Filter
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ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L971C5.Sch
DV29 MAIN DAC LS & RS AUDIO
Contact Engineer:
L971C5
24-Aug-2004
INITIALS
Printed:
5 11Sheet of
Notes:
Contact Tel: (01223) 203270Peter Gaggs
A & R Cambridge Ltd.
Pembroke Avenue
Cambridge CB5 9QR
Waterbeach
A2
L500
120R@100MHz
+3V3A
C502
10UF
35V
SGET
C514
100N
50V
0805
+5VA
C500
10UF
35V
SGET
C506
100N
50V
0805
C507
100N
50V
0805
C508
100N
50V
0805
DGND
DGND
DGND
+3V3_DAC1
C503
10UF
35V
SGET
C515
100N
50V
0805
C504
10UF
35V
SGET
C516
100N
50V
0805
DGND
ALRCLK_DAC1
ADAT_DAC1
ABCLK_DAC1
MCLK_DAC1
ALRCLK_DAC1
ADAT_DAC1
ABCLK_DAC1
MCLK_DAC1
MD
MC
ML_8740_1
MD
MC
ML_8740_1
DGND
+3V3_DAC1
RESET*
RESET*
R500
3K3
0W125
0805
C522
2N2
100V
FKP2
R502
3K3
0W125
0805
C526
680P
100V
FKP2
R508
680R
0W125
0805
R501
3K3
0W125
0805
C523
2N2
100V
FKP2
R509
680R
0W125
0805
R503
3K3
0W125
0805
C527
680P
100V
FKP2
6
5
7
IC500B
OPA2134UA
SO-8
DGND
DGND
2nd order Bessel filter, Av=1
C501
10UF
35V
SGET
C509
100N
50V
0805
C505
10UF
35V
SGET
C517
100N
50V
0805
+12VA
DGND
-12VA
DGND
R504
3K3
0W125
0805
C524
2N2
100V
FKP2
R506
3K3
0W125
0805
C528
680P
100V
FKP2
R510
680R
0W125
0805
R505
3K3
0W125
0805
C525
2N2
100V
FKP2
R511
680R
0W125
0805
R507
3K3
0W125
0805
C529
680P
100V
FKP2
2
3
1
84
IC500A
OPA2134UA
SO-8
DGND
DGND
2nd order Bessel filter, Av=1
DAC
FILTER
6
5
7
IC501B
OPA2134UA
SO-8
R512
10K
0W125
0805
C510
100N
50V
0805
C511
100N
50V
0805
R518
1M0
0W125
0805
C530
33P
100V
0805
C532
100UF
16V
NONP
R520
47R
0W125
0805
R521
47R
0W125
0805
+12VA
DGND
-12VA
DGND
DGND
OUTPUT BUFFER
Gain of -1.1
Cheapo version could have bipolar op-amp, but without feedback round coupling cap
2
3
1
84
IC501A
OPA2134UA
SO-8
R514
10K
0W125
0805
R519
1M0
0W125
0805
C531
33P
100V
0805
C533
100UF
16V
NONP
R522
47R
0W125
0805
R523
47R
0W125
0805
DGND
+12VA
-12VA
C534
470P
100V0805
C536
1N0
100V
0805
EMC_GND
+12VA
-12VA
C535
470P
100V
0805
C537
1N0
100V
0805
RLY500B
NEC
EB2-5NU
DGND
DGND
DGND
RLY500A
NEC
EB2-5NU
DGND
R516
11K
0W125
0805
R517
11K
0W125
0805
R524
0R0
0805
R525
0R0
0805
R526
0R0 0W125
0805
R527
0R0
0805
D500
BAT54S
SOT-23
D501
BAT54S
SOT-23
R513
47K
0W125
0805
R515
47K
0W125
0805
P507
P508
P519
P520
P513 P514
P515
P518
P521
P525 P526
P527
P530
P531
ML/I2S
28
DVDD
8
DGND
7
LRCKIN
1
BCKIN
3
DIN
2
DIFFHW
6
SCLK
5
RSTB
22
VOUTL+
17
MODE8X
4
VOUTR+
12
MODE
24
AGNDL
19
ZERO
21
VOUTL-
16
VMIDL
18
VOUTR-
13
AVDDR
9
AGNDR
10
VMIDR
11
MC/DM1
27
CSBIOW
23
MUTEB
25
MD/DM0
26
AVDDL
20
AGND
14
AVDD
15
IC502
XWM8740EDS
SSOP-28
Audio outputs are inverted so as to be compatible with
DV88. This is compenstaed for in software by setting a
register in the DAC to invert the signal
Fit on top of RLY500
C512
100N
100V
MKS2
C513
100N
100V
MKS2
C520
47P
100V
0805
C521
47P
100V
0805
LEFT SURR
RIGHT SURR
DGND DGND
CENTRE_OUT
SUB_OUT
From sheet 6
CENTRE
SUB
LS_OUT
C518
470P
100V
0805
C519
470P 100V
0805
SCRN
SKT500
KUNMING GOLD
RS_OUT
OUT_GND3OUT_GND4
CENTRE_OUT
SUB_OUT
ITEM500 1 Pad Damping 7.5x6x3MM RubberE828AP
ALL PARTS ON THIS SHEET ARE NOT FITTED FOR DV75
PG 1.004_E121 09-08-04 Production release