IRF IRAUDAMP22 50w/2 x 2 channel class d audio power amplifier using the ir4322 Datasheet

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
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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
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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
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IRAUDAMP22 REV 1.0
Page 3 of 22
80W
95W
69W
120W
50W
100W
4-2Ω
±65mA
1.5W
0.016%
240V
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
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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
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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.
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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
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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
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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
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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
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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
Load Z
10%THD
Po W
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
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Load Z
10%THD
Po W
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
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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
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+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
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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.
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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
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