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1
2
A+12V
+50V
R104
R105
47K
47K
A
Q9
Q8
BC856
BC856
R118
100k
R119
100k
AGND
R112
R85
R103
R117
AGND
15K
15K
15K
15K
1
3
C40
R46
47uF/6.3V
2
C41
R45
47uF/6.3V
4
8
5
C50
R67
9
10
22uF/16V
6
C51
R68
11
7
22uF/16V
J14
CHGND
LINE / MIC IN
AGND
B
A+5V
A+3.3V
D+5V
IC1
R24
TLV70033DDCT
47-1206
1
5
IN
OUT
R25
10K
3
4
C25
C26
EN
N.C
R26
C27
C28
C29
10uF
0.1uF
47-1206
0.1uF
10uF/16V
0.1uF
R27
0
AGND
AGND
AGND
A+12V
C62
C80
0.1uF
0.1uF
C
MC33079
U6E
U8E
AGND
AGND
C63
C81
0.1uF
0.1uF
A-12V
Max Output = 0.70 x 3.3VA = 2.31Vpp
AOUTA
D
AOUTB
1
2
3
A+12V
Mic Gain =
C45
0.1uF
(((Rg/2)//Re) + Rf)/(((Rg/2)//Re)*2)
Rg= resistance between emitters
AGND
GAIN
R47
3.92k 1%
2
P1
A+12V
5KC
C44
R66
10 ohm
2200uF/6.3V
D9
D10
MMBD4148
MMBD4148
INVERTING INPUT
10 ohm
Q4
Q5
10 ohm
R49
MBT4403
MBT4403
C42
1.21k 1%
100pF
4.7k
4.7k
AGND
D11
D12
PREAMP
MMBD4148
MMBD4148
A-12V
R51
2.00k 1%
R53
330 ohm
9
C46
0.1uF
-
8
U22C
10
+
A-12V
MC33079
AGND
AGND
13
-
14
U22D
12
+
MC33079
AGND
C56
C161
0.1uF
0.1uF
MC33079
MC33079
U12C
+V
U22E
-V
TLO72
AGND
AGND
C57
C162
0.1uF
0.1uF
C66
470pF
R96
C18
R95
13.7K 1%
3
+
1
3.65k 1%
U22A
C16
2
3.3uF,25V
-
R94
MC33079
100k
470pF
R93
20.5k 1%
AGND
R92
AGND
10K
AGND
C71
470pF
R101
C67
R100
13.7K 1%
5
+
7
3.65k 1%
U22B
3.3uF,25V
C69
6
-
R99
MC33079
100k
470pF
R98
20.5k 1%
DAC LPF
AGND
R97
10K
AGND
Gain = +9.63dB (2.31Vpp -> 7.0Vpp)
2ND ORDER BUTTERWORTH
FC = 48kHz
AGND
3
4
5
R1
2K
C3
INPUT_L
10uF/16V
R3
1K
C49
47pF
AGND
C159
R48
3.92k 1%
R59
7.5k 1%
10uF/16V
13
R58
7.5k 1%
R12
2K
C6
-
R57
7.5k 1%
14
U6D
12
R61
3.32k 1%
10uF/16V
+
R16
MC33079
1K
R56
7.5k 1%
AGND
C160
AGND
10uF/16V
NON-INVERTING INPUT
C43
R50
100pF
1.21k 1%
AGND
C47
15pF
R54
1.00k 1%
9
-
8
U6C
R55
1.00k 1%
10
+
MC33079
C48
R52
15pF
2.00k 1%
AGND
C142
47pF
R110
10K
R106
10K
R107
10K
2
-
1
U6A
OUT_L
3
+
MC33079
AGND
3
2
1
S1A
SWDS-11L-C2
MIX
6
5
4
S1B
SWDS-11L-C2
AGND
C143
47pF
R111
10K
R108
10K
R109
10K
6
-
7
U6B
OUT_R
5
+
MC33079
AGND
Approval
4
5
6
7
R205
D5
100 ohm
2
3
1
A+3.3V
C166
R6
0.1uF
DNS
DAC_SCL
DAC_SDA
AGND
AGND
D6
2
3
1
DNS
AGND
C7
C8
C9
220pF
220pF
10uF,16V
AGND
AGND
C146
47pF
R81
1.50k 1%
R69
1.50k 1%
9
TRS_OUT-L
-
8
R122
U8C
10
+
MC33079
R134
1K
MUTE
AGND
C147
47pF
R84
1.50k 1%
R102
1.50k 1%
13
TRS_OUT-R
-
14
R124
U8D
12
+
MC33079
AGND
R135
1K
MUTE
A+12V
A-12V
1
2
3
4
MUTE
5
TRS_OUT-L
6
7
TRS_OUT-R
8
OUT_L
9
10
OUT_R
CN202
AGND
Description
Check
Design
REV
DATE
6
7
8
A+3.3V
A+5V
R2
C2
10uF,16V
DNS
R204
0
C1
C5
0.1uF
10uF,16V
C4
0.1uF
AGND
AGND
14
RST
13
3
R4
33
AD2(MDIV2)
MCLK
MCLK
A
12
4
R5
33
AD1/CDIN(MDIV1)
SCLK
BCLK
4.7K
11
2
R9
33
AD0/CS(I2S/LJ)
LRCK
LRCK
10
1
R11
33
SCL/CCLK(M0)
SDIN
SDIN
9
7
R15
33
SDA/CDOUT(M1)
SDOUT
SDOUT
22
AOUTA
AOUTA
U1
21
MUTEA
15
CS4270
AINA
23
AOUTB
AOUTB
16
24
AINB
MUTEB
17
18
VQ
FILT+
C10
C11
C17
R23
0.1uF
0.1uF
47uF/16V
0
AGND
AGND
MAX TRS OUT = 7Vpp = +7.87dBV
1.00k 1%
1
2
J7A
6
DUAL STEREO
5
B
10
C88
C89
9
R123
Q11
100pF
100pF
1K
2SD2114K
TRS OUT
AGND
1.00k 1%
3
4
J7B
8
DUAL STEREO
7
12
C90
C91
11
R125
13
100pF
1K
Q12
100pF
2SD2114K
AGND
CHGND
C
D
Title:
LXAN AUDIO
Size
Number
Revision
PC13A022
0
A2
Date :
2013/11/29
Sheet
1
of
6
File Name:
Design By :
AUDIO.SchDoc
ALESIS
8
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