ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L949C1_3.0.0.sch
CD82 DAC - TOP SHEET AND PSU
Contact Engineer:
L949CT
24-Jul-2002
INITIALS
Printed:
1 2Sheet of
Notes:
Contact Tel: (01223) 203200Andrew Dutton
A & R Cambridge Ltd.
Pembroke Avenue
Cambridge CB5 9PB
Waterbeach
ARCAM
Vin
I
ADJ
A
Vout
O
IC100
LM317T
+
C100
470U EL 25V
+
C102
100U EL
R100
220R 0805
R103
1K8 0805
D101
1N4148
D100
1N4148
Vin
I
ADJ
A
Vout
O
IC101
LM317T
+
C103
100U EL
R102
270R 0805
R105
820R 0805
D103
1N4148
D102
1N4148
+
C106
100U 25V ZA EL
+12V +5V
+
C101
470U EL 25V
Vin
I
ADJ
A
Vout
O
IC102
LM337T
+
C104
100U EL
R101
220R 0805
R104
1K8 0805
D106
1N4148
D105
1N4148
-12V
AGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SK101
FFC23V
AGND
+
-
RLY100C
RLY DPDT SM A215
D104
1N4148
RESET*
DE EMPH
LEFTPOS
LEFTNEG
RIGHTNEG
RIGHTPOS
17MHZ OUT
LRCIN
DIN
BCKIN
DACs and oscillator
L949C2_2.0.0.sch
RIGHTPOS
RIGHTNEG
LEFTPOS
LEFTNEG
Output stage and phono sockets
L949C3_2.0.0.sch1
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
SK100
FFC32V
AGND
TP101
TP102
TP103
TP104
TP105
TP100
TP106
TP108
TP109
TP110
TP111
TP107
TP112
TP113
TP114
PD100
TOOLING
PD101
TOOLING
PD102
TOOLING
PD103
TOOLING
PD104
TOOLING
PD105
TOOLING
C108
10N 0805
C109
10N 0805
C110
10N 0805
C111
10N 0805
C112
10N 0805
C113
10N 0805
AGND EMC DECOUPLING
L949PB
+
C105
470U EL 25V
+
C107
470U EL 25V
C114
10N 0805
PD106
TOOLING
C117
100N PE
ITEM104
HJ3A00A
ITEM105
HJ3A00A
ITEM106
HJ3A00A
ITEM107
HL3AB
ITEM108
HL3AB
ITEM109
HL3AB
ITEM101
HA3V10A
ITEM102
HA3V10A
ITEM103
HA3V10A
FD100 FD101
ITEM100
C125
100N 0805
C127
100N 0805
C126
100N 0805
C128
100N 0805
C129
100N 0805
C124
100N 0805
C123
100N 0805
C122
100N 0805
C120
33P NPO 0805
C121
33P NPO 0805
C118
33P NPO 0805
C119
33P NPO 0805
02_E121 AJD 25/06/02 UP ISSUE to V1 add EMC capacitors. 1.0.0
02_E125 AJD 27/06/02 ISSUE 2 backwards compatibility mods 2.0.0
02_E154 WAF 25/07/02 PCB MODS ONLY 3.0.0
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