A B C D E F G H J K

INPUT A (X8)
0 +INSTA_EXT R75 R76 3 0
1k5 18k 1
2
L16 C82 IC10:D +INA_PAD_EXT +OUTA_PAD_EXT
R59 IC15:A
R74 4066 C63 C83 L17
12
R105 2k NJM2122 MIDAS
20k 14 8 9
TRS 47u 13
X Y
10 XLR GAIN R100 C76 R51
R73 IC9:D 47u 470u

C
C91 1M R115 R77 R106 33 15k
TRSA_R 470pF
AD8694
47k 47k 6k8 C92 XLRA_3
RV3 470pF
R94 R41 C60
D5

6
1000pF 25k
VCOM 10k 15k
470pF

50%
TRSA_S VCOM +48v XLRA_1
SW_MICA (X8) R87 IC11:D
1 AD8694 1
D6 R79 R107 C93

12
10k 13
TRSA_T
C94 R80 IC9:C 47k 6k8 1000pF
XLRA_2 C96 C70 R60 14
AINA_ADC

470pF 1M 12

C
9
AD8694 C64 C84 R108 L18 15k
L19 C85 R81 8 11
X Y
10 470u 470pF
10 10 -INA_PAD_EXT -OUTA_PAD_EXT R62 IC15:B
47u
20k IC10:B 47u 470u 2k NJM2122
6
4066
7
-INSTA_EXT R82 R78 5
1k5 18k

2 2

INPUT B (X7)
+INSTB_EXT R66 R67 3
1k5 18k 1
2
L12 C78 IC10:A +INB_PAD_EXT +OUTB_PAD_EXT
R85
R65 5 4066 C61 C79 L13 IC14:A
7 1 2
R101 2k NJM2122 MIDAS
20k X Y
TRS 47u 6 10 XLR GAIN R119 C74 R36
R64 IC9:B 47u 470u

C
C87 1M AD8694 R114 R68 R102 33 15k
C88 RV2 470pF
R93 R84 C47
3 TRSB_R 470pF 47k D3 47k 6k8 XLRB_3 3

13
1000pF 25k
10k 15k
470pF

50%
TRSB_S VCOM +48v XLRB_1 VCOM
SW1_MICB (X7) R86 IC11:C
D4 R70 R103 C89 9
AD8694

5
TRSB_T XLRB_2 10k AINB_ADC
C90 R71 IC9:A 47k 6k8 1000pF
C95 C69 R58 8
470pF 1M 10

C
2
AD8694 C62 C80 L14
L15 C81 1 4 3
R104 15k
R72 X Y 470u 470pF
3
10 -INB_PAD_EXT -OUTB_PAD_EXT R3 IC14:B
20k IC10:C 47u 470u 2k NJM2122
47u 6
4066
-INSTB_EXT R48 R69 7
4 5 4
1k5 18k

ADC BUFFER R111 AINA_DIR_EXT

DAC FILTER
AOUTA_DAC_EXT
1k
AINA_ADC
C34
5
7
R28 +AINA +AOUTA R42 12
R99
5
47u 6
IC8:B R44
1k 6k2
13
14
1k
AOUTA_DAC AOUTA_DAC
LINE OUT 5
AD8694 C29 R43 IC13:D
680 1000pF 4k7
C42 R27 C57 AD8694
2 C37 R23 L7
LINE_OUTA
1
R26 C73 RV1_A 3

100%
680 100
470pF
R29 470pF IC8:A 10k 20k IC11:A 47u
R34 AD8694 AD8694 R22
10k 680 2
R45 -AINA -AOUTA R37 470pF
R92 47k C20
1
R38 3
120pF
1k 6k2 4k42
VCOM_ADC 330 VCOM_ADC
VCOM
R39 10
6
8
R31 -AINB -AOUTB R52 R55 6
330
R40 R47 9 1k 6k2
C65 4k42 R20 C19
10k IC8:C IC11:B 47k 120pF
680 C33
C58 R30 C43 AD8694 RV1_B 5
AD8694 C36 R21 L6

100%
1000pF LINE_OUTB
470pF 20k 7
680 6 100
470pF 470pF
R35 R32 R50 IC13:C 47u
IC8:D 10k 4k7 AD8694
9
13
AD8694 680
8
R98 AOUTB_DAC AOUTB_DAC
C35 14
R46 +AINB +AOUTB R49 10
AINB_ADC 1k
12 1k 6k2
7 47u
R97 AINB_DIR_EXT
AOUTB_DAC_EXT
VCOM 7

1k IC16:B
2.4 v
MC4580
5
2.4 v VCOM_ADC_EXT

HEAD PHONES
7
AOUTA_DAC_EXT
6

LINE / INST PAD DIRECT

2
R96 C68 R95
VCOM_ADC
HP_OUTA
1 12k4
RV1_A_EXT HPA_EXT HPA_EXT
SW5_EXT SW4_EXT SW1_EXT
3 IC16:A
30%

10
VCOM_EXT +INSTA_EXT +INA_PAD_EXT +OUTA_PAD_EXT AINA_DIR_EXT AOUTA_DAC_EXT
20k IC13:A 470u
MC4580R
8 AD8694 R90 3
VCOM 8
R88 47k 1
2
1k8 R91
-INSTA_EXT -INA_PAD_EXT -OUTA_PAD_EXT AINB_DIR_EXT AOUTB_DAC_EXT C66 R63
VCOM_ADC_EXT VCOM_ADC 10k 470u 12k
VCOM_EXT
R54
R83 10k
1k8 R89
SW3_EXT SW2_EXT IC13:B 47k
+INTSB_EXT +OUTB_PAD_EXT RV1_B_EXT HPB_EXT HPB_EXT
5
AD8694
R53 C67
30%

+INB_PAD_EXT HP_OUTB
20k 7
6 10
9 -INSTB_EXT -OUTB_PAD_EXT
470u FILE NAME: umc202hd.pdsprj DATE: 9
-INB_PAD_EXT
AOUTB_DAC_EXT DESIGN TITLE: umc202hd.pdsprj 03.08.2021
PAGE:
PATH: C:\Users\bob\Documents\Proteus Projects\umc202hd.pdsprj
1 of 1
BY: @AUTHOR REV:@REV TIME: 15:35:14

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