TEA6330T.PDF

INTEGRATED CIRCUITS

DATA SHEET

TEA6330T

Sound fader control circuit

for car radios

Preliminary speciﬁcation

Supersedes data of June 1991

File under Integrated Circuits, IC01

January 1992

Philips Semiconductors

Preliminary speciﬁcation

Sound fader control circuit

for car radios

TEA6330T

FEATURES

Stereo/hi-fi processor for car radios performed with

volume, balance, bass and treble controls

Sound fader control (front/rear) down to

30 dB in steps

of 2 dB

Fast muting via bus or via setting the muting pin

Suitable for external audio equalizers, can be looped-in

controlled by the I 2 C-bus

GENERAL DESCRIPTION

This bipolar IC is an I 2 C-bus controlled sound/volume

controller for car radios, in addition with fader function and

the possibility of an external equalizer.

Power-on reset on chip sets the device into general

mute position

AC and DC short-circuit protected concerning

neighbouring pins

I 2 C-bus control for all functions.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

V P

supply voltage

8.5

I P

supply current

V i

maximum AF input signal

(RMS value)

V o

maximum AF output signal

(RMS value)

1.1

G v

volume control range, separated

fader control range, separated

- 30

bass control range

treble control range

THD

total harmonic distortion

0.2

S/N(W)

weighted signal-to-noise ratio

a CR

crosstalk attenuation

frequency response (

1 dB)

35 to

20000

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TEA6330T (1)

plastic

SOT163A

Note

1. Plastic small outline package; 20 leads; body width 7.5 mm; (SOT163A); SOT163-1; 1996 August 02.

January 1992

Philips Semiconductors

Preliminary speciﬁcation

Sound fader control circuit

for car radios

TEA6330T

Fig.1 Block and test circuit.

Fig.2 Connection of equalizer (Table 7).

In application with equalizer circuit

TEA6360 coupling capacitors are not

necessary. Connectors for RIGHT in

brackets.

Fig.3 T-filter for enhanced bass control (Fig.5).

Connectors for LEFT in brackets.

January 1992

Philips Semiconductors

Preliminary speciﬁcation

Sound fader control circuit

for car radios

TEA6330T

PINNING

SYMBOL PIN

DESCRIPTION

C PS

ﬁltering capacitor for power supply

IN-R

audio input signal RIGHT

GND1

analog ground (0 V)

C BR1

capacitor for bass control RIGHT

and signal to equalizer

C BR2

capacitor for bass control RIGHT

C TR

capacitor for treble control RIGHT,

input signal for equalizer RIGHT

QRR

right audio output signal of rear

channel

QRF

right audio output signal of front

channel

MUTE

input to set mute externally

GND2

digital ground (0 V) for bus control

SCL

clock signal of I 2 C-bus

SDA

data signal of I 2 C-bus

QLF

left audio output signal of front

channel

QLR

left audio output signal of rear

channel

C TL

capacitor for treble control LEFT,

input signal for equalizer LEFT

C BL2

capacitor for bass control LEFT

C BL1

capacitor for bass control LEFT

and signal to equalizer

V P

8.5 V supply voltage

IN-L

audio input signal LEFT

Fig.4 Pin configuration.

V ref

reference voltage output (V P /2)

January 1992

Philips Semiconductors

Preliminary speciﬁcation

Sound fader control circuit

for car radios

TEA6330T

FUNCTIONAL DESCRIPTION

This bipolar IC is an I 2 C-bus controlled sound/volume

controller for car radios including fader function and the

possibility of an external equalizer. The sound signal

setting is performed by resistor chains in combination with

multi-input operational amplifiers. The advantages of this

principle are the combination of low noise, low distortion

and a high dynamic range. The separated volume controls

of the left and the right channel make the balance control

possible. The value and the characteristic of the balance is

controlled via the I 2 C-bus.

Low level control fader is included independent of the

volume controls, because the TEA6330T has four driver

outputs (for front and rear).

An extra mute position for the front, the rear or for all

channels is built in. The last function may be used for

muting during preset selection. No external interface is

required between the microcomputer and this circuit, for all

switching and controlling functions are controllable via the

two-wire I 2 C-bus.

The separate mute-pin allows to switch the fader into mute

position without using the I 2 C-bus.

The contour function is performed by setting an extra bass

control and optional treble, depending on the actual

volume position. Its switching points and its range are also

controllable via the I 2 C-bus.

The on chip power-on reset sets the TEA6330T into the

general mute mode.

An interface is assigned behind the volume control to

loop-in an equalizer (Fig.2). In this case the treble control

is switched off, and the bass control can be used to set the

contour.

LIMITING VALUES

In accordance with the Absolute Maximum System (IEC 134). Ground pins 3 and 10 connected together.

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

V P

supply voltage (pin 18)

P tot

total power dissipation

700

T stg

storage temperature range

150

T amb

operating ambient temperature range

V ESD

electrostatic handling* for all pins

300

electrostatic handling** for all pins

± 4000

* Equivalent to discharging a 200 pF capacitor through a 0

series resistor.

** Equivalent to discharging a 100 pF capacitor through a 1.5 k

series resistor.

January 1992

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