EN-27
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L281 CT2 L Channel.SchDoc
AMP019 Amp L
Contact Engineer:
L281CT
15/01/2021
INITIALS
Printed:
2 9Sheet of
Notes:
Contact Tel: 01223 203201Jon Henderson
A & R Cambridge Ltd.
Cambridge CB25 9QE
Waterbeach
A3
ARCAM
AGND
Op Amp Decoupling
50V
C1043
100N
50V
C1044
100N
50V
C1046
100N
50V
C1047
100N
50V
C1042
10UF
50V
C1045
10UF
+14V
-14V
TOOL1000 TOOL1001
1
FIX1000
Dia 3.2mm
1
FIX1001
Dia 3.2mm
TOOL1002 TOOL1003
LIN
RV1000
1K
AGND
AGND
TR1005
BC856B
100V
C1014
82P
AGND
TR1023
BC846B
100V
C1030
82P
TR1002
2SC2690A
TR1021
KSA1220A
TR1001
MMBTA42L
TR1024
MMBTA92L
0W125
R1028
33R
0W125
R1096
33R
0W125
R1043
560R
0W125
R1073
560R
0W125
R1030
10R
0W125
R1110
22R
0W125
R1011
22R
GND_B
GND_B
TR1003
2SC2690A
TR1018
KSA1220A
D1006
S1D
D1010
S1D
63V
C1008
22UF
63V
C1033
22UF
100V
C1005
1uF
GND_A
100V
C1032
1uF
GND_A
+VLIFT
-VLIFT
2W
R1055
0.18R
2W
R1065
0.18R
2W
R1064
0.18R
2W
R1054
0.18R
2W
R1053
0.18R
2W
R1063
0.18R
+Input L
-Input L
0W5
R1035
1R0
2
3
1
84
IC1000A
OPA1652AIDR
AGND
-14V
+14V
0W063
R1004
10K
AGND
D1000
BAV99
ERR +VE
ERR -VE
100V
C1001
470N
20C/W
HS1000A
5400-9130+0
20C/W
HS1001A
5400-9130+0
TR1014A
NJL1302DG
TR1014B
NJL1302DG
0W5
R1086
1R0
0W125
R1068
100K
1206
FS1000
7.0A
1206
FS1001
7.0A
GND_L
1 2
8mm
J1000
LINK
12
8mm
J1002
LINK
12
8mm
J1003
LINK
1 2
8mm
J1004
LINK
12
8mm
J1005
LINK
12
8mm
J1007
LINK
1 2
8mm
J1001
LINK
12
8mm
J1006
LINK
-L Input
NF
AGND
P1065
P1059
P1074
P1066
P1055 P1056
P1035
P1041
P1017
P1064
P1092
P1044
P1029
P1060
P1032
P1042
P1026
P1048
P1024
P1099
P1061
P1100
P1080P1079
P1073
P1105
P1096
P1109
P1115P1114
P1107 P1108
P1098
P1116
P1118
P1002
P1011
P1005
P1006
P1001
P1004
P1010P1016
P1063
P1078
P1111
P1015
P1023
P1037
P1020
P1018
P1013
P1014
P1019
P1028
P1049
P1030
P1025
P1057
P1027
P1022
P1031
P1040
P1043
P1050
P1072
P1076
P1090
P1089
P1085
P1088
P1036
P1039
P1054
P1095
P1091
P1103
P1102
P1086
P1094
P1101
P1077
P1110
P1113
P1097
P1068
P1104
P1058
P1093
100V
C1024
100N
100V
C1020
100N
FILM
-L Input
Out L
Out L
1
2
M20-973
CON1000
HARWIN
SHORT L
SHORT L
TR1000
MMBTA42L
25V
C1000
1uF
P1000
P1003
P1008
Bias measurement
ERR +VE
ERR -VE
BIAS L+
BIAS L-
BIAS L+
BIAS L-
D1003
NSR1020
D1012
NSR1020
-14V
+14V
D1004
NSR1020
+14V
50V
C1007
100N
AGND
50V
C1012
100N
5V6
DZ1000
BZX84C
0W125
R1041
220K
AGND
+14V
-14V
50V
C1037
100N
5V6
DZ1003
BZX84C
25V
C1035
1UF
25V
C1013
1UF
-14V
+14V
AGND
AGND
P1083
+L Input
+L Input
5
34
TR1010B
BC846BD
2
61
TR1010A
BC846BD
2
61
TR1012A
BC846BD
5
34
TR1012B
BC846BD
2
61
TR1022A
BC846BD
2
61
TR1020A
BC846BD
43
5
TR1004A
BC856BD
43
5
TR1007A
BC856BD
16
2
TR1016B
BC856BD
43
5
TR1016A
BC856BD
43
5
TR1019A
BC856BD
16
2
TR1019B
BC856BD
16
2
TR1004B
BC856BD
5
34
TR1020B
BC846BD
5
34
TR1022B
BC846BD
16
2
TR1007B
BC856BD
100V
C1009
1N0
AGND
-14V
AGND
0W125
R1099
220K
AGND
TR1017
KSC3503
TR1011
KSA1381
GND_C
P1009
P1007
P1012
0W25
R1005
68R
GND_C
P1119
P1120
P1117
0W25
R1117
68R
TR1009
BC846B
TR1008
BC856B
TR1015
BC846B
TR1013
BC856B
50V
C1021
10UF
50V
C1018
10UF
0W25
R1036
12K
0W25
R1088
12K
0W25
R1034
12K
0W25
R1090
12K
D1005
BAS21LT1
D1009
BAS21LT1
P1082
P1081
P1087 P1033
P1034
P1051
P1069
P1045
P1075
P1070
P1053
P1052
P1071
P1038
P1084
27V
DZ1001
GLZ
27V
DZ1002
GLZ
D1007 BAV199D1008 BAV199
100V
C1002
220UF
100V
C1039
220UF
0W1
0.10%
R1059
1K0
0W1
0.10%
R1089
1K0
50V
C1016
470P
50V
C1026
470P
D1001
NSR1020
D1014
NSR1020
0W25
R1046
68R
0W25
R1069
68R
NF
NF
NF
50V
C1010
22N
50V
C1029
22N
100V
C1019
150P
100V
C1028
150P
100V
C1017
33P
100V
C1027
33P
D1013
NSR1020
-55V
+55V
RED LED1001
0603
RED LED1000
0603
0W063
R1071
68R
0W063
R1072
68R
0W063
R1098
1K5
0W063
R1017
1K5
0W063
R1008
5K1
0W063
R1003
3M3
0W063
R1012
20K
0W063
R1066
15K
50V
C1015
100N
0W063
R1108
360R
50V
C1038
100N
0W063
R1100
4K7
50V
C1040
1N0
0W063
R1114
1K5
50V
C1031
100N
0W063
R1074
1K5
0W063
R1083
68R
0W063
R1084
68R
0W063
R1039
4K7
0W125
R1094
6K8
0W125
R1060
6K8
0W063
R1109
1K5
0W063
R1107
68R
0W063
R1112
1K0
0W063
R1116
47R
0W063
R1111
100R
100V
C1041
1uF
50V
C1034
1N0
AGND
0W063
R1070
0R0
0W063
R1057
0R0
0W063
R1058
0R0
0W063
R1026
1K0
0W063
R1032
68R
0W063
R1027
47R
0W125
R1097
10K
0W125
R1040
10K
0W063
R1031
100R
100V
C1006
1uF
AGND
50V
C1011
1N0
NF
NF
0W063
R1015
10R
0W063
R1105
10R
0W063
R1048
220R
NF
0W063
R1016
10R
0W063
R1106
10R
100V
C1036
220N
100V
C1004
220N
0W063
R1029
220R
0W063
R1093
220R
0W063
R1101
3K3
0W063
R1019
3K3
0W063
R1047
0R0
0W063
R1050
0R0
0W063
R1033
1K0
0W063
R1085
1K0
0W063
R1044
430R
0W063
R1076
430R
0W063
R1045
2K7
0W063
R1077
2K7
0W063
R1001
10K
0W063
R1000
4K7
0W063
R1038
330R
0W063
R1079
330R
0W25
R1067
2K7
0W25
R1080
2K7
0W063
R1025
1K5
0W063
R1095
20R
TH1001100R@ 25C
TH1000
47k@25C
TH1002
47k@25C
NF
NF
NF
NF
NFNF
NF
0W5
R1024
0R47
0W5
R1023
0R47
1W
R1102
47R
1W
R1006
47R
1W
R1037
1K5
1W
R1091
1K5
2W
R1075
3R3
100V
C1003
22P
1
FIX1002
Dia 3.2mm
1
FIX1003
Dia 3.2mm
FIX1005
Dia 4.0mm
FIX1006
Dia 4.0mm
FIX1007
Dia 4.0mm
TR1006A
NJL3281DG
TR1006B
NJL3281DG
AGND
0W063
R1002
1K0
0W063
R1007
1K0
P1127
P1047
P1062
P1123
P1125 P1126
P1128
P1134
P1130
P1135 P1136
P1131
P1129
P1121
P1122
P1133
P1132
P1124
P1137
P1112
P1046
P1067
TR1025
MMBTA42L
+55V
TR1026
MMBTA92L
-55V
PLD
PLD
P1021
0W125
R1103
47K
-55V
0W063
R1020
47R
D1002
BAS21HT1G
P1106
NLD
NLD
0W125
R1118
47K
+55V
0W063
R1104
47R
D1011
BAS21HT1G
50V
C1023
22UF
2
3
1
84
IC1001A
LM4562MA
6
5
7
IC1001B
LM4562MA
0W125
Thin Film
R1013
15K
0W125
Thin Film
R1014
15K
0W063
R1021
270R
0W063
R1022
3K3
100V
C1022
22P
100V
C1025
22P
0W063
R1081
180R
0W063
R1049
10R
18_E048 PK 28/11/2018 F.0Amplifier improvements
19_E007 JH 11/02/2019 G.0Rx113 changed to 360R
0W063
R1113
360R
FIX1008
1
FIX1004
1
0W063
R1018
6K8
0W063
R1115
6K8
0W125
R1082
220K
0W125
Thin Film
R1010
10K
0W063
R1051
4R7
0W063
R1061
4R7
0W063
R1052
330R
0W063
R1062
330R
NF
NF
NF
NF
0W125
R1092
4R7
19_E027 PK 20/05/19 1.0Value changes protection and compensation
0W1
0.10%
R1009
30K
0W1
0.10%
R1056
3K0
0W1
0.10%
R1087
3K0
0W1 0.10%
R1042
2K0
0W1 0.10%
R1078
2K0
20_E002 PK 06/01/20 2.0PCB change only
21_E001 PK 12/01/21 3.0No change to this sheet
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