Arp 4012 voltage controlled low pass filter submodules

Page 1

+15V

A
» , . +15v
R32 Filter HIgh-lmpedance
10K Ladder Buffer
Q16
2N5172 +15v R20 R21
n17 470R 470R
R33 AD3953
15 DUAL FET CR4 R21
: cm 015 G 020 "'9 15K OUTPUT
R1 H 11-111 11-111 1N6076 gar:
470R 7 II 7 a Level Shifter
0.01UF Amplifier 15
+15v Q13 (:19
A 012 j) l (E 013 11-531/fl7 11-531 45"
POSITIVE » R2 11-31 12-81 \g5
SUPPLY © 470R c3
__ as H o.o1UF
" 0.D1UF cs
R18 [I R19 5oPF
GROUND @T, 010 011 100K 100K H
11-111 M 11-81
R3 [I
= __ :29 470R '$'
__ , , C2
0.01UF 4H7 11.111UF 69 R27
NEGATIVE @ _ Sam 1%
SUPPLY . as 09 OFFSEr 5V
V R4 TZ-a1 11-111 TRIM C10
~15V 1K3 50PF 2
4H7 _L AUDIO
c1 '1' OUTPUT
_ (:7
R6 0.01UF A1 10
(MM 06 Q7 55 R26 R24 R25 LM3°1A
- 30m aoK1 Sam
1 A TEN/W 11-81 50 1% 1% 1% 45"
Signal Limiter __ Differential
Level Shifter ' ' Amplifier
-15v
INVERTING
INPUT Q1 +15v
12-31
+15v
NON-lNVEmglfi _ 02 CR1 A
7Z4 1Ns14
R3 R9 CR2 R13
1.2;; 3K32 3K32 ] fig mguum
1%
CR3
__ 1N914 NOTES:
F CONTROL $6076 11 ALL RESISTORS ARE oizsw 10% UNLESS OTHERWISE SPECIFIED
c INPUT @- R14 21 PAIRED TRANSISTORS ARE MATCHED AND THERMALLY COUPLED
R30 45, 100K 31 Q4 AND Q5 ARE SELECTED AND THERMALLY COUPLED
1K37 R31 R16 41 A1 IS SELECTED FOR LOW OFFSET (SL19986)
+3500PPMIK 410R 1K
SCALE @ 1W 3% .-. .-. ' [0 WE
TR' 04 as 4012 VOLTAGE CONTROLLED LOW-PASS FILTER
R15 R17 TZ-581 11.31 9:511:11 Ev assamau
120K 196K
1% , ARF INSTRUMENTS, INC.
FlNE TUNE Exponentlal . 197° TEE? 415 623
TRIM = -15v ~ . ,
converter US 113,444,362
40 1 2 DRAWN EV DATE REV
.1 VERGHESE 11-FEB«97 A