EN-28
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L281 CT3 R Channel.SchDoc
AMP019 Amp R
Contact Engineer:
L281CT
15/01/2021
INITIALS
Printed:
3 10Sheet of
Notes:
Contact Tel: 01223 203201Jon Henderson
A & R Cambridge Ltd.
Cambridge CB25 9QE
Waterbeach
A3
ARCAM
LIN
RV2000
1K
AGND
AGND
TR2005
BC856B
100V
C2014
82P
AGND
TR2023
BC846B
100V
C2030
82P
TR2002
2SC2690A
TR2021
KSA1220A
TR2001
MMBTA42L
TR2024
MMBTA92L
0W125
R2028
33R
0W125
R2096
33R
0W125
R2043
560R
0W125
R2073
560R
0W125
R2030
10R
0W125
R2110
22R
0W125
R2011
22R
GND_B
GND_B
TR2003
2SC2690A
TR2018
KSA1220A
D2006
S1D
D2010
S1D
63V
C2008
22UF
63V
C2033
22UF
100V
C2005
1uF
GND_A
100V
C2032
1uF
GND_A
+VLIFT
-VLIFT
2W
R2055
0.18R
2W
R2065
0.18R
2W
R2064
0.18R
2W
R2054
0.18R
2W
R2053
0.18R
2W
R2063
0.18R
+Input R
-Input R
0W5
R2035
1R0
2
3
1
84
IC2000A
OPA1652AIDR
AGND
-14V
+14V
0W063
R2004
10K
AGND
D2000
BAV99
ERR +VE
ERR -VE
100V
C2001
470N
20C/W
HS2000A
5400-9130+0
20C/W
HS2001A
5400-9130+0
TR2014A
NJL1302DG
TR2014B
NJL1302DG
0W5
R2086
1R0
0W125
R2068
100K
1206
FS2000
7.0A
1206
FS2001
7.0A
GND_R
1 2
8mm
J2000
LINK
12
8mm
J2002
LINK
12
8mm
J2003
LINK
1 2
8mm
J2004
LINK
12
8mm
J2005
LINK
12
8mm
J2007
LINK
1 2
8mm
J2001
LINK
12
8mm
J2006
LINK
-R Input
NF
AGND
P2065
P2059
P2074
P2066 P2067
P2055 P2056
P2035
P2041
P2017
P2047
P2064
P2092
P2044
P2029
P2060
P2032
P2042
P2026
P2048
P2024
P2046
P2099
P2061
P2100
P2080P2079
P2073
P2105
P2096
P2109
P2115P2114
P2107 P2108
P2098
P2116
P2118
P2002
P2011
P2005
P2006
P2001
P2004
P2010P2016
P2063
P2078
P2015
P2023
P2037
P2020
P2018
P2013
P2014
P2019
P2028
P2049
P2030
P2025
P2057
P2027
P2031
P2040
P2043
P2050
P2072
P2076
P2090
P2089
P2085
P2088
P2036
P2039
P2054
P2095
P2091
P2103
P2102
P2086
P2094
P2101
P2077
P2110
P2113
P2112
P2097
P2068
P2104
P2058
P2093
100V
C2024
100N
100V
C2020
100N
FILM
-R Input
Out R
Out R
1
2
M20-973
CON2000
HARWIN
SHORT R
SHORT R
TR2000
MMBTA42L
25V
C2000
1uF
P2000
P2003
P2008
Bias measurement
ERR +VE
ERR -VE
BIAS R+
BIAS R-
BIAS R+
BIAS R-
D2003
NSR1020
D2012
NSR1020
-14V
+14V
D2004
NSR1020
+14V
50V
C2007
100N
AGND
50V
C2012
100N
5V6
DZ2000
BZX84C
0W125
R2041
220K
AGND
+14V
-14V
50V
C2037
100N
5V6
DZ2003
BZX84C
25V
C2035
1UF
25V
C2013
1UF
-14V
+14V
AGND
AGND
P2083
+R Input
+R Input
5
34
TR2010B
BC846BD
2
61
TR2010A
BC846BD
2
61
TR2012A
BC846BD
5
34
TR2012B
BC846BD
2
61
TR2022A
BC846BD
2
61
TR2020A
BC846BD
43
5
TR2004A
BC856BD
43
5
TR2007A
BC856BD
16
2
TR2016B
BC856BD
43
5
TR2016A
BC856BD
43
5
TR2019A
BC856BD
16
2
TR2019B
BC856BD
16
2
TR2004B
BC856BD
5
34
TR2020B
BC846BD
5
34
TR2022B
BC846BD
16
2
TR2007B
BC856BD
100V
C2009
1N0
AGND
-14V
AGND
0W125
R2099
220K
AGND
TR2017
KSC3503
TR2011
KSA1381
GND_C
P2009
P2007
0W25
R2005
68R
GND_C
P2119
P2120
P2117
0W25
R2117
68R
TR2009
BC846B
TR2008
BC856B
TR2015
BC846B
TR2013
BC856B
50V
C2021
10UF
50V
C2018
10UF
0W25
R2036
12K
0W25
R2088
12K
0W25
R2034
12K
0W25
R2090
12K
D2005
BAS21LT1
D2009
BAS21LT1
P2082
P2087 P2033
P2034
P2051
P2069
P2045
P2075
P2070
P2053
P2052
P2071
P2038
P2084
27V
DZ2001
GLZ
27V
DZ2002
GLZ
D2007 BAV199D2008 BAV199
100V
C2002
220UF
100V
C2039
220UF
0W1
0.10%
R2059
1K0
0W1
0.10%
R2089
1K0
50V
C2016
470P
50V
C2026
470P
D2001
NSR1020
D2014
NSR1020
0W25
R2046
68R
0W25
R2069
68R
NF
NF
NF
50V
C2010
22N
50V
C2029
22N
100V
C2019
150P
100V
C2028
150P
100V
C2017
33P
100V
C2027
33P
D2013
NSR1020
-55V
+55V
RED LED2001
0603
RED LED2000
0603
0W063
R2071
68R
0W063
R2072
68R
0W063
R2098
1K5
0W063
R2017
1K5
0W063
R2008
5K1
0W063
R2003
3M3
0W063
R2012
20K
0W063
R2066
15K
50V
C2015
100N
0W063
R2108
360R
50V
C2038
100N
0W063
R2100
4K7
50V
C2040
1N0
0W063
R2114
1K5
50V
C2031
100N
0W063
R2074
1K5
0W063
R2083
68R
0W063
R2084
68R
0W063
R2039
4K7
0W125
R2094
6K8
0W125
R2060
6K8
0W063
R2109
1K5
0W063
R2107
68R
0W063
R2112
1K0
0W063
R2116
47R
0W063
R2111
100R
100V
C2041
1uF
50V
C2034
1N0
AGND
0W063
R2070
0R0
0W063
R2057
0R0
0W063
R2058
0R0
0W063
R2026
1K0
0W063
R2032
68R
0W063
R2027
47R
0W125
R2097
10K
0W125
R2040
10K
0W063
R2031
100R
100V
C2006
1uF
AGND
50V
C2011
1N0
NF
NF
0W063
R2015
10R
0W063
R2105
10R
0W063
R2048
220R
NF
0W063
R2016
10R
0W063
R2106
10R
100V
C2036
220N
100V
C2004
220N
0W063
R2029
220R
0W063
R2093
220R
0W063
R2101
3K3
0W063
R2019
3K3
0W063
R2047
0R0
0W063
R2050
0R0
0W063
R2033
1K0
0W063
R2085
1K0
0W063
R2044
430R
0W063
R2076
430R
0W063
R2045
2K7
0W063
R2077
2K7
0W063
R2001
10K
0W063
R2000
4K7
0W063
R2038
330R
0W063
R2079
330R
0W25
R2067
2K7
0W25
R2080
2K7
0W063
R2025
1K5
0W063
R2095
20R
TH2001100R@ 25C
TH2000
47k@25C
TH2002
47k@25C
NF
NF
NF
NF
NFNF
NF
0W5
R2024
0R47
0W5
R2023
0R47
1W
R2006
47R
1W
R2102
47R
1W
R2037
1K5
1W
R2091
1K5
2W
R2075
3R3
AGND
Op Amp Decoupling
50V
C2043
100N
50V
C2044
100N
50V
C2046
100N
50V
C2047
100N
50V
C2042
10UF
50V
C2045
10UF
+14V
-14V
100V
C2003
22P
TR2006A
NJL3281DG
TR2006B
NJL3281DG
AGND
0W063
R2002
1K0
0W063
R2007
1K0
P2126
P2012
P2022
P2122
P2124 P2125
P2127
P2130
P2133
P2062 P2111
P2135
P2121
P2129
P2132
P2131
P2123
P2128
P2081
P2134
P2106
NLD
NLD
TR2026
MMBTA92L
0W125
R2118
47K
-55V
+55V
0W063
R2104
47R
D2011
BAS21HT1G
PLD
PLD
P2021
TR2025
MMBTA42L
+55V
0W125
R2103
47K
-55V
0W063
R2020
47R
D2002
BAS21HT1G
50V
C2023
22UF
2
3
1
84
IC2001A
LM4562MA
6
5
7
IC2001B
LM4562MA
0W125
Thin Film
R2013
15K
0W125
Thin Film
R2014
15K
0W063
R2021
270R
0W063
R2022
3K3
100V
C2022
22P
100V
C2025
22P
0W063
R2081
180R
0W063
R2049
10R
18_E048 PK 28/11/18 F.0Amplifier improvements
0W063
R2113
360R
19_E007 JH 11/02/2019 G.0Rx113 changed to 360R, Schottky error actually fixed
0W063
R2018
6K8
0W063
R2115
6K8
0W125
R2082
220K
0W125
Thin Film
R2010
10K
0W063
R2051
4R7
0W063
R2061
4R7
0W063
R2052
330R
0W063
R2062
330R
0W125
R2092
4R7
19_E027 PK 20/05/19 1.0Value changes protection and compensation
0W1
0.10%
R2009
30K
0W1
0.10%
R2056
3K0
0W1
0.10%
R2087
3K0
0W1 0.10%
R2042
2K0
0W1 0.10%
R2078
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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