National Semiconductor LM1036 Technical data
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LM1036
Dual DC Operated Tone/Volume/Balance Circuit
LM1036 Dual DC Operated Tone/Volume/Balance Circuit
January 1995
General Description
The LM1036 is a DC controlled tone (bass/treble), volume
and balance circuit for stereo applications in car radio, TV
and audio systems. An additional control input allows loudness compensation to be simply effected.
Four control inputs provide control of the bass, treble, balance and volume functions through application of DC voltages from a remote control system or, alternatively,fromfour
potentiometers which may be biased from a zener regulated
supply provided on the circuit.
Each tone response is defined by a single capacitor chosen
to give the desired characteristic.
Block and Connection Diagram
Dual-In-Line Package
Features
n Wide supply voltage range, 9V to 16V
n Large volume control range, 75 dB typical
n Tone control,
n Channel separation, 75 dB typical
n Low distortion, 0.06%typical for an input level of 0.3
Vrms
n High signal to noise, 80 dB typical for an input level of
0.3 Vrms
n Few external components required
±
15 dB typical
DS005142-1
Order Number LM1036N
See NS Package Number N20A
© 1999 National Semiconductor Corporation DS005142 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage 16V
Control Pin Voltage (Pins 4, 7, 9, 12, 14) V
Storage Temperature Range −65˚C to +150˚C
Power Dissipation 1W
Lead Temp. (Soldering, 10 seconds) 260˚C
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage
to the device may occur. Operating Ratings indicate conditions for which the
device is functional, but do not guarantee specific performance limits.
CC
Operating Temperature Range 0˚C to +70˚C
Electrical Characteristics
=
V
CC
Supply Voltage Range Pin 11 9 16 V
Supply Current 35 45 mA
Zener Regulated Output Pin 17
Voltage 5.4 V
Current 5mA
Maximum Output Voltage Pins 8, 13; f=1 kHz
Maximum Input Voltage Pins 2, 19; f=1 kHz, V
Input Resistance Pins 2, 19; f=1 kHz 20 30 kΩ
Output Resistance Pins 8, 13; f=1 kHz 20 Ω
Maximum Gain V(Pin 12)=V(Pin 17); f=1 kHz −2 0 2 dB
Volume Control Range f=1 kHz 70 75 dB
Gain Tracking f=1 kHz
Channel 1–Channel 2 0 dB through −40 dB 1 3 dB
Balance Control Range Pins 8, 13; f=1 kHz 1 dB
Bass Control Range f=40 Hz, C
(Note 3) V(Pin 14)=V(Pin 17) 12 15 18 dB
Treble Control Range f=16 kHz, C
(Note 3) V(Pin 4)=V(Pin 17) 12 15 18 dB
Total Harmonic Distortion f=1 kHz, V
Channel Separation f=1 kHz, Maximum Gain 60 75 dB
Signal/Noise Ratio Unweighted 100 Hz–20 kHz 80 dB
Output Noise Voltage at CCIR/ARM (Note 4) 10 16 µV
Minimum Gain
Supply Ripple Rejection 200 mVrms, 1 kHz Ripple 35 50 dB
Control Input Currents Pins 4, 7, 9, 12, 14 (V=0V) −0.6 −2.5 µA
Frequency Response −1 dB (Flat Response 250 kHz
Note 2: The maximum permissible input level is dependent on tone and volume settings. See Application Notes.
=
12V, T
25˚C (unless otherwise stated)
A
Parameter Conditions Min Typ Max Units
=
V
9V, Maximum Gain 0.8 Vrms
CC
=
V
12V 0.8 1.0 Vrms
CC
2V 1.3 1.6 Vrms
CC
Gain=−10 dB
−40 dB through −60 dB 2 dB
−26 −20 dB
=
0.39 µF
b
V(Pin 14)=0V −12 −15 −18 dB
,=0.01 µF
t
V(Pin 4)=0V −12 −15 −18 dB
=
0.3 Vrms
IN
Gain=0 dB 0.06 0.3
Gain=−30 dB 0.03
Maximum Gain, 0 dB=0.3 Vrms
CCIR/ARM (Note 4)
Gain=0 dB, V
Gain=−20 dB, V
=
0.3 Vrms 75 79 dB
IN
=
1.0 Vrms 72 dB
IN
20 Hz–16 kHz)
%
%
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Electrical Characteristics (Continued)
Note 3: The tone control range is defined by capacitors Cband Ct. See Application Notes.
Note 4: Gaussian noise, measured over a period of 50 ms per channel, with a CCIR filter referenced to 2 kHz and an average-responding meter.
Typical Performance Characteristics
Volume Control
Characteristics
Tone Characteristic (Gain
vs Frequency)
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DS005142-23
Balance Control
Characteristic
Tone Characteristic (Gain
vs Frequency)
DS005142-21
DS005142-24
Tone Control Characteristic
DS005142-22
Loudness Compensated
Volume Characteristic
DS005142-25
Input Signal Handling vs
Supply Voltage
DS005142-26
THD vs Gain
DS005142-27
Channel Separation vs
Frequency
DS005142-28
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