Dual DC Operated Tone/Volume/Balance Circuit

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 loud-ness 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, from four 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.

Features
■ Wide supply voltage range, 9V to 16V
■ Large volume control range, 75 dB typical
■ Tone control, ±15 dB typical
■ Channel separation, 75 dB typical
■ Low distortion, 0.06% typical for an input level of 0.3 Vrms
■ High signal to noise, 80 dB typical for an input level of 0.3 Vrms
■ Few external components required