LM4610 Datasheet, PDF (1/11 Pages) National Semiconductor (TI) – Dual DC Operated Tone/Volume/Balance Circuit with National 3-D Sound

May 1999
LM4610
Dual DC Operated Tone/Volume/Balance Circuit with
National 3-D Sound
General Description
The LM4610 is a DC controlled tone (bass/treble), volume
and balance circuit for stereo applications in car radio, TV
and audio systems. It also features National’s 3D-Sound Cir-
cuitry which can be externally adjusted via a simple RC Net-
work. An additional control input allows loudness compensa-
tion to be simply effected.
Four control inputs provide control of the bass, treble, bal-
ance and volume functions through application of DC volt-
ages 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
n National 3-D Sound
n Wide supply voltage range, 9V to 16V
n Large volume control range, 75 dB typical
n Tone control, ±15 dB typical
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
Block and Connection Diagram
Dual-In-Line Package
Order Number LM4610N
See NS Package Number N24A
DS101125-1
© 1999 National Semiconductor Corporation DS101125
www.national.com