Philips Semiconductors
Dual tandem electronic
potentiometer circuit
Product specification
TDA1074A
APPLICATION INFORMATION
Treble and bass control circuit
VP = 20 V; Tamb = 25 °C; measured in Fig.3; RG = 60 Ω; RL > 4,7 kΩ; CL < 30 pF; f = 1 kHz; with a linear frequency
response (Vc1 = Vc2 = 0 V); unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Supply current (without load)
Frequency response (−1 dB)
Vc1 = Vc2 = 0 V
Voltage gain at linear frequency
response (Vc1 = Vc2 = 0 V)
Gain variation at f = 1 kHz
IP
f
Gv(1)
14
22
30
mA
10
−
20 000 Hz
−
0
−
dB
at maximum bass/treble boost or
cut at ±Vc1 = ±Vc2 = 120 mV
Bass boost at 40 Hz (ref. 1 kHz)
∆Gv(1)
−
±1
−
dB
Vc2 = 120 mV
Bass cut at 40 Hz (ref. 1 kHz)
−Vc2 = 120 mV
Treble boost at 16 kHz (ref. 1 kHz)
−
17,5
−
dB
−
17,5
−
dB
Vc1 = 120 mV
Treble cut at 16 kHz (ref. 1 kHz)
−
16
−
dB
−Vc1 = 120 mV
Total harmonic distortion
−
16
−
dB
at Vo(rms) = 300 mV
f = 1 kHz (measured selectively)
f = 20 Hz to 20 kHz
at Vo(rms) = 5 V
f = 1 kHz
f = 20 Hz to 20 kHz
Signal level at THD = 0,7%
(input and output)
Power bandwidth at reference
level Vo(rms) = 5 V (−3 dB);
THD = 0,1%
THD
THD
THD
THD
Vi; o(rms)
B
−
0,002 −
%
−
0,005 −
%
−
0,015 0,1
%
−
0,05
0,1
%
5,5
6,2
−
V
−
40
−
kHz
December 1982
5