Arcam DiVA CD72 - Page 28

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B
C
D
87654321
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ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No. DESCRIPTION OF CHANGE
J:\FILES\L-ELECT\PCB complete packages\l900s\l912 New 2000 DAC\L912_2.0\L912_2.0.DDB - L912C5_2.0.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
9 CD DAC Right Audio Stage
Circuit Diagram
L912CT
CW
28-Jun-2001
INITIALS
Date Printed
4 8Sheet of
Notes:
Cold R
Hot R
-13V
+13V
AUDIO R
FBCKR
FBCKR
FBCKRSNS
FBCKRSNS
MID_R
AUDIO_R
3
2
6
1
85
IC24A
AD797A SM
74
IC24B
AD797A SM
TR24
BC847B
TR21
BC847B
TR20
BC857B
R107 150R SM
R101
470R SM
L13
0R0 SM
VCCA1R(2)
VCCA1R
+8V9 +8V9
C118
100N SM
REF
R123
470R SM
74
IC25B
AD797A SM
GNDA1R
5
6
7
IC23B
OP275 SM
3
2
1
IC23A
OP275 SM
3
2
1
IC22A
TL072 SM
84
IC23C
OP275 SM
R124
10K 0805 0.1%
R125
10K 0805 0.1%
R129
10K 0805 0.1%
R128
22K1 0805 0.1%
R108
10K 0805 0.1%
DCSET R
DCSET_R
R115
220K SM
R97
2M2 SM
SERVO R
DC Bias
DC Servo
DAC 5V Reference
DCNR
SERVOR
COLDR
HOTR
REFR
MIDR
REFx2
-REF/2
REF/4
REF/4
REF
-5V
+8V9
3
2
6
1
8 5
IC25A
AD797A SM
TR23
BC857B
TR22
BC857B
TR26
BC847B
R119 150R SM
R92
470R SM
L12
0R0 SM
-5V
DAC 0V Reference
GNDAR
0V
D7 BAS16W SM
R118
470R SM
TR27
MMBFJ113
R102
10K SM
D10
BAS16W SM
SERVQK
FBKRSNS
FBKRSNSN
RFRSNS
GRSNS
GNDA1R(2)
R172
2M2 SM
FBCKR
Distortion Cancelation
C97
10U NP
C98
10U NP
6
7
10
IC6B
LM6182 SM
3
2
15
IC6A
LM6182 SM
134
1 8 9
16
IC6C
LM6182 SM
L5
4M7H RADIAL
L7
4M7H RADIAL
L10
1M5H RADIAL
L14
1M5H RADIAL
C52
3N3 PP
C55
3N3 PP
C61
330P PP
5
6
7
IC7B
OPA2134PA SM
84
IC7C
OPA2134PA SM
R19
1K0 SM
R21
1K0 SM
R20
1K0 SM
R14
1K0 SM
R46
47R SM
USE GUARD RAIL AROUND INVERTING I/PS
3
2
1
IC7A
OPA2134PA SM
L18
7F004
L20
7F004
L17
7F004
L19
7F004
+13V
-13V
C22
100N SM
C23
100N SM
C31
100N SM
C32
100N SM
C20
100N PE
C115
100N PE
C114
100N PE
C117
100N PE
C34
100N PE
C33
100N PE
C95
100N PE
C100
100N PE
C126
100N PE
C111
100N PE
C72
1N0 PP
R54
2K2 SM
GNDA1R
GNDA1R(2)
VCCA1R(2)
VCCA1R
MID R
FBCKRSNS
FBCKRSNS
FBCKR
FBCKR
DCSET_R
DCSET R
DCR
GND4
GND7
IC1-V
-13V
-13V
R71
3K9 SM
R72
3K9 SM
NOT FITTED
NOT FITTED
C500
1N 0805
C501
1N 0805
C108
6N8 PP
C93
6N8 PP
R61
1K0 SM
R62
1K0 SM
R43
1K5 SM
01_1078 CW 1-5-01 Production release 1.0
01_1084 1.1CW 30-4-01 Listening component changes
C67
100P SM
C68
100P SM
C120
47P SM
C121
47P SM
SERVO_R
CW 9-6-01 2 0