THD.at27 Figure 3 Power vs THD+N (with heatsink) Test Conditions: VBus = ± 19V Input Signal =1 KHz Load Impedance = 2 ohms Set Gain = 1% clipping 75W 10 5 2 1 0.5 0.2 % 0.1 0.05 0.02 0.01 0.005 0.002 0.001 100m 200m 500m 1 2 5 10 20 50 100 W Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 3 Red Blue Solid Solid 3 3 Anlr.THD+N Ratio Anlr.THD+N Ratio Left Left CH1 CH2 Amp21_22 PWR vs THD.at27 Figure 4 www.irf.com IRAUDAMP22 REV 1.0 Page 7 of 22 Frequency Response Test Conditions: VBus = 13.5V Set Output = 1V Load Impedance = 2 ohms +4 +3 +2 +1 -0 -1 d B r -2 A -4 -3 -5 -6 -7 -8 -9 -10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k 10k 20k 200k Hz Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 2 Red Blue Solid Solid 3 3 Anlr.Level A Anlr.Level B Left Left CH1 CH2 Amp21_22FR.at27 Figure 5 Noise Floor Test Conditions: VBus = ± 13.5V Load Impedance = 2 ohms Set Gain = 1% clipping No Input Signal +20 +10 +0 -10 -20 -30 -40 -50 d B V -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 10 20 50 100 200 500 1k 2k 5k Hz Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 2 Red Blue Solid Solid 3 3 Fft.Ch.1 Ampl Fft.Ch.2 Ampl Left Left CH1 CH2 Amp21_22FTT,Flloor noise.at27 Figure 6 www.irf.com IRAUDAMP22 REV 1.0 Page 8 of 22 Noise Floor with 1Vrms Output Test Conditions: VBus = ± 13.5V Output = 1Vrms @ 1 KHz Load Impedance = 2 ohms Set Gain = 1% clipping +0 -10 -20 -30 -40 d B V -50 -60 -70 -80 -90 -100 -110 10 20 50 100 200 500 1k 2k 5k 10k 20k Hz Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 2 Red Blue Solid Solid 3 3 Fft.Ch.1 Ampl Fft.Ch.2 Ampl Left Left CH1 CH2 Amp21_22_FFT_1V.at27 Figure7 Efficiency Tested with no heat sink Figure8 www.irf.com IRAUDAMP22 REV 1.0 Page 9 of 22 Thermal Information 1) 1/8 Po Thermal information for IRAUDAMP22 Conditions: Tamb=25°C natural convection cooling Both Channel Driven 1/8Po continuous 30mins Temperature measured by infrared camera IR4322’s temperature saturated ≤85°C within 30minutes Figure9 load impedance 4Ω load 3Ω load 2Ω load 1/8 Power(W) THD=1% power(W) THD=10% power(W) 7.44 59 80 *9.28 *70 *95 6.57 50 69 *11.96 *92 *120 4.65 37 50 *9.4 *75 *100 *With heatsink www.irf.com IRAUDAMP22 REV 1.0 Page 10 of 22 2) Peak Power duration (no heatsink) Test conditions: 1kHz sine wave signal input ; Both channels driven Fsw=400kHz LoadZ 10%THD PoW Duration 2Ω 3Ω 4Ω 50 69 80 Till Thermal Shutdown Till Thermal Shutdown Till Thermal Shutdown 3) Peak Power duration (With heatsink) Test conditions: 1kHz sine wave signal input ; Both channels driven Fsw=400kHz www.irf.com LoadZ 10%THD PoW Duration 2Ω 3Ω 4Ω 100 120 95 No Thermal Shutdown No Thermal Shutdown No Thermal Shutdown IRAUDAMP22 REV 1.0 Page 11 of 22 4) Heatsink installation Thermal pad Digikey part# BER161-ND Custom fit Heat Sink 21mm 56mm BER161-ND 38mm Figure10 www.irf.com IRAUDAMP22 REV 1.0 Page 12 of 22 Schematic Class D, Daughter Board IR4322 Module Schematic -B AMP22 SCH_DB_4322 Rev1.3 C17 NC D4 +13.5V 1N4148 D2 CH2 GND1 1 10R 8 2.2nF,50V 2.7k 1% 2.2nF,50V C7 C5 1nF SD C9 100R D5 VS2 24 25 26 VB2 28 O VN1 12 VS1 13 CH1 O J2A IN-2 CH1 R11 C11 4.7R 0.1uF R13 +B A26570-ND C13 0.1uF CH1 Output to LPF1 +B +13.5V 1N4148 R10 13 14 15 16 10K D3 C10 9 10 11 12 C15 0.1uF,100V 1N4148 SD A26568-ND 20 CH1 NC 10K D1 10 11 12 -B R15 1R VCC 7 8 9 -13.5V 21 FAULT VAA J1B VSS GND2 -B -13.5 CSD R9 DS2 22 -B COMP1 11 10uF,16V SD A26570-ND CH2 Output to LPF2 IN-1 10 C1 R5 -B VCC IN+1 9 IN-1 CSH2 29 VAA 10uF,10V 620R R7 VS2 5 6 7 8 23 31 -B 7 R3 1 2 3 4 O VAA CH2 IC1 IR4302 VN2 VSS VS1 +5V 0.1uF,100V CH2 O J2B GND 6 C3 18 10R R1 C4 10uF,10V -5V VCC R2 C16 IN+2 5 VSS COM IN-2 4 VB1 620R 17 R6 0.1uF R16 1R 14 2.7k 1% 10K C12 4.7R COMP2 3 1nF CSH1 IN-2 2.2nF,50V C8 R12 CLIP 2 2.2nF,50V 16 R4 10K COM R8 C6 15 DS1 VAA C2 NC NC 30 VAA A26568-ND 27 1N4148 VP2 4 5 6 VP1 IN-1 1 2 3 C14 0.1uF 19 J1A VSS +B R14 4.7R R17 10uF,16V 10K -B DS3 Figure11 Class D, Mother Board Control Volume and Power Supplies Schematic C19 R39 +5V 470 2.2uF,16V C15 R27 R17 +B CLK 47R 33pF 74AHC1G04 Control Volume U3 CH1 Feedback C5 10uF, 50V R13 IN-1 7 6 C108 10nF, 50V 5 VSS 1 VDD VR0 CS VR1 SDATA CLK 1 R7 2 CS 3 SDATAI 2 47R R9 4 SIMUL 47R R8 3 10R +5V 4 C1 10uF, 50V 3310S06S 5 6 SCLK R10 47R R11 7 8 MUTE 47R R3 100R 100K U_? ZCEN AINL CS AGNDL SDATAI AOUTL VD+ VA- DGRD VA+ SCLK AOUTR SDATAO AGNDR MUTE CS3310 AINR +5V 16 1 2 3 -5V 9 R14 R4 100R R2 7 8 9 -5V C6 10uF, 50V 10 11 12 VCC SD R56 0.0 1 2 3 4 R32 R34 1K 4.7K 33pF 74AHC1G04 C32 1000uF,25V -B L2 10uH CH2 OUT D6 CH2 O C24 1uF, 250V C28 D8 R48 R50 2.2k 10, 1W C18 150pF, 500V J4 1 2 OPEN -B R18 C26 22k 0.1uF, 400V U4 R105 10R Q101 FX941 U_6 MC78M12 +5V Power Supply VCC Power Supply Vout VCC Heat Sink HS1 GND Vin Z101 R101 R102 +B U_4 Short 0R, 1W 0R, 1W C106 10uF, 50V C105 10uF, 50V Z102 Vout R103 R104 -B C102 10uF, 50V U_5 0R, 1W 0R, 1W -5V MC79M05 IN Short D101 MA2YD2300 C101 10uF, 50V -5V Power Supply +5V MC78M05 Vin GND MMBT5401 C16 47R C34 OPEN Chassis Gnd +B 47k 1% 470 R28 R57 100K -B VCC CH2 Feedback IN-2 5 6 7 8 R40 2.2uF,16V OUT C103 10uF, 50V D102 MA2YD2300 C104 10uF, 50V -B Figure12 www.irf.com +13.5V Gnd -13.5V C31 1000uF,25V J2B CH2 IN 3.3K R72 OPEN 2 1 3 C33 OPEN Trace under J7 J1B CLK R107 +B Z104 15V J7 +5V R6 C3 10uF, 50V +5V R106 47K C25 0.1uF, 400V R58 100K 4.7R 4.7R 12 10 J6 Short +B IR432X_ MODULE -5V 11 C20 Q102 -B 13 14 15 16 +B 13 + CH1 - OPEN J2A C2 10uF, 50V R5 14 Audio in Z103 9 10 11 12 OC R49 2.2k 10, 1W J3 1 2 C27 D7 R47 1uF, 250V J1A 15 100K VCC UVP C23 C17 150pF, 500V 4 5 6 CH1 OUT D5 1K CH1 IN R71 OPEN 10uH CH1 O GND R108 8 R1 J5 4.7uF, 16V U_2 R33 47k 1% R55 0.0 C109 +5V C107 4.7uF, 16V L1 R31 3.3K Audio in +5V 22k IRAUDAMP22 REV 1.0 Page 13 of 22 + CH2 - Class D, Mother Board Clock and House Keeping Schematic +B SD R143 SW-3WAY_A-B S3A 10K R147 47k +5V SW S2 1N4148 R110 100k C112 1200pF, 50V 100pF, 50V C111 +5V 47k D105 R138 R112 820R 4.7k CStart OT R148 10k VCC 1Y 6A 2A 6Y 2Y 5A 3A 5Y 3Y 4A GND 4Y DCP R145 47K R144 UVP 10k Q109 Q110 MMBT5551 R141 47k MMBT5551 U_3 1A R146 47K Q103 SW-3WAY_A-B -B 5K POT SW R136 68k R116 47R R114 100R Z108 8.2V 74HC14 10nF, 50V Q108 +5V J8 BNC A24497 R118 1k EXT. CLK NORMAL MUTE R125 10K Q106 R134 10k R126 100K MMBT5401 Q105 R137 MMBT5551 R130 47K 47k R119 1k Trip and restart OVP +B R135 82k MMBT5551 R115 47R 10uF, 50V C114 CLK CLK S1 C119 SW-PB 0.1uF, 50V C115 S E I S3B 100pF, 50V R113 CH1 O C113 MMBT5551 Z107 10V R149 47K Z105 27V 1N4148 D107 C117 1N4148 100uF, 16V R120 100R R111 10K R140 10k R139 Z106 18V OT SP MUTE D103 C110 R142 68k D106 1N4148 MMBT5401 SW_H-L R109 1K 1nF, 50V 1 2 DC protection PROTECTION CH2 O I E S Q111 DCP D104 1N4148 MUTE R117 R131 47K -5V R128 6.8k R124 10k Q104 47R R122 47k C116 100uF, 16V R121 47k R123 DC_PS 1K R150 +B 47k MMBT5401 R151 47k R129 6.8k R133 47k Q112 MMBT5551 R127 6.8k Q107 1 2 3 Z109 8.2V -5V +5V MMBT5551 R132 47k 6 5 4 J9 2 1 PVT412 P1 -B . Figure13 www.irf.com IRAUDAMP22 REV 1.0 Page 14 of 22 IRAUDAMP22 Bill of Materials IRAUDAMP22 Daughter Board BOM No Description Quantity Vendor 1 490-1500-1-ND C1, C2, C5, C6 CAP CER 2200PF 50V 10% X7R 0603 4 Digikey 2 587-2668-1-ND C3, C4 CAP CER 10UF 10V X7R 10% 0805 2 Digikey 3 399-1082-1-ND C7, C8 CAP 1000PF 50V CERAMICX7R 0603 2 Digikey 4 490-5519-1-ND C9, C10 CAP CER 10UF 16V X6S 0805 2 Digikey 5 445-1418-1-ND C13, C14, C11, C12 CAP CER .10UF 100V X7R 10% 0805 4 Digikey 6 445-1377-1-ND C15, C16 2 Digikey 7 1N4148W-FDICT-ND D1, D2, D3, D4, D5 CAP CER .1UF 100V X7R 10% 1206 DIODE SWITCH 100V 400MW SOD123 5 Digikey 8 160-1183-1-ND DS1(CLIP) LED GREEN CLEAR 0603 SMD 1 Digikey 9 160-1181-1-ND DS2(FAULT) LED RED CLEAR 0603 SMD 1 Digikey 10 160-1646-1-ND DS3(ON) LED 468NM BLUE CLEAR 0603 SMD 1 Digikey 11 IR4322 IC1 1 IR 12 A26568-ND J1A, J1B 2 Digikey 13 J2A, J2B 2 Digikey R1, R2 RES 10 OHM 1/10W 5% 0603 SMD 2 Digikey R3, R4 RES 2.7K OHM 1/10W 1% 0603 SMD 2 Digikey 16 A26570-ND RMCF0603JT10R0CTND RMCF0603FT2K70CTND RMCF0603JT100RCTND 2 CH PowIRaudio integrated Class D IC CONN HEADER VERT 6POS .100 30AU CONN HEADER VERT .100 8POS 30AU R5 RES 100 OHM 1/10W 5% 0603 SMD 1 Digikey 17 RHM620GCT-ND R6, R7 RES 620 OHM 1/10W 5% 0603 SMD 2 Digikey 18 R8, R9, R17 RES 10K OHM 1/10W 5% 0603 SMD 3 Digikey 19 RHM10KGCT-ND RMCF0603JT4R70CTND R10, R11, R12 RES TF 1/10W 4.7 OHM 5% 0603 3 Digikey 20 P10KGCT-ND R13, R14 RES 10K OHM 1/10W 5% 0603 SMD 2 Digikey 2 Digikey 14 15 Part Number Designator 21 311-1.0ARCT-ND R15, R16 RES 1.0 OHM 1/8W 5% 0805 SMD *Heatsink is an option for IRAUDAMP22 to deliver high power up to 100W/2Ω IRAUDAMP22 Mother Board BOM NO Part No 1 565-1106-ND Designator Description C1, C5, C6, C101, C102, C103, C104, C105, C106, C115 CAP ALUM 10UF 50V 20% RADIAL # 10 Digikey 2 565-1103-ND C2, C3 2 Digikey CAP ALUM 2.2UF 50V 20% RADIAL Vender 3 478-1281-1-ND C15, C16 CAP CER 33PF 100V 5% NP0 0805 2 Digikey 4 338-2598-ND C17, C18 CAP MICA 150PF 500V 5% RADIAL 2 Digikey 5 PCC1931CT-ND C19, C20 CAP CER 2.2UF 16V 10% X7R 1206 2 Digikey 6 PCC104BCT-ND C119 CAP CER 0.1UF 50V 10% X7R 1206 1 Digikey 7 399-5960-ND C23, C24 CAP FILM 1UF 250VDC RADIAL 2 Digikey 8 495-1311-ND C25, C26 CAP FILM 0.1UF 400VDC RADIAL 2 Digikey C31, C32 CAP ALUM 1000UF 35V 20% RADIAL 2 Digikey 10 PCC2323CT-ND 9 565-1086-ND C107, C109 CAP CER 4.7UF 16V 10% X5R 0805 2 Digikey 11 PCC103BNCT-ND C108, C114 CAP CER 10000PF 50V 10% X7R 0805 2 Digikey 12 PCC102CGCT-ND C110 CAP CER 1000PF 50V 5% NP0 0805 1 Digikey 13 PCC101CGCT-ND C111, C113 CAP CER 100PF 50V 5% NP0 0805 2 Digikey www.irf.com IRAUDAMP22 REV 1.0 Page 15 of 22 14 478-1372-1-ND C112 CAP CER 1200PF 50V 10% X7R 0805 1 Digikey 15 565-1037-ND 16 1N4148W-FDICT-ND C116, C117 D103, D104, D106, D107 CAP ALUM 100UF 16V 20% RADIAL 2 Digikey DIODE SWITCH 100V 400MW SOD123 5 Digikey 17 MURA120T3GOSCT-ND D5, D6, D7, D8 DIODE ULTRA FAST 1A 200V SMA 4 Digikey 18 MA2YD2300LCT-ND D101, D102 DIODE SCHOTTKY 25V 1.0A MINI-2P 2 Digikey D105, 19 294-1086-ND HS1 HEATSINK HORZ SIX BLACK TO-220 1 Digikey 20 A32934-ND J1A, J1B CONN RECEPT 6POS .100 VERT DUAL 2 Digikey 21 A32935-ND J2A, J2B CONN RECEPT 8POS .100 VERT DUAL CONN TERM BLOCK 2POS 9.52MM PCB 2 Digikey Digikey Mouser or or 1 Digikey Digikey Mouser 22 277-1271-ND or 651-1714971 J3, J4 23 CP-1422-ND J5, J6 CONN RCA JACK R/A BLUE PCB CONN TERM BLOCK 3POS 9.52MM PCB 24 277-1272-ND or 651-1714984 J7 25 A32248-ND J8 26 ED1567 27 7G17A-100M-R 2 2 1 Digikey J9 CONN JACK BNC R/A 50 OHM PCB TIN TERMINAL BLOCK 7.50MM VERT 2POS 1 L1, L2 Class D inductor, 10uH 2 Digikey Inductors, Inc Inductors, Inc NORMAL 1 Digikey 1 Digikey 1 Digikey 1 Digikey 4 Digikey 7 Digikey 7G17A-100M-B 911-1D17A-100M 28 160-1143-ND Mouser 29 PVT412PBF-ND P1 LED 3MM GREEN TRANSPARENT IC RELAY PHOTOVO 400V 140MA 6DIP 30 160-1140-ND PROTECTION LED 3MM HI-EFF RED TRANSPARENT 31 FCX491CT-ND 34 P100KACT-ND Q101 TRANSISTOR NPN 60V 1A SOT-89 Q102, Q104, Q106, TRANS PNP 150V 350MW SMD SOT23Q111 3 Q103, Q105, Q107, Q108, Q109, Q110, TRANS NPN 160V 350MW SMD SOT23-3 Q112 R1, R2, R57, R58, R110, R126 RES 100K OHM 1/8W 5% 0805 SMD 6 Digikey 35 P100ACT-ND R3, R4, R114 RES 100 OHM 1/8W 5% 0805 SMD 3 Digikey 36 P4.7ECT-ND 2 Digikey 37 P47ACT-ND R5, R6 RESISTOR 4.7 OHM 1/4W 5% 1206 R7, R8, R10, R11, R27, R28, R115, R116, R117 RES 47 OHM 1/8W 5% 0805 SMD 9 Digikey 38 P10ACT-ND R9, R105 RES 10 OHM 1/8W 5% 0805 SMD 2 Digikey 39 P3.3KACT-ND R13, R14 RES 3.3K OHM 1/8W 5% 0805 SMD 2 Digikey 40 P22KACT-ND RES 22K OHM 1/8W 5% 0805 SMD 2 Digikey 41 P47KACT-ND R17, R18 R106, R121, R130, R131, R133, R137, R141, R145, R147, R149, R151 RES 47K OHM 1/8W 5% 0805 SMD 16 Digikey 42 P0.0ACT-ND R55, R56 RES 0.0 OHM 1/8W 0805 SMD 2 Digikey 43 P470ACT-ND R39, R40 RES 470 OHM 1/8W 5% 0805 SMD 2 Digikey 44 P100ECT-ND R120 RES 100 OHM 1/4W 5% 1206 SMD 1 Digikey 45 PT47KAFCT-ND R31, R32 RES 47.0K OHM 1W 1% 2512 SMD 2 Digikey 46 P1.0KECT-ND R33, R34 R109, R118, R123 RES 1.0K OHM 1/4W 5% 1206 SMD 2 Digikey RES 1.0K OHM 1/8W 5% 0805 SMD 4 Digikey 32 MMBT5401-FDICT-ND 33 MMBT5551-FDICT-ND 47 P1.0KACT-ND R122, R132, R139, R146, R150, R119, 48 PT10XCT R47, R48 RES 10 OHM 1W 5% 2512 SMD 2 Digikey 49 P2.2KECT-ND R49, R50 RES 2.2K OHM 1/4W 5% 1206 SMD 2 Digikey 50 541-0.0XCT-ND R101, 4 Digikey www.irf.com R102, R103. RES 0.0 OHM 1W Jump 2512 SMD IRAUDAMP22 REV 1.0 Page 16 of 22 R104 51 P4.7KACT-ND R107, R138 RES 4.7K OHM 1/8W 5% 0805 SMD 2 Digikey 52 CT2265-ND POT 10K OHM 1/8W CARB VERTICAL 1 Digikey 53 P10KACT-ND R108 R111, R124, R134, R140, R144, R148 RES 10K OHM 1/8W 5% 0805 SMD 8 Digikey 54 P820ACT-ND R112 RES 820 OHM 1/8W 5% 0805 SMD 1 Digikey 55 3362H-502LF-ND R113 TRIMMER 5K OHM 0.5W TH 1 Digikey 56 P6.8KECT-ND R127, R128, R129 RES 6.8K OHM 1/4W 5% 1206 SMD 3 Digikey 57 P82KACT-ND R135 RES 82K OHM 1/8W 5% 0805 SMD 1 Digikey 58 P68KACT-ND R136, R142 RES 68K OHM 1/8W 5% 0805 SMD 2 Digikey 59 P8010S-ND S1 SWITCH TACTILE SPST-NO 0.02A 15V 1 Digikey 60 EG1908-ND S2 SWITCH SLIDE DPDT 12V .1A L=4 1 Digikey 61 EG1944-ND S3 SWITCH SLIDE DP3T .2A L=6MM 1 Digikey 62 296-1089-1-ND U3, U4 2 Digikey 63 73C8016 or 72J5420 U_1 IC SNGL INVERTER GATE SOT23-5 IC, DIGITAL VOLUME CONTROL, SOIC-16 1 Newark 64 3310-IR01 U_2 CS3310 Stand-alone Controller 1 *Tachyonix 65 296-1194-1-ND U_3 IC HEX SCHMITT-TRIG INV 14-SOIC 1 Digikey R125, R143, 66 MC78M05CTGOS-ND U_4 IC REG VOLT POS 500MA 5V TO220AB 1 Digikey 67 LM79M05CT-ND U_5 IC VOLT REG NEG 5V 500MA TO220-3 1 Digikey 68 LM78M12CT-ND U_6 IC VOLT REG 12V 500MA TO220-3 1 Digikey 69 P0.0ECT-ND Z101, Z102 RES 0.0 OHM 1/4W JUMP 1206 SMD 2 Digikey 70 P0.0ACT-ND Z103 RES 0.0 OHM 1/8W JUMP 0805 SMD 1 Digikey 71 BZT52C15-FDICT-ND Z104 DIODE ZENER 15V 500MW SOD-123 1 Digikey 72 568-6362-1-ND Z105 DIODE ZENER 27V 500MW SOD-123 1 Digikey 73 BZT52C18-FDICT-ND Z106 DIODE ZENER 18V 500MW SOD-123 1 Digikey 74 BZT52C10-FDICT-ND Z107 DIODE ZENER 10V 500MW SOD123 1 Digikey 75 BZT52C8V2-FDICT-ND Z108, Z109 DIODE ZENER 8.2V 500MW SOD-123 2 Digikey 76 10M7578 1 Newark 77 82K6096 Volume Knob ROUND KNURLED KNOB, 6MM Thermally TO-220 mounting kit with screw THERMALLOY - 4880G - Mounting Kit 3 Newark 78 8401K-ND 1/2" Standoffs 4-40 5 Digikey 79 H724-ND 4-40 Nut 80 H729-ND No. 4 Lock Washer *Tachyonix Corporation, http://www.tachyonix.co.jp www.irf.com STDOFF HEX M/F 4-40 .500"L ALUM NUT HEX 4-40 STAINLESS STEEL 5 Digikey WASHER LOCK INTERNAL #4 SS 5 Digikey IRAUDAMP22 REV 1.0 Page 17 of 22 PCB Specifications 1. 2. 3. 4. 5. 6. Two Layers SMT PCB with through holes 1/16 thickness 2/0 OZ Cu FR4 material 10 mil lines and spaces Solder Mask to be Green enamel EMP110 DBG (CARAPACE) or Enthone Endplate DSR-3241or equivalent. 7. Silk Screen to be white epoxy non conductive per IPC–RB 276 Standard. 8. All exposed copper must finished with TIN-LEAD Sn 60 or 63 for 100u inches thick. 9. Tolerance of PCB size shall be 0.010 –0.000 inches 10. Tolerance of all Holes is -.000 + 0.003” 11. PCB acceptance criteria as defined for class II PCB’S standards. www.irf.com IRAUDAMP22 REV 1.0 Page 18 of 22 Daughter Board Figure14 Figure15 Note: Refer to AN1170 for footprint and board mounting details. www.irf.com IRAUDAMP22 REV 1.0 Page 19 of 22 Mother Board Figure16 www.irf.com IRAUDAMP22 REV 1.0 Page 20 of 22 Figure17 www.irf.com IRAUDAMP22 REV 1.0 Page 21 of 22 Revision changes descriptions Revision Rev 1.0 Changes description Released Date April, 30 2013 WORLD HEADQUARTERS: 101 N. Sepulveda Blvd., El Segundo, California 90245 Tel: (310) 252-7105 Data and specifications subject to change without notice. 05/08/2013 www.irf.com IRAUDAMP22 REV 1.0 Page 22 of 22