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Title: Digital AV Decoder
Approved by:
Drawn by:
File Name:
Path: M:\IanS\temp\temp.ddb - Documents\SC011691.SCH
Print date:
Drawn date:
Issue:
Sheet of
2-Apr-2008
0
Huntingdon, United Kingdom.
This drawing is the intellectual property of Cyrus Electronics Ltd.
O
c
Description:
6
13
6
Sheet
DAC output filters, volume control and buffers.
9-Apr-1999
Steve Sells
R635
22k
GND
codecDACLeft
FilteredDACLeft
R636
22k
GND
codecDACRight
FilteredDACRight
R637
22k
GND
codecDACLeftSurround
FilteredDACLeftSurround
R638
22k
GND
codecDACRightSurround
FilteredDACRightSurround
R639
22k
GND
codecDACCentre
FilteredDACCentre
R640
22k
GND
codecDACSub
FilteredDACSub
GND 2
1
IN 2
2
GND AC
3
IN 1
4
GND 1
5
OUT 1
6
VSS 2
7
GND DIG
8
CLOCK
9
SHIFT
10
DATA
11
Q
12
VDD 1
13
GND AC
14
VDD 2
15
OUT 3
16
GND 3
17
IN 3
18
VSS 1
19
OUT 2
20
IC608
LM1973M
3
2
1
IC601A
BA15532
R607
5k1
R613
10k
R619
2k2
C607
470pF
C613
470pF
3
2
1
IC604A
OPA2604
R601
100k
R625
2k
GND
GND
GND
C619
10uF
5
6
7
IC601B
BA15532
R608
5k1
R614
10k
R620
2k2
C608
470pF
C614
470pF
5
6
7
IC604B
OPA2604
R602
100k
R626
2k
GND
GND
GND
C620
10uF
+6V
+12VAop
-6V
-12VAop
3
2
1
IC602A
BA15532
R609
5k1
R615
10k
R621
2k2
C609
470pF
C615
470pF
3
2
1
IC605A
OPA2604
R603
100k
R627
2k
GND
GND
GND
C621
10uF
5
6
7
IC602B
BA15532
R610
5k1
R616
10k
R622
2k2
C610
470pF
C616
470pF
5
6
7
IC605B
OPA2604
R604
100k
R628
2k
GND
GND
GND
C622
10uF
+6V
+12VAop
-6V
-12VAop
3
2
1
IC603A
BA15532
R611
5k1
R617
10k
R623
2k2
C611
470pF
C617
470pF
3
2
1
IC606A
OPA2604
R605
100k
R629
2k
GND
GND
GND
C623
10uF
5
6
7
IC603B
BA15532
R612
3k6
R618
7k5
R624
2k2
C612
220nF
Rifa MMC
C618
220nF
Rifa MMC
5
6
7
IC606B
OPA2604
R606
100k
R630
2k
GND
GND
GND
C624
10uF
+6V
+12VAop
-6V
-12VAop
5.6dB gain
GND
GND
+6V
+6V
-6V
-6V
VOL_CE
GND 2
1
IN 2
2
GND AC
3
IN 1
4
GND 1
5
OUT 1
6
VSS 2
7
GND DIG
8
CLOCK
9
SHIFT
10
DATA
11
Q
12
VDD 1
13
GND AC
14
VDD 2
15
OUT 3
16
GND 3
17
IN 3
18
VSS 1
19
OUT 2
20
IC609
LM1973M
GND
GND
+6V
+6V
-6V
-6V
spi SCK
VOL_CE
T601
PZTAS42
T602
PZTA92
R631
2k4
R633
3k
R634
3k
R632
2k4
C625
47nF
C626
47nF
GND
C627
10uF
C628
10uF
-6V
+6V
-12VAop
+12VAop
Three channel
76dB attenuators
2nd order 45kHz filters
Butterworth
spi SCK
spi MOSI
C629
47nF
C630
47nF
C631
47nF
C632
47nF
C633
47nF
C634
47nF
C635
47nF
C636
47nF
C637
47nF
C638
47nF
C639
47nF
C640
47nF
C641
47nF
C642
47nF
C643
47nF
C644
47nF
GND
GND
-6V
+6V
+12VAop
-12VAop
C601
10uF
C602
10uF
C603
10uF
C604
10uF
C605
10uF
C606
10uF
R641
2k2
R642
2k2
GND
R643
2k2
R644
2k2
GND
R647
2k2
R648
2k2
GND
R645
2k2
R646
2k2
GND
R649
2k2
R650
2k2
GND
R651
2k2
R652
2k2
GND
6dB gain, 45kHz -3dB Butterworth Sallen & Key LPF
TapeOutLeft
TapeOutRight