TL071C,AC TL072C,AC TL074C,AC
Representative Schematic Diagram
Bias Circuitry
Common to All
Amplifiers
(Each Amplifier)
Output
V
CC
Q2
Q6
Q4
Q5
Q1
Q3
J1
J2
–
Inputs
+
2.0 k
Q17
Q20
Q22
J3
Q23
Q24
Q15
Q19
10 pF
24
Q14
Q21
Q13
Q16
Q12
Q9
Q10
Q25
Q8
Q11
Q7
Q18
1.5 k
Offset
Null
(TL071
only)
1.5 k
V
EE
Figure 14. Audio Tone Control Amplifier
10 k
10 k
100 k
Input
0.033
µF
0.033
10 k
µF
V
CC
–
TL071
Output
+
3.3 k
68 k
V
EE
Turn–Over Frequency = 1.0 kHz
Bass Boost/Cut — 20 dB at 20 Hz
Treble Boost/Cut — 19 dB at 20 kHz
0.033
µF
0.033 µF
±
±
100 k
Figure 15. High Q Notch Filter
–
TL071
+
R
R
Input
C1
1
RC
2R1
C1
2
R1
f
350 Hz
1.5 M
300 pF
o
2
R
C
C
C
6
MOTOROLA ANALOG IC DEVICE DATA
ONSEMI [ ONSEMI ]
