NAD D3020 - Circuit Diagrams; Preamp Circuit Diagrams (1;3)

C379
100n
R369
33R
C378
4U7
R364
4R7
RX1
3V3DA
R362 75R
AGND
RX0INPUT1
C357
100n X7R
VCC
1
GND
2
DATA
3
J112
GP1FRX
C362
1nF
AGND
1 3
5
46
2
T300
SPDIF 1:1
AGND
CX_SDIN1
1
CX_SCLK
2
CX_LRCK
3
VD
4
DGND
5
VLC
6
SCL/CCLK
7
SDA/CDOUT
8
AD1/CDIN
9
AD0/CS
10
INT
11
RST
12
AINR-
13
AINR+
14
AINL+
15
AINL-
16
VQ
17
FILT+
18
REFGND
19
AOUTB4-
20
AOUTB4+
21
AOUTA4+
22
AOUTA4-
23
VA
24
AGND
25
AOUTB3-
26
AOUTB3+
27
AOUTA3+
28
AOUTA3-
29
AOUTB2-
30
AOUTB2+
31
AOUTA2+
32
AOUTA2-
33
AOUTB1-
34
AOUTB1+
35
AOUTA1+
36
AOUTA1-
37
MUTEC
38
LPFLT
39
AGND
40
VARX
41
RXP7/GPO7
42
RXP6/GPO6
43
RXP5/GPO5
44
RXP4/GPO4
45
RXP3/GPO3
46
RXP2/GPO2
47
RXP1/GPO1
48
RXP0
49
TXP
50
VD
51
DGND
52
VLS
53
SAI_SDOUT
54
RMCK
55
CX_SDOUT
56
ADCIN2
57
ADCIN1
58
OMCK
59
SAI_LRCK
60
SAI_SCLK
61
CX_SDIN4
62
CX_SDIN3
63
CX_SDIN2
64
*
U303
5VA
C305
220U/6V3 HCN
C314
2.2U X5R
3V3D
L302
742792662
3V3DA
C366
22U 6V3 X5R
C309
10N
C310
100N
C311
100N
C300
10N
C301
10N
C302
10N
AGND
5VDA
AGND
5VDA
AGND
3V3DA
AGND AGND
3V3DA 3V3DA
AGND
AGND
3V3DA
C303
100N
5VDA
C304
10N
C312
100N
C313
100N
5VA
5VDA 5VA
AGND
AGND
AGND AGND
AGND
R322
750
R325
750
R326
750
R328
750
R333
750
R335
750
R337
750
R339
750
R340
750
R341
750
R346
750
R354
750
R355
750
R356
750
R357
750
R360
750
DAR_N
DAR_P
DAL_P
DAL_N
5VD
L301
742792662
C372
10U 10V X5R
AGND
5VDA
C376
10U 10V X5R
AGND
5VDA
5VDA
3V3DA
3V3DA
2
3
1
U300A
NE5532
6
5
7
U300B
NE5532
R318
1K74
C325
33P
C318
10N
R300
499R
R301
1K74
R317
499R
R309
2K21
R313
2K21
R312
499R
R303
499R
AGND
C329
1N NPO
C327
10N
C315
1N NPO
C308
1N
C334
1N
2
3
1
U307A
NE5532
6
5
7
U307B
NE5532
R359
1K74
C349
33P
C343
10N
R329
499R
R330
1K74
R358
499R
R347
2K21
R353
2K21
R352
499R
R338
499R
AGND
C355
1N NPO
C350
10N
C341
1N NPO
C339
1N
C358
1N
R307
549
R345
549
C321
1nF NPO
C345
1nF NPO
C306
47U/16V
C336
47U/16V
UES1C330MEM
UES1C330MEM
AGND
AGND
AGND
DAL_N
DAL_P
DAL_N
DAR_N
DAR_P
C316
330N
C342
330N
DALO
DARO
C356
10N
C371
10N
AGND
R302
10K
R305
10K
C307
100N
C319
100N
C324
Commen t: 100U/6V3
C333
100U/6V3
C332
100N
C331
1N
C322
1N
C323
100N
AGND
AGND
AGND
AGND
R332
10K
R331
10K
C340
100N
C335
100N
AGND
5VA
R370
1k37
C374
22N
C375
1N NPO
For layout refer CS42528 datasheet p80
C368
10N
5VDA
L303
742792662
C370
100U/6V3
C367
100N
AGND
RX2
C353
100N
AGND
C359
100N
C360
100N
C361
100N
C354
100N
AGND
C338
100N
C330
100N
C320
100N
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U309
NC7SV157
L300
BMB2A0600RS2
3V3DA
C346
22U/6.3V
C344
10N
AGND
AGND
AGND
C347
4U7
AGND
USB_MCLKO
USB_MCLKO
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U306
NC7SV157
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U304
NC7SV157
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U301
NC7SV157
R350
47R
AGND
AGND
AGND
AGND
AGND
USB_BCK
USB_DO
USB_FS
USB_DO
USB_BCK
USB_FS
R311
47R
R316
47R
R334
47R
C326
100N
AGND
34
100R
R310B
56
100R
R310C
7
8
100R
R310D
12
100R
R310A
BT_DO
BT_BCK
BT_FS
DARO
DALO
84
U311C
LME49860MA
2
3
1
U311A
LME49860MA
6
5
7
U311B
LME49860MA
R394
3K32
R398
2K21
R410
3K32
R404
2K21
C404
150N
C429
150N
R399
3K32
R403
3K32
C405
150N
C428
150N
Q313
MMBF4391LT1G
+12V
R391
100K
R400
10MEG
R408
10MEG
Q312
MMBF4391LT1G
R388
1K
R402
68K
R401
68K
AGND
VCL+
VCL-
C417
1uF
C420
1uF
R395
33R
R411
33R
AGND
-12V
IN2+
D313
BAT54S
R428
47K
C460
100U/25V
C461
470U/25V
+12V
AGND
Q316
DTA114
Q303
2SC3326
Q304
2SC3326
+12V
AGND
R371
100k
-12V
AGND AGND
D303
1SS352
D302
1SS352
R367
4K7
R366
4K7
R427
1K
AGND
1
2
3
4
5
J113
TO HP
AGND
6
5
7
U310B
NE5532
2
3
1
U310A
NE5532
84
U310C
NE5532
R380
3K32
R382
3K32
-12V
+12V
C464
100N
C465
100N
R385
56k
R377
56k
R374
100R
R386
100R
AGND
AGND
D304
1SS352
R378
4k7
Q306
2SC3326
R375
100R
D305
1SS352
R379
4k7
Q307
2SC3326
R383
4k7
D306
1SS352
Q308
2SC3326
R384
4k7
D307
1SS352
Q309
2SC3326
R387
100R
AGND AGND
C456
1N
R429
10K
D314
1SS352
R389
100K
-12V
AGND
AGND
AMP_EN
IN1+
Q315
DTA114
+12V
R431
100K
-12VAGND
HP_MUTE
R430
1K
C459
1N
AGND
D315
1SS352
HP_DET
AUDIO_DET
R413
47K
R390
47K
BASS_EN
AGND
DA_RST
DA_INT
AGND
DA_CS
DA_MISO
DA_MOSI
DA_CLK
DA_RST
DA_INT
DA_CS
DA_MISO
DA_MOSI
DA_CLK
BASS_EN
STBY
HP_DET
IIS_SEL
R349
0R
AGND
Q318
DTA114
5VD
C457
470U/10V
D316
1SS352
AGND
D312
BAT54S
C458
100U/10V
AGND
HP_DET
IIS_SEL
R324
100R
SAIFS
SAIFS
BT_FS
BT_BCK
BT_DO
AMP_EN
HP_MUTE
R438
1MEG
R434
1MEG
R432
634R
R433
634R
AGND
R445
47R
SP_SEL
R323
47K
R319
47K
SP_SEL
SP_DATA
C337
100N
AGND
R336
47R
C463
100N
R442
47R
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U302
NC7SV157
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U305
NC7SV157
S
6
I1
1
I0
3
VCC
5
Q
4
GND
2
U319
NC7SV157
R444
47R
R443
47R
84
U300C
NE5532
-12V
+12V
C387
100N
C391
100N
AGND
Q317
DTC114EKA
Q319
DTC114EKA
Q314
DTC114EKA
Q311
DTC114EKA
Q310
DTA114
Q302
DTA114
Q305
DTC114EKA
2
2
G
1
M
3
J110
COAXIAL INPUT
84
U307C
NE5532
-12V
+12V
C471
100N
C470
100N
AGND
C412
100U/25V
R392
10R
+12V
C414
100nZ
AGND
C413
100nZ
5VA
Vol L
Vol R
1 2 3
J109
To PSU board
AGND
5VS
nAMPON
PSUF
AGND
R396
200
Q320
DTA114
3V3S
/oe
1
a
2
gnd
3
y
4
vcc
5
U320
SN74AHC1G125DCK
C473
100N
AGND
R447
47R
R448
47R
G
1
OUT
2
IN
3
O
4
U313
AMS1117-5.0
5VA
INA1
1
INA2
2
INA3
3
INA4
4
GND
5
DCCAP_1A
6
GND
7
OUT1A
8
VDDO
9
DATA
10
CLOCK
11
LATCH
12
GND
13
TR1A
14
BA1A
15
BA2A
16
BA2B
17
BA1B
18
TR1B
19
GND
20
VEE
21
VCC
22
ADR0
23
ADR1
24
OUT1B
25
GND
26
DCCAP_1B
27
GND
28
INB4
29
INB3
30
INB2
31
INB1
32
U314
NJW1194
AGND
AGND
DARO
DALO
PHI_L
PHI_R
RCA_L
RCA_R
C447 4.7U/16V UKW
C453 3.3N
C446 100N
R420
4K7
AGND
C402
4.7U/16V UKW
C394 3.3N
C400 100N
R381
4K7
AGND
+7VA
-7VA
C386
100U/10V
C393
100U/10V
C390
100N
C395
100N
AGND
+7VA
-7VA
C440
10U/16V
-7VA
Vol L
Vol R
VA_CS
VA_CLK
VA_DATA
DARO DALO PHI_L PHI_R RCA_L RCA_R
R452
47K
R451
47K
R454
47K
R453
47K
C474
100N
C475
100N
C476
100N
C477
100N
C478
100N
C479
100N
R455
22K
R456
22K
SUB OUTa
AGND
OPTO_DET
ANA_DET
RX2 IN2+ IN1+
-12V
+12V
3V3D
VCL-VCL+
DCERR-
nAMPON
PHI_L PHI_R RCA_R RCA_L
+7VA-7VA
AGND
SUB OUTa
1 2
3 4
5 6
7 8
9
10
11 12
13 14
15 16
17 18
19 20
21 22
23
24
25 26
27
28
29 30
31 32
J105
To o/p board J305
5VA
C525
47UF
AGND
UM01A
TL082D
AGND
RM03
220K
CM04
1uF
UM01B
TL082D
RM07
1K
RM06
470K
AGND
AGND
+12V
-12V
DM04
Comment: BAS316
CM03
270pF
DM02
BAS316
DM05
BAS316
DM03 BAS316
DM01
BAS316
RM04
330K
RM05
10K
RM09
0
RM08
0
NAD Audio sense Vp1.0
QM01
2SC1815
AGND
AGND
CM06
0.1uF
CM07
0.1uF
CM05
22uF/16V
CM08
47uF
C482
100nF.63V
C484
220nF,63V
2
3
1
U321A
TL082
6
5
7
U321B
TL082
AGND
AGND
84
U321C
TL082
-12V
+12V
C483
100N
C481
100N
AGND
R460
11K
R459
11K
R458
22K
R463
100
SUB OUT
SUB OUT
D319
1SS352
C486
220P
C489
100pF
C488
100pF
AGND AGND
C487
1nF
AGND
1
2
3
4
5
CON301
FROM MAIN
5
1
4
2
3
6
7
8
9
10
11
J302
CKX-3.5-02AF
C396
NC
C392
NC
AGND
Headphone board
SUB OUTa
C496
47U/16V
C490
47U/16V
C491
47U/16V
C492
330N
C493
330N
5VS
AGND
VCL+
VCL-
+12V
-12V
3V3S
3V3D
5VA
5VD
5VS
AGND
VCL+
VCL-
+12V
-12V
3V3S
3V3D
5VA
5VD
5VS
IN1+
IN2+
+7VA
-7VA
PSUF
DCERR-
IN1+
IN2+
+7VA
-7VA
PSUF
DCERR-
1.PREAMP VM2.1(1/3)
PRE_DAC_Vm1.1
CIRCUIT DIAGRAMS
12