arp 4012 lpf
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lpfTRANSCRIPT
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+ 1 5 V
A R P I N S T R U M E N T S , I N C .
4 0 1 2 V O L T A G E C O N T R O L L E D L O W - P A S S F I L T E RT I T L E
D E S I G N B Y
D R A W N B YJ V E R G H E S E
A S S E M B L Y
D A T E R E V1 1 - F E B - 9 7 A
N O T E S :
1 . A L L R E S I S T O R S A R E 0 . 2 5 W 1 0 % U N L E S S O T H E R W I S E S P E C I F I E D2 . P A I R E D T R A N S I S T O R S A R E M A T C H E D A N D T H E R M A L L Y C O U P L E D3 . Q 4 A N D Q 5 A R E S E L E C T E D A N D T H E R M A L L Y C O U P L E D
P A T E N T S
P O S I T I V ES U P P L Y
G R O U N D
4 0 1 2
1 9 7 0
R 14 7 0 R
6
N E G A T I V ES U P P L Y
- 1 5 V
C 40 . 0 1 U F
R 24 7 0 R
C 30 . 0 1 U F
R 1 81 0 0 K
C 20 . 0 1 U F
R 41 K 8
C 10 . 0 1 U F
Q 2T Z - 8 1
Q 1T Z - 8 1
- 1 5 V
R 63 K 3 21 %
R 93 K 3 21 %
R 1 12 2 0 R
R 83 K 3 21 %
R 1 22 K 2
R 1 05 6 K
R 58 2 0 R
1
14
2
18
+ 1 5 V
+ 1 5 V
S
DG
R 3 21 0 K
36
7
4
- 1 5 V
8
1
R 2 53 0 K 11 %
7
8
C 80 . 0 1 U F
C 90 . 0 1 U F
5
N O N - I N V E R T I N GI N P U T
I N V E R T I N GI N P U T
F i l t e rL a d d e r
H i g h - I m p e d a n c eB u f f e r
L e v e l S h i f t e rA m p l i f i e r
R 34 7 0 R
S i g n a l L i m i t e rL e v e l S h i f t e r
U S # 3 , 4 7 5 , 6 2 3U S # 3 , 4 4 4 , 3 6 2
Q 1 62 N 5 1 7 2
R 3 31 5 K
C R 11 N 9 1 4
C R 21 N 9 1 4
C R 31 N 9 1 4
R 1 41 0 0 K
+ 1 5 V
R 1 32 3 K 21 %
Q 32 N 6 0 7 6
- 1 5 V
R 1 71 9 6 K1 %
11S C A L ET R I M
3F c C O N T R O LI N P U T
R 3 01 K 8 7
+ 3 5 0 0 P P M / K1 W 3 %
9F I N E T U N ET R I M
R 3 14 7 0 R
R 1 61 K
+ 1 5 V
R 1 52 2 0 K
E x p o n e n t i a lC o n v e r t e r
D
S
G
R 2 04 7 0 R
C R 41 N 9 1 4
R 2 14 7 0 R
+ 1 5 V
O U T P U TG A I NT R I M
10
R 2 21 5 K
- 1 5 V
R 2 31 5 K
2
O F F S E TT R I M
Q 1 7A D 3 9 5 8D U A L F E T
R 73 K 3 21 %
R 2 43 0 K 11 %
R 2 63 0 K 11 %
C 55 0 P F
R 1 91 0 0 K
Q 4T Z - 5 8 1
Q 5T Z - 8 1
Q 6T Z - 8 1
Q 8T Z - 8 1
Q 1 0T Z - 8 1
Q 1 2T Z - 8 1
Q 1 4T Z - 8 1
Q 7T Z - 8 1
Q 9T Z - 8 1
Q 1 1T Z - 8 1
Q 1 3T Z - 8 1
Q 1 5T Z - 8 1
Q 1 8T Z - 5 8 1
Q 1 9T Z - 5 8 1
Q 2 02 N 6 0 7 6
D i f f e r e n t i a lA m p l i f i e r
C 71 0 P F
C 1 05 0 P F
A 1L M 3 0 1 A
R 2 73 0 K 1 1 %
+ 1 5 V
- 1 5 V
C 65 0 P F
A U D I OO U T P U T
4 . A 1 I S S E L E C T E D F O R L O W O F F S E T ( S L 1 9 9 8 6 )
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