Copyright © 2002
Revision 1.3
AUDIOMAX
5.1 CHANNEL DVD CLASS-D
AMPLIFIER EVALUATION BOARD
USER’S GUIDE
INTEGRATED PRODUCTS
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright 2000
Rev. 1.3,2003-06-27
TABLE OF CONTENTS
Board Settings......................................................................................................................................................................................... 3
System Specifications.............................................................................................................................................................................4
Schematic................................................................................................................................................................................................ 5
Bill of Materials...................................................................................................................................................................................... 9
Audio Measurements............................................................................................................................................................................ 10
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright 2000
Rev. 1.3,2003-06-27
LXE1722 6-CHANNEL EVALUATION BOARD FEATURES AND CIRCUIT DESCRIPTION
The LXE1722 6-CH Evaluation Board is a fully
functional 5.1 channel class-D amplifier designed
to support surround sound (five channels plus
subwoofer) applications. Connection to a single
power supply, 6 speakers, and an audio source
(such as a DVD player) is all that is required to
begin evaluating the amplifier.
Board Setting
1. Power and Ground connections: The terminal
VIN is for the power supply connection, “+” is
connected to the positive polarity of power
supply or battery (+7V ~ +25V); “-“ is
connected to the negative polarity of the
power supply or battery. Please make sure
your power supply polarity connection and
supply voltage is correct before you start to
evaluate the board.
2. Speakers’ connections:
LS – Left Surround Channel speaker output,
with +/- polarity;
L – Left Channel speaker output, with +/-
polarity;
S – Subwoofer speaker output, with +/-
polarity;
C – Center channel speaker output, with
+/- polarity;
R – Right Channel speaker output, with +/-
polarity;
RS – Right Surround speaker output, with
+/- polarity;
This evaluation board is designed for
standard 4Ω speaker loads. If different
impedance speakers are chosen, the output
frequency response will not be optimized but
can be easily modified to provide a flat
frequency response. Please see application
note AN16.
3. Audio input connections:
RCA2 – Left Surround channel audio source
input, single-ended;
RCA1 – Left channel audio source input,
single-ended;
RCA3 – Subwoofer channel audio source input,
single-ended;
RCA4 – Center channel audio source input,
single-ended;
RCA5 – Right channel audio source input,
single-ended;
RCA6 – Right surround channel audio source
input, single-ended;
4. SLEEP/MUTE connections:
The SLEEP/MUTE circuit (Figure 1) of the
amplifier has been designed to provide two
methods of control, a “manual” control using
the jumpers and an “automatic” means using a
Microcontroller.
a. Jumper Method: Control SLEEP/MUTE
through the SLEEP and MUTE header.
This is achieved by setting the jumpers to
the “OFF” position. Closing header pin 1
to pin 2 for SLEEP pulls the SLEEP/
control pin to VCC, thereby enabling the
amplifier. Closing header pin 2 to pin 3 for
MUTE pulls the MUTE control to ground,
enabling the inputs. Reverse the jumper
positions to “ON” to shut down or turn off
the amp. The MUTE pin can be left open.
b. CPU Method: Close SLEEP jumper to
“OFF” position (pin1,2) and MUTE jumper
to “ON” position. This ties the controls to
the external SLEEP/MUTE circuit which
can utilize a CPU for active power
up/power down control. Connect pin 1
and pin 2 of jumper J1 to the GPIO
(General Purpose Input/Output) pin of the
Microcontroller. For the SLEEP control,
Logic “High” will SLEEP the system, Logic
“Low” to release; for MUTE control, Logic
“LOW” will MUTE the system, and Logic
“High” to release. A delay time should be
followed to minimize pop noise, during
turn on. After SLEEP is set HIGH
(controller enabled), wait ~150msec
before controlling MUTE to LOW (enable
inputs). To turn off the system, MUTE
should be pulled HIGH (disable inputs)
and then control SLEEP to LOW.
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright 2000
Rev. 1.3,2003-06-27
SYSTEM SPECIFICATIONS
LX1722 6-ch
Parameter Symbol Test Conditions Min Typ Max
Units
Supply Voltage VCC 7 25 V
Idle Current IQ V
CC = 25V 420 mA
Sleep Status V
CC = 25V -0.3 VCC+0.3 V
Reference Voltage VREF V
CC = 25V 5 V
RPWM, CPWM, MUTE V
CC = 25V -0.3 VREF+0.3 V
LIN + LIN -, RIN +, RIN - VIN V
CC = 25V -0.3 VREF+0.3 V
LPREOUT, RPREOUT VPRE V
CC = 25V -0.3 VREF+0.3 V
Clock Frequency FOSC V
CC = 25V 430 KHz
Distortion THD+N VCC = 25V, 4Ω Load, 10Hz ~ 22KHz BPF,
PO= 1W, f = 1KHz 0.06 0.1 0.25 %
Distortion @ 20Hz ~ 20KHz THD+N VCC = 25V, 4Ω Load, 10Hz ~ 22KHz BPF,
PO = 1W 0.05 0.4 %
VCC = 25V, 4Ω Load, 1% THD+N @
10~22K BPF, f = 1KHz 60 W
PO VCC = 25V, 4Ω Load, 10% THD+N @
10~22K BPF, f = 1KHz 85 W
VCC = 25V, 2Ω Load, 1% THD+N @
10~22K BPF, f = 1KHz, Subwoofer Only 105 W
VCC = 25V, 2Ω Load, 1% THD+N @
10~22K BPF, f =100Hz, Subwoofer Only 105 W
VCC = 25V, 2Ω Load, 10% THD+N @
10~22K BPF, f =1KHz, Subwoofer Only 150 W
Maximum Output Power
PO
VCC = 25V, 2Ω Load, 10% THD+N @
10~22K BPF, f =100Hz, Subwoofer Only 150 W
Frequency Response VCC = 25V, 4Ω Load, 10Hz ~ 80KHz BPF,
PO = 1W -0.5 dB
Noise Floor VN VCC = 25V, 4Ω Load, 10 ~ 22KHz BPF, A-
weighted, no input 450 µVRMS
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright 2000
Rev. 1.3,2003-06-27
SCHEMATIC
OFF
SLEEP
1
2
3
MUTE
1
2
3
OFF
R14
10k
R12
10K
VCC
CPU SLEEP
CPU MUTE
R16
10K
SLEEP_ON/OFF
MUTE_ON/OFF
Q15
MMBT2222A/SOT
MUTE_ON/OFF
SLEEP_ON/OFF
R13
10K
MUTE
ON
CN
J1
1
2
_SLEEP
TO CPU
L100
R15
10K
VCC
VIN
1
2
Q16
MMBT2222A/SOT
ON
R5
10K
Figure 1 – SLEEP/MUTE & DC IN Schematic
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
Copyright 2000
Rev. 1.3,2003-06-27
SCHEMATIC (CONTINUED)
C46
0.68uF
C14A
100nF, 50V
CLOCK
R34
5.1, 1206
R55
0.030R, 1W
VCC
R53
15, 5%, 1W
C41
0.68uF
R2A
51K
C44
0.47uF
CNFBK-
L6
15uH
TB4
AMPCON
1
2
CNFBK+
C42
0.47uF
C34
100nF, 50V
C4
100pF, 50V
R6
34.8K,1%
Red
R7A
56.2K, 1%
C11A
22pF, 50V, 5%, COG
R37
5.1, 1206
SI4558DY
Q9
3
4
7
1
2
8
6
5
R54
0.030R, 1W
C45
0.68uF
+
C1
2200uF
35V
White
C43
0.68uF
R32
5.1, 1206
R19A
1.21K, 1%, 1/8W
C17A
4700pF
C6A
100nF
C20A
100nF
MUTE
RCA3
RCA JACK 1
2
R39
5.1, 1206
R11A
1.21K, 1%, 1/8W
+
C57
47uF
CENTER_OUT+
L7
15uH
R17A
1.21K, 1%, 1/8W
R9A
51K
C27
100nF, 50V
RCA4
RCA JACK 1
2
Q3
RFD10P03LSM
S-
+
C18A
4.7uF, 16V,TANT
R10A
22K
SFBK+
C10A
100pF, 50V
C9A 22pF, 50V
R35
5.1, 1206
CNFBK+
R33
5.1, 1206
C16A
4700pF
R8A
22K C22A
4700pF
R3A
10K, 5%, 1/8W
CENTER_OUT-
U2
LX1722CDB
2
3
14
15
13
18
1
16
12
11
4
5
6
7
8
9
10
17
19
20
21
22 23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
CPWM
RPWM
RIN+
RIN-
LAMPOUT
STATUS
LFAOUT
RAMPOUT
LIN-
LIN+
LMUTE
LEAOUT
LEAIN
VREF
CLOCK
GND
V25
_SLEEP
RMUTE
REAIN
REAOUT
RFAOUT RFBK-
RFBK+
RISN
NC
PVDD
CP
PGND
RN+
RP+
RP-
RN-
LN-
LP-
LP+
LN+
PGND
PVDD
CN
VDD
LISN
LFBK+
LFBK-
R36
5.1, 1206
C62
.68uF
Q2
SUB70NO3-09BP
C25
100nF, 50V
VCC
Q4
SUB70N03-09BP
SFBK+
R38
5.1, 1206
C26
100nF, 50V
SFBK-
C61
.68uF
C13A
22pF
Q1
RFD10P03LSM
SFBK-
SYNCH
L8
15uH
C64
.68uF
R4A
56.2K, 1%, 1/8W
C3A
22pF
C63
.68uF
R18A
1.21K, 1%, 1/8W
TB3
AMPCON
1
2
+
C58
47uF
S+
+
C8A1uF, 25V, 10%, TANT
+
C19A
4.7uF, 16V,TANT
C21A
4700pF
_SLEEP
SI4558DY
Q10
3
4
7
1
2
8
6
5
L5
15uH
CNFBK-
C12A
100pF, 50V, 5%, COG
R1A
10K R50
15, 5%, 1W
Figure 2 – Master Channel (Subwoofer/Center) Schematic
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
Copyright 2000
Rev. 1.3,2003-06-27
SCHEMATIC (CONTINUED)
R8
22K
+
C56
47uF
L+
R49
15, 5%, 1W
R48
15, 5%, 1W
RCA2
RCA JACK 1
2
VCC
C21
4700pF
R7
56.2K, 1%, 1/8W
SI4558DY
Q5
3
4
7
1
2
8
6
5
C13
22pF
SB1FBK+
R9
51K
L3
15uH
RCA1
RCA JACK 1
2
L2
15uH
R22
5.1, 1206
R21
0.030R, 1W
R11
1.21K, 1%, 1/8W
+
C8
1uF, 25V, 10%, TANT
R30
5.1, 1206
SI4558DY
Q8
3
4
7
1
2
8
6
5
SI4558DY
Q7
3
4
7
1
2
8
6
5
C14
100nF
C32
100nF, 50V
R29
5.1, 1206
TB2
AMPCON
1
2
R4
56.2K, 1%, 1/8W
C37
0.47uF, 50V
VCC
R10
22K
C20
100nF
White
C55
.68uF, 50V
LS+
R1 10K, 5%, 1/8W
R2
51K
C39
0.68uF, 50V
C24
100nF, 50V
C12
100pF, 50V, 5%, COG
_SLEEP
R18
1.21K, 1%, 1/8W
White
R26
5.1, 1206
SB2FBK+
+
C19
4.7uF, 16V, TANT
SB2FBK-
C17
4700pF
SB2FBK-
+
C2
2200uF
35V
R17
1.21K, 1%, 1/8W
C36
0.68uF, 50V
C23
100nF, 50V
MUTE
C6
100nF, 50V
C54
.68uF, 50V
U1
LX1722CDB
2
3
14
15
13
18
1
16
12
11
4
5
6
7
8
9
10
17
19
20
21
22 23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
CPWM
RPWM
RIN+
RIN-
LAMPOUT
STATUS
LFAOUT
RAMPOUT
LIN-
LIN+
LMUTE
LEAOUT
LEAIN
VREF
CLOCK
GND
V25
_SLEEP
RMUTE
REAIN
REAOUT
RFAOUT RFBK-
RFBK+
RISN
NC
PVDD
CP
PGND
RN+
RP+
RP-
RN-
LN-
LP-
LP+
LN+
PGND
PVDD
CN
VDD
LISN
LFBK+
LFBK-
L1
15uH
+
C18
4.7uF, 16V, TANT
C33
100nF, 50V
L4
15uH
LS-
C40
0.47uF, 50V
C35
0.68uF, 50V
CLOCK
C3
22pF
C10
100pF, 50V
SYNCH
SB1FBK+
R23
5.1, 1206
SB2FBK+
C9
22pF, 50V
C53
.68uF, 50V
SB1FBK-
C15
.68uF, 50V
C11
22pF, 50V, 5%, COG
R27
5.1, 1206
C22
4700pF
R3
10K, 5%, 1/8W
R19
1.21K, 1%, 1/8W
SB1FBK-
SI4558DY
Q6
3
4
7
1
2
8
6
5
R20
0.030R, 1W
L-
R25
5.1, 1206
R24
5.1, 1206
TB1
AMPCON
1
2
+
C7
47uF
C38
0.68uF, 50V
C16
4700pF
Figure 3 – Slave A Channel (Left/Left Surround) Schematic
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
Copyright 2000
Rev. 1.3,2003-06-27
SCHEMATIC (CONTINUED)
C30
100nF, 50V
R17B
1.21K, 1%, 1/8W
C52
0.68uF
R1B 10K, 5%, 1/8W
R47
5.1. 1206
RSFBK-
R51
15, 5%, 1W
L12
15uH
C65
.68uF
R4B
56.2K, 1%, 1/8W
_SLEEP
R45
5.1, 1206 L11
15uH
C68
.68uF
RS_OUT-
C66
.68uF
RSFBK+
C16B
4700pF
C50
0.68uF
C48
0.68uF
C31
100nF, 50V
+
C18B
4.7uF, 16V, TANT
C12B
100pF, 50V, 5%, COG
R7B 56.2K, 1%, 1/8W
C3B
22pF
R44
5.1, 1206
R10B
22K
RFBK-
C17B
4700pF
R3B
10K, 5%, 1/8W
R19B
1.21K, 1%, 1/8W
R57
0.030R, 1W
MUTE
C14B
100nF, 50V
+
C60
47uF
C28
100nF, 50V
CLOCK
C21B
4700pF
C22B
4700pF
RFBK-
VCC
C10B
100pF, 50V, 5%, COG
C13B
22pF
R2B
51K
Red
R56
0.030R, 1W
R41
5.1, 1206 L9
15uH
R9B
51K
R+
C6B
100nF, 50V, 20%, X7R
RS_OUT+
C49
0.68uF
RCA6
RCA JACK 1
2
R40
5.1, 1206
SYNCH
R43
5.1, 1206
R52
15, 5%, 1W
Red
+
C5
2200uF
35V
TB6
AMPCON
1
2
R-
C29
100nF, 50V
+
C8B1uF, 25V, 10%, TANT
C11B
22pF, 50V, 5%, COG
VCC
RFBK+
SI4558DY
Q12
3
4
7
1
2
8
6
5
SI4558DY
Q14
3
4
7
1
2
8
6
5
C47
0.47uF
CN
+
C19B
4.7uF, 16V,TANT
RSFBK-
U3
LX1722CDB
2
3
14
15
13
18
1
16
12
11
4
5
6
7
8
9
10
17
19
20
21
22 23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
CPWM
RPWM
RIN+
RIN-
LAMPOUT
STATUS
LFAOUT
RAMPOUT
LIN-
LIN+
LMUTE
LEAOUT
LEAIN
VREF
CLOCK
GND
V25
_SLEEP
RMUTE
REAIN
REAOUT
RFAOUT RFBK-
RFBK+
RISN
NC
PVDD
CP
PGND
RN+
RP+
RP-
RN-
LN-
LP-
LP+
LN+
PGND
PVDD
CN
VDD
LISN
LFBK+
LFBK-
C20B
100nF
L10
15uH
+
C59
47uF
R46
5.1, 1206
RCA5
RCA JACK 1
2
RFBK+
R42
5.1, 1206
R18B
1.21K, 1%, 1/8W
C67
.68uF
RSFBK+
TB5
AMPCON
1
2
R11B
1.21K, 1%, 1/8W
SI4558DY
Q13
3
4
7
1
2
8
6
5
C9B 22pF, 50V, 5%, COG
R8B
22K
SI4558DY
Q11
3
4
7
1
2
8
6
5
C51
0.47uF
Figure 4 – Slave B Channel (Right/Right Surround) Schematic
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 9
Copyright 2000
Rev. 1.3,2003-06-27
BILL OF MATERIALS
MISCELLANEOUS COMPONENTS
Line
Item Part Description Manufacturer & Part # Case Reference
Designators Qty
1 IC, Controller MICROSEMI LX1722CDB QSOP44 U1, U2, U3 3
2 Transistor, P-Channel 30V FET FAIRCHILD RFD10P03LSM TO-252 Q1, Q3 2
3 Transistor, N-Channel 30V FET VISHAY SILICONIX SUB70N03-09BP TO-263 Q2, Q4 2
4 N & P Channel MOSFET 30V VISHAY SILICONIX SI4558DY SO-8 Q5 – Q14 10
5 Transistor, NPN MOTOROLA MMBT2222A SOT-23 Q15, Q16 2
6 PCB MICROSEMI SGE2823 PCB Rev X2 1
7 Inductor, 15µH ISI RL622-150K TH
L1 – L4, L7 – L12 10
8 Inductor, 22µH ABRACON AIMT-117-22µH TH L5, L6 2
9 Ferrite Bead 1000 Ω MURATA BLM41P102SGPT 1206 L100 1
10 Phono Jacks, 90° Nickel Plated, Wht MOUSER 161-4214 TH
RCA1, RCA3, RCA5 3
11 Phono Jacks, 90° Nickel Plated, Red MOUSER 161-4214 TH
RCA2, RCA4, RCA6 3
12 Header Straight, .1” Center, 2POS AMP 87220-2 TH J1 1
13 Header Straight, .1” Center 3POs AMP 87220-3 TH
Sleep, Mute 2
14 Shorting Jumpers, Open Top, Black MOUSER 151-8030 TH
J1, Sleep, Mute 3
15 Terminal Block 2POS 5mm BLOCK MASTER 301-021-1000 TH LS, L, S, C R, RS, VIN 7
RESISTORS
Line
Item Part Description Manufacturer & Part # Case Reference
Designators Qty
1 Resistor 10K, 5%, 1/8W ASJ CR21J103T
SAMSUNG RC2012J103CS 0805 R1, R1A, R1B, R3, R3A, R3B,
R5, R12 – R16 12
2 Resistor 51K, 5%, 1/8W ASJ CR21J513T 0805
R2, R2A, R2B, R9, R9A, R9B 6
3 Resistor 22K, 5%, 1/8W ASJ CR21J223T 0805
R8, R8A, R8B, R10, R10A,
R10B 6
4 Resistor 56.2K, 1%, 1/8W ASJ CR21F5622T 0805
R4, R4A, R4B, R7, R7A, R7B 6
5 Resistor 34.8K, 1% ASJ CR21F2382T 0805 R6 1
6 Resistor 1.21K, 1%, 1/8W ASJ CR21F1211T
SAMSUNG RC1608F1211CS 0805 R11, R11A, R11B, R17, R17A,
R17B, R18, R18A, R18B, R19,
R19A, R19B 12
7 Resistor 0.025Ω 1W 5% DALE WSL-2010-R025-1R86
IRC LRF2010-01-R025-F
2010 R20, R21, R54 –R57 6
8 Resistor 5.1Ω, 5%, 1/4W
ASJ CR32J5R1T
KOA RM73B2BT5R1J
PANASONIC ERJ8GEYJ5R1V
SAMSUNG RC3216J5R1CS
1206 R22 – R27, R29, R30, R32 –
R47 24
9 Resistor 15Ω, 5%, 1W KOA RM73B3A150J
ROHM MCR100JZHJ150 2512 R48 – R53 6
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 10
Copyright 2000
Rev. 1.3,2003-06-27
CAPACITORS
Line
Item Part Description Manufacturer & Part # Case Reference
Designators Qty
1 Cap 2200µF, 25V, 20% PANASONIC EEU-FC1E222 TH
C1, C2, C5 3
2 Cap 22pF, 50V, 5%, COG NOVACAP 0805N330J500NT 0805 C3, C3A, C3B, C13, C13A,
C13B 12
3 Cap 100pF, 50V, 5% COG NOVACAP 0805N101J500NT 0805 C4, C10, C10A, C10B, C12,
C12A, C12B 7
4 Cap 100NF, 50V, 20%, X7R AVX 08055C104MAT2A
NOVACAP 0805B104M500NT
SAMSUNG CL21B104MBNC 0805 C6, C6A, C6B, C14, C14A,
C14B, C20, C20A, C20B, C23
– C34 21
5 Cap 4700pF, 25V, 5% CALCHIP GMC21CG472J50NT
VENKEL C0805COG500-472JNE
0805 C16, C16A, C16B, C17, C17A,
C17B, C21, C21A, C21B, C22,
C22A, C22B 12
6 Cap 47µF, 50V, 20% ELECT PANASONIC ECA-1HM470
NICHINCON UVX1H470ME TH C7, C56 – C60 6
7 Cap 1µF, 25V, 10%, TANT KEMET T491A105K025AS
AVX TAJA105K025R 3216 C8, C8A, C8B 3
8 Cap 4.7µF, 16V, TANT KEMET T491A475M016AS
AVX TAJA475M016R 3216 C18, C18A, C18 B, C19, C19A,
C19B 6
9 Cap 0.47µF, 50V, through PANASONIC ECQ-V1H474JL TH C37, C40, C42, C44, C47,
C51 6
10 Cap 0.68µF, 50V, through PANASONIC ECQ-V1H684JL TH C1 5, C35, C36, C38, C39,
C41, C43, C45, C46, C48 –
C50, C52 –C55, C61 – C68 24
11 Cap, COG, 22pF, 50V, 5% NOVACAP 0805N220J500NT 0805 C9, C9A, C9B, C11, C11A,
C11B 6
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 11
Copyright 2000
Rev. 1.3,2003-06-27
AUDIO MEASUREMENTS
A. THD+N VS. POWER
0.001
100
0.01
0.1
1
10
%
100m 100500m 1 2 5 10 20 60.451.122
W
dx= 0. 000 W
10Hz ~ 22KHz BPF,
25VDC, 4ohm load,
Input signal f = 1KHz
Cyan-Left Surround;
Green-Left;
Red-Subwoofer;
Magenta-Center;
Yellow-Right;
Blue-Right Surround
0.001
100
0.01
0.1
1
10
0.85951
0.09495
%
100m 30012 5102050
104.82.194
W
dx= -102.7 W d
y
=-0.76456 %
10Hz ~ 22KHz BPF,
25VDC, 2ohm load,
Subwoofer Channel only
Cyan-f = 100Hz;
Green-f = 1KHz;
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 12
Copyright 2000
Rev. 1.3,2003-06-27
AUDIO MEASUREMENTS (CONTINUED)
B. THD+N VS. FREQUENCY
10HZ~22KHZ BPF; 4OHM LOAD; 25VDC SUPPLY
0.001
100
0.01
0.1
1
10
0.77103
0.25849
%
20 20k50 100 200 500 1k 2k 5k
5.025k100.225
Hz
dx=- 4.9248 kHz d
y
= -0.51254 % Channel Left & Left Surround
Cyan – Po = 1W, L
Green – Po = 1W, LS
Red – Po = 10W, L
Magenta – Po = 10W, LS
Blue – Po = 37W, L
Yellow – Po = 37W, LS
0.001
100
0.01
0.1
1
10
0.54711
0.28198
%
20 20k50 100 200 500 1k 2k 5k
5.025k100.225
Hz
dx =- 4.9248 kHz d
y
= - 0.26514 % Channel Subwoofer & Center
Cyan – Po = 1W, SW
Green – Po = 1W, CTR
Red – Po = 10W, SW
Magenta – Po = 10W, CTR
Blue – Po = 50W, SW
Yellow – Po = 50W, CTR
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 13
Copyright 2000
Rev. 1.3,2003-06-27
AUDIO MEASUREMENTS (CONTINUED)
B. THD+N VS. FREQUENCY (CONTINUED)
10HZ~22KHZ BPF; 4OHM LOAD; 25VDC SUPPLY
0.001
100
0.01
0.1
1
10
1.42241
0.3056
%
20 20k50 100 500 1k 2k 5k
5.025k100.225
Hz
dx=-4.9248 kHz d
y
=-1.11681 % Channel Right & Right
Surround
Cyan – Po = 1W, R
Green – Po = 1W, RS
Red – Po = 10W, R
Magenta – Po = 10W, RS
Blue – Po = 37W, R
Yellow – Po = 37W, RS
C. FREQUENCY RESPONSE
-10
+10
-8
-6
-4
-2
+0
+2
+4
+6
+8
-0.184
-0.685
d
B
r
10 30k20 50 100 500 1k 2k 5k 10k
17.5925k17.05
Hz
dx = - 17. 575 kHz d
y
= - 0. 501 dB 80KHz LPF
4ohm Load; 25VDC supply;
0dB = Po=1W (Vo = 2V)
Cyan – Left Surround
Green – Left
Yellow – Subwoofer
Blue – Center
Magenta – Right Surround
Red – Right
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 14
Copyright 2000
Rev. 1.3,2003-06-27
AUDIO MEASUREMENTS (CONTINUED)
D. NOISE FLOOR FFT
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
-100.345-100.239
d
B
r
20 20k50 100 200 500 1k 2k 5k 10k 18.9493k11.6588k
Hz
dx=-7.2904 kHz d
y
=+0.106 dB
10Hz ~ 22KHz =BPF, 4ohm Load; 25VDC supply; 0dB = Po=1W (Vo = 2V)
Cyan – Left Surround
Green – Left
Yellow – Subwoofer
Blue – Center
Magenta – Right Surround
Red – Right
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 15
Copyright 2000
Rev. 1.3,2003-06-27
PCB LAYOUT
PCB LAYOUT
Figure 5 – Components Layer (TOP) Layout
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 16
Copyright 2000
Rev. 1.3,2003-06-27
PCB LAYOUT (CONTINUED)
Figure 6 – Solder Layer (BOTTOM) Layout
LXE1722 6-CHANNEL EVALUATION BOARD USER GUIDE
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 17
Copyright 2000
Rev. 1.3,2003-06-27
PCB LAYOUT (CONTINUED)
Figure 7 – Components Placement (Silkscreen) Layout
